02-15-2021, 04:18 PM | #90 |
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How does it start in the cold with ethanol? I know my STI, EVO, and FRS struggled to start anytime the temperature outside was cold.
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02-15-2021, 04:52 PM | #91 | |
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We moved to a larger house (vs townhomes with connected garages) so I turned cold start back on a couple weeks ago and no more issues. There’s enough fuel request from the higher cold start RPMs that the car fires up no problem even with E50 at <30F. Bonus is my start ups are less smelly now that my 300-cell HJS heats up much more quickly. |
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02-15-2021, 05:24 PM | #92 | |
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ZM22839.50 |
02-15-2021, 06:53 PM | #93 |
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ZM2.. Well the e85 is not the issue. This stuttering thing only happens on full throttle on stage2 plus map.. all others are fine..
Thinking it might be a map issue. When I ease into full throttle on this map it's seems ok. when trying to do a 3rd or 4th gear quick full throttle data log is when the stuttering starts.. This is driving me nuts |
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02-15-2021, 06:57 PM | #94 | |
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Speedtech Stage 3 (8474) | Remus Exhaust | Wagner EVO 3 | XClutch | DS2 + Lift Kit | Nostrum S2 Injectors | TI E5LM | Torqbyte EKP | Intrax 1K2 | SPL | Drexler GT Race Light LSD by limitedslip.de | Schirmer Diff Lift Kit
Full E85 DI-Only 717WHP Flex Fuel tuned by BendCalibration (ECUTek) | Built by SD Garage |
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02-15-2021, 07:03 PM | #95 |
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DSC is off
I'll try and get a log tomorrow. Since I have ease into full throttle, it may not be the best I'll get a log of regular stage2 e30 as well. Thanks alot |
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02-15-2021, 07:13 PM | #96 | |
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Plenty of guys running the map without issue, so maybe we’ll uncover a certain plug or coil problem, HPFP issue, etc. Many smart guys here with good eyes that can take a look. Did you make any other changes to the car when you installed the HPFP, or any other recent changes? |
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02-15-2021, 11:38 PM | #97 | ||
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'14 435i RWD - BM3 stage 2+ E30/bolt ons/stock turbo/full drag pack -- [10.9@125].....60 to 130 - 8.5
'16 340i RWD - BM3 stage 2+ E50/bolt ons/stock turbo/full drag pack -- [10.2@131]......60 to 130 - 7.5 |
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ZM22839.50 |
02-16-2021, 01:25 PM | #99 |
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Do you recall what the gap was before?
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Speedtech Stage 3 (8474) | Remus Exhaust | Wagner EVO 3 | XClutch | DS2 + Lift Kit | Nostrum S2 Injectors | TI E5LM | Torqbyte EKP | Intrax 1K2 | SPL | Drexler GT Race Light LSD by limitedslip.de | Schirmer Diff Lift Kit
Full E85 DI-Only 717WHP Flex Fuel tuned by BendCalibration (ECUTek) | Built by SD Garage |
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02-16-2021, 01:41 PM | #100 | |
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I was close to that gap and had issues, went back up to 0.026 and issues went away. |
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02-16-2021, 02:00 PM | #101 |
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Dang it... too late. But that was exactly the problem! Thanks ZM2 for all your help.
Absolutely Zero stuttering. Just hard to believe just a simple plug change made all difference |
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02-16-2021, 02:15 PM | #102 | |
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If it reappears as you start pushing the car harder, think about opening the gap back up, and maybe even put some fresh coils on for the heck of it. |
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02-16-2021, 02:38 PM | #104 | |
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Buy your plugs from FCP Euro next time. Less than half the price and lifetime warranty—I’ve already traded in a “free” set. Also, if you get some dyno, 100-200, or 1/4mi times, be sure to post them up! |
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02-16-2021, 03:03 PM | #105 | |
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Remember you always want the largest possible gap size to ensure complete combustion. That doesn't mean always stick with a large gap no matter what, sometimes you don't have a choice and have to gap down because your coils might be weaker or you might be making enough power to blow out the spark. That is why you always have to read your plugs and look at logs and make an informed decision on gap size.
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02-16-2021, 03:04 PM | #106 |
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stock plugs are also fine up to 700 whp, no need to go to a colder heat range for no reason.
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02-17-2021, 02:06 PM | #108 |
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ZM2..
couldn't get a 3rd gear pull.. too much wheel spin. Here's a 4th gear but only to 5400. Sunday should be better for a log to 6500.. thanks for looking https://www.bootmod3.net/log?id=602d...90c61aac72258e |
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02-17-2021, 02:11 PM | #109 |
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