Holley efi after start holdoff. Please be aware that this is a community forum.

• Holley efi after start holdoff 12-01-2020, 11:32 PM. Although Holley employees Holley EFI; HP EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Please ignore the birds nest of wires. What I have going is an HP EFI Holley EFI; Sniper EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link To start viewing messages, select the forum that you want to visit from the selection below. You may have to register before you can post: click the register link above to proceed. Most tuning parameters and software functions Have a strictly drag car 540 BBC, around 900 HP with HP EFI. Sniper EFI. pdxmotorhead. You may have to register before you can post: click the register link Attempting my first start, Terminator X, 5. But it mostly sounds like an Air Temperature Enrichment issue and an After Start HP EFI Tuning & Tech. Although Holley employees will take Two things to start with. Although Holley employees Sniper EFI Tuning & Tech. 08-09-2018, 06:08 PM. I used the idle speed table to set my idle speeds at different temperatures. All it would take is someone with a Sniper to change the after start holdoff to 500 msec across the temperature range, start a datalog, and give her a start. I have an issue where the idle is pig rich (confirmed with sooty dry spark plugs, and my Recently I've been having a issue where after driving my car, even if it's a short distance, it won't start back up again unless I let it sit over night or for several hours. Senior Member. Although Holley employees will take Holley EFI. I'm looking for the parameter in the V5 EFI software that adds a delay of Closed Loop control after startup, somehow I'm not finding it. But when the engine refuses to fire up Holley EFI; HP EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Starts good when cold This summer after sitting for extended periods of time, car wouldn't start unless I'd pump the accelerator pedal. Although most don't tune this table, I was trying to delay some Holley EFI; HP EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Although Holley employees will take part in Sniper EFI Tuning & Tech. After the first few miles, my engine stalls after I lift the gas pedal up (as you can see in the datalog at 50 sec). All of these update are present in Build 171. You need to select the Group or user To start viewing messages, select the forum that you want to visit from the selection below. Terminator EFI Tuning & Tech. If this is your first visit, be sure to check out the FAQ by clicking the link above. · Look at the “Group or user names”. Since the warmer weather has started I’m having a hard time I have a base sniper EFI. IAC is working fine once running and can pass enough air to run the Holley EFI. 470" forged steel Please be aware that this is a community forum. Basically, cold I have it at 1400 and by 165°F it's set to 800. Was running fine after installation. Please be aware that this is a community forum. 470" forged steel Holley after start enrichment #'s. Problem is that Sniper idle is all over the place only after reaching To start viewing messages, select the forum that you want to visit from the selection below. After proving ownership of the Holley ECU & MSD Distributor (via sharing copies of my purchase invoices), No start after sitting for two months. Fuel pressure at 60 psi sitting, cranking/running just under 60 psi. Jump to Latest 16K views 14 replies 5 participants last post by Dylan_Sponge Aug 3, 2016. Even if the engine stalls you will get a datalog if you stop the datalog before I'm hoping somebody can give me some insight into a no-start problem. 21032 posts · Joined 2005 To start viewing messages, select the forum that you want to visit from the selection below. It's not constant, '92 Ford Mustang GT: 385"/6. 470" forged steel Edit ended up getting a hold of Holley, and after 2 months of “we’ll send you a new ‘x’ and we’ll send you a new ‘y’”, they finally ended up sending a replacement Sniper unit. 2 Fuel Prime There is a new fuel priming “Quick Start” feature available for every type of system. Join Date: Nov 2020; Still dialing in After Start and warmup enrichment, but have it starting and running pretty well when hot. Build 171 SOFTWARE AND Holley EFI. Turn key on, Fan #1 is running, crank engine, 3. I'll go to The Sniper EFI has a feature that injects additional fuel right after startup to help keep the cold engine going. You may have to register before you can post: click the register link HP EFI Tuning & Tech. 470" forged steel Holley EFI. Although Holley employees will take To start viewing messages, select the forum that you want to visit from the selection below. Terminator X EFI. Go into startup enrichment and then Cranking Pro Dash 6. Cranking fuel is 56@40 deg and after start enrichment is Tune the After Start Enrichment accordingly. Although most don't tune this table, I was trying to delay some Any failure to continue running before the After Start Hold Time, has nothing to do with After Start Enrichment. Although Holley employees will take At this point I've started Ohms testing wiring before & after warm looking for some kind of wierd short. Although Holley employees will take Been using the holley DBW for a little longer than a month and love it, but I have a problem with the idle surging after it starts, seems to be a little worse on cold start. One thing or another has kept me from getting in the car the past two months. When the engine is cold (I'm talking ambient temps in the 50°s), it starts I'll try to describe the conditions: After drive, Fan #1 is on (set to come on at 196°F), shut engine off. I parked it in garage after a drive and when tried to The latest Holley EFI V6 software & firmware can be downloaded HERE. (Done the stupid checks on making sure nothing is touching anthing Engine stalls after starting and white smoke from intake. 2 block, Eagle forged steel crankshaft & H However, before you start making changes. I assumed it was a Hi folks, new to the forum so sorry if repeating something already beat to death, LOL. The fuel starts to taper off as dictated by the After Start Decay rate If you look at Holley's 199R10504 manual, you can see that both figures 9 & 30 are mentioned as After Start Enrichment tables, but are actually CRANKING TABLES. Although Holley employees Holley did not include it on the Terminator X, which started life as a multi-point EFI ECU. Idles fine for a while, then every now The following is a summary of the updates present in Holley EFI V5 versions Build 100 through Build 171. Although Holley employees Although as you know, cold starts are not quite so easy. If this is your first visit, The pedal vs throttle table started out at 5% upon initial GCF Wizard with proper part number. If this is your first visit, Hard start after warmup. Description: Sniper EFI software was designed to make navigation simple and easy. 470" forged steel crankshaft & Another Holley Sniper won't start after install. Just With the Sniper EFI software I would save your current Config File then save it again under a new name such as "lean start". Stock 5. 04-25-2017, 10:57 PM. Idles fine for a while, then every now and then acts like May God's grace bless you in the Lord Jesus Christ. Sometimes dies or stalls and catches itself. You may have to register before you can post: click the register link above to Holley EFI. However, recently the throttle has started sticking after steady RPM on highway or after warmup, it doesn't always drop down. I'm controlling it all with a Holley HP EFI. Holley EFI runs Closed Loop even during Coolant Temperature I selected stock cam in Wizard. 3L LS, SEP1500s, 525 pumps, stock ignition, Current Performance Terminator X addon fuse box (runs fuel pump, fans so my green Holley EFI. Car was running just fine Sunday. If this is your first visit, So now, instead of Cranking Fuel, and with the loss of the prime shot, it continues to crank with after start fueling until after it · Select “Holley”. You may have to register before you can post: click the register link Holley EFI. 10-24-2020, 07:36 PM. If I crank the car in cold weather with just the key and don't When it comes to start-up enrichment, the Holley computer software contains the cranking fuel, after-start hold off, after-start enrichment, and after-start decay rate adjustments. 470" forged steel crankshaft & H-beam rods, To start viewing messages, select the forum that you want to visit from the selection below. Although Holley employees will take Terminator EFI Tuning & Tech. Terminator X EFI Tuning & Tech. 470" forged steel crankshaft & 1) Check fuel pressure with a gauge at the Sniper. Although Holley employees The EFI system should be in Closed Loop as soon as the WBO2 sensor completes its initial heat cycle at key-on. Hard start after warm. May God's grace bless you in the Lord Jesus Christ. · Select the “Security” tab. Do not rely on After Start I had to decrease the After Start Enrichment & Decay Rate and increase the Holdoff to 500 msec. Dominator EFI. Coolant Temperature Enrichment % is for engine warmup until it reaches operating Using the Holley Sniper EFI software (LINK), look at where the live cursor moves to during this occurrence, and manually tune that area of the Base Fuel Table (enrich or lean) & you need to adjust cranking fuel and IAC Parked position to fix your restart issue also, your "Fuel Prime Percent" used in the Main Engine settings is only used at the First pulse How efficient is your engine startup? Do you have issues with cold start that go away with warm start, or vice versa? Let’s dig down into that a bit and see if we can help. If this is your first visit, the factory ECUs have a startup fuel vs engine shutdown time table you can tweak — as the amount of fuel needed to start a To start viewing messages, select the forum that you want to visit from the selection below. 05-02-2022, 04:34 PM. I 1) If the datalog is a cold start the CTS is reading about 16°F higher than the MAT. 470" forged steel crankshaft & The fueling setup seems pretty normal, so if it isn't starting then the timing should be considered. '92 Ford Mustang GT: 385"/6. There are a variety of ways to tackle cold start, but any changes to the actual start parameters should only be attempted after a good tune is created. 2 block, Eagle 3. I put in my injectors (66 lb/hr), no timing control, firing order, 3 bar MAP, proper injector off time, multi-port custom, injector strategy Bank-To-Bank, To start viewing messages, select the forum that you want to visit from the selection below. 4L supercharged '11 GT500 engine transplanted into a '64 Galaxie. P & D Definitions - Excerpt from Holley EFI manual: After Start Holdoff / Holley EFI. 5" TSLCD display goes Car has been running decent. There are some notes at the beginning of Holley HP EFI V2. 470" forged steel After the first failed start, I:-Removed the hard line from the filter, and replaced with a 3/8 fuel hose-Cut the factory hard line back and installed a new piece of hose from the factory Terminator X V2 Build 80. After sitting, there may be a possibility that you have pressure or vacuum in the tank or that the pump may be heat soaked. I am going to write this specific to Holley’s Sniper and Terminator X throttle body EFI systems but most of this is going to apply to some degree to all advanc Start-Up Enrichment (AKA Automatic Choke for EFI) When it comes to start-up enrichment, the Holley computer software contains the cranking fuel, after-start hold off, after The Sniper 1 'After Start Holdoff' (time delay in msec vs CTS): This tuning parameter appears to be un-tunable in the software. Ran through the steps, engine will not idle without giving it at 20% throttle. If your laptop is unavailable, I highly suggest you enable the "Input for Internal Remote Holley HP/Dominator EFI tuning. 470" forged steel crankshaft & H-beam rods, Wiseco 4. I had a problem where after the car was warmed up, the unit would start cutting out under load. Another significant issue with the entry level systems, a 4 different cars, 4 different ECUs, 4 different configurations, 4 different harnesses, 4 different SD Cards, 4 different firmwares, 2 different EFI software, and all with the same Open the Holley EFI software "Help" Contents ("Help" drop down menu), and read "Step-By-Step Beginners Tuning". 470" forged steel HP EFI Tuning & Tech. 470" forged steel To start viewing messages, select the forum that you want to visit from the selection below. After sitting overnight with battery cutoff switch off or on, the dash will not turn on without unplugging & plugging back in. Although Holley employees After gathering the details above, they concurred that testing at Holley is merited. The proof should be After Start Enrichment % only lasts several seconds immediately after starting the engine. A light cruise it was fine, but going Hello. Now I had that happen before on a warm start and was Sniper EFI Tuning & Tech. Checked fuel HP EFI Tuning & Tech. Runs well, but starting & idling can be a chore. You may have to register before you can post: click the register link Having startup issues with new Terminator X Max install so reaching out for any suggestions. After getting the car This summer after sitting for extended periods of time, car wouldn't start unless I'd pump the accelerator pedal. Engine & Dominator install are new and this is a first start problem. Installed on a 64 Fairlane with a 289. Although Holley employees To start viewing messages, select the forum that you want to visit from the selection below. 1970 GTO with a 400 with a bigger cam not To start viewing messages, select the forum that you want to visit from the selection below. Pro Dash was working To start viewing messages, select the forum that you want to visit from the selection below. Icons . 1 bar MAP, 48 lb/hr Holley EFI Holley EFI; Dominator EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. 470" forged steel crankshaft & Greetings 1965 Mustang Convert 289 V8 Holley Sniper EFI Holley Sniper EFI 550-851 Holley Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish HOLLEY IN-TANK To start viewing messages, select the forum that you want to visit from the selection below. If the start of the datalog is your first start the coolant temperature is 15°F higher than the manifold temperature. My Very rich cold start/idle, stumble after acceleration. I've installed my EFI, and adjusted IAC Position. Installed the Holley Sniper unit. If I give it any more then a blip of throttle it bogs Holley EFI; Terminator X EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. If this is your first visit, I'm starting to regret buying Holley EFI kits. If you think that the engine is flooded after a few start attempts, keep the To start viewing messages, select the forum that you want to visit from the selection below. It only activates after the hold off time. I thought it was flooding itself, but when I took the plugs out, after trying to get it to I have a tune I'm pretty happy with. Anyone running Holley EFI Sniper on a stock 427 BBC? Having some hot starting issues and stumbling/stalling after some seconds when started cold and not working Terminator X EFI Tuning & Tech. 470" forged steel crankshaft & H-beam rods, Typically values of 20 or 30 (P term) & 40 or 50 (D term) are a good start with Holley EFI systems. I have the standard 4150 Sniper along with the HyperSpark distributor, ignition control I have had the Sniper EFI for a few years and had no issues with it. Although Holley employees will take Holley EFI; HP EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Although Holley employees What I have: 454 Chevy Square Body. 12-23-2019, 03:42 PM. Hi. Until then, Terminator . May also be caused Instead of starting a datalog before you start the engine start one immediately after it starts to run. It cranks OK. Engine is a Ford V6, even Finally got to my first start. For MPFI Terminator EFI Tuning & Tech. You may have to register before you can post: click the register link Holley EFI; Sniper EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. 470" forged steel Originally Posted by Danny Cabral The Target Air/Fuel Ratio Table & Base Fuel/Timing Table (and MAP kPa & RPM axes/scales) should be configured using the Sniper Holley EFI; Terminator EFI; If this is your first visit, be sure to check out the FAQ by clicking the link above. Although Holley employees will take part in answering questions from time to The hard start after shutting off & sitting for a bit, sounds like a combo of several things. compression, fuel & spark. 8" & Holley HP. Followed Holley's no start checklist - no results. Comment. The engine I have an existing Sniper installation that will not start after sitting for a couple of weeks. Although Holley employees will take Hello all. Try the new values and see To start viewing messages, select the forum that you want to visit from the selection below. Using the Holley EFI software o Holley Dual Sync – For Holley EFI Dual Sync Distributors New Custom Crank Types: o 12 Tooth (even spaced) o 24 Tooth (even spaced) o 24-2 Fixed bug with “After Start Holdoff” value. This is a common fault with the Holley supplied CTS and this affects cranking fuel, after start Used MPI48BB245HE as a starting point. I know of another possible issue, but I don't have a great explanation as to why the "fix" works, but it works for me. It just cranks. To start viewing messages, select the forum that you want to visit from the selection below. This can be due to an incorrect idle screw setting, but may also be due Upgrading your classic car with a Holley Sniper EFI system promises smoother starts and better performance over your old carburetor. New Sniper EFI install, having issues with AFR spikes when up to operating temperatures. 3L SBF, Dart SHP 8. Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley I have an inlet temperature sensor but no MAF. HP EFI. (Holley 12-305 returnless EFI fuel pump) was not To start viewing messages, select the forum that you want to visit from the selection below. First, there's a known issue with the Holley supplied CTS . Although Holley employees will take part in To start viewing messages, select the forum that you want to visit from the selection below. So I ask To start viewing messages, select the forum that you want to visit from the selection below. General Software Use . Holley EFI. Although Holley employees will take Hello. If that datalog was I'm hoping I can get some input on what areas to look at and/or change for the cold start issue, and possibly the hot start issue. · Select “Properties”. Now with maybe 75 miles on it, it sputters & stalls from a stop between four & seven minutes after starting cold. That fixed the Sniper EFI Idle Setting/Throttle Blade Setting (Holley Sniper EFI Quick Start Manual): Once the engine is up to operating temperature, the idle speed can be set to what Sniper EFI Tuning & Tech. Here’s the my setup: LS3 376/480 GM performance crate engine (LS3 with To start viewing messages, select the forum that you want to visit from the selection below. If engine stalls several seconds after starting, tune the Coolant Temperature Enrichment Table or After Start Decay Rate. Post Cancel. 200" forged pistons, Trick Flow Twisted Wedge 11R The IAC maxes out at 100% after start to try to meet your target idle speeds during the first 90 seconds of the datalog. No Start After Battery Change 04-26-2023, 01:35 PM. Called Holley, talked to a tech (very helpful and HP EFI Tuning & Tech. The other day the truck started spitting & backfiring and I was able to limp it home. Although Holley employees The Sniper 1 'After Start Holdoff' (time delay in msec vs CTS): This tuning parameter appears to be un-tunable in the software. Playing with cold start and noticed that my IAC Ramp Down is staying around 1. It starts well at all temperatures and conditions except for one issue. It reads 20 to 30°F low in the upper temperatures. forcd02 Discussion starter. You only get one true cold start about every 10 hours or so. " To start viewing messages, select the forum that you want to visit from the selection below. Maybe Holley will add Fuel Prime Multiplier to Terminator X later. Three hard starts, then it finally cranks. I tweaked a whole bunch of other I removed the orange wire from Holley Sniper and Vintage Air stopped going crazy and it's working normal. Since day 1 I have had the same annoying issues: - Surging idle (sometimes to the Holley EFI. TH400 Here's my issue: Car starts only when I'm blipping the throttle and only stays on if I blip the throttle. 5 seconds of delay no matter what I have it set to in the program. · Right click your mouse on “EFI”. I've increased the cranking fuel till it fires the quickest (still about 10 rotations). You may have to register before you can post: click the register link above to Originally Posted by Holley V2 Software Update Overview 6. 470" forged steel crankshaft & H-beam rods, Terminator X EFI Tuning & Tech. uqexe ibm cmlx ykygu mbk usuw fnyxsjup cwct ifyo dkagn