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      12-07-2025, 05:49 PM   #1
Cannonfodda101
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help with datalog

Hoping someone smarter then me can give me some help with this datalog
https://datazap.me/u/cannonfodda101/...og=1&data=3-20

took the car to the drag strip and it was way slower then expected had a rough look and can see boost not hitting target and some timing corrections on 2 cylinders anything else im missing here?
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      12-07-2025, 07:54 PM   #2
PerformanceEngSolutions
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Quote:
Originally Posted by Cannonfodda101 View Post
Hoping someone smarter then me can give me some help with this datalog
https://datazap.me/u/cannonfodda101/log-1765148143?log=1&data=3-20

took the car to the drag strip and it was way slower then expected had a rough look and can see boost not hitting target and some timing corrections on 2 cylinders anything else im missing here?
Your intake air temps were very hot and that was likely your main issue. You started the run at 111 deg f and ended at about 138 deg f. It’s clear that the DME was pulling a lot of timing because of it.

Boost was definitely fine for stock turbos and all your fueling and AFRs looked good, except for fuel trims since they got as low as -20%.

Biggest questions are do you have an upgraded intercooler or are you on the stock one? If you’re on stock then you need an upgraded one if you’re going to run the stage 2+ maps. If you have an upgraded one then it seems like you were sitting in line waiting a while for your run which caused your engine to get heat soaked.

And how about ethanol content of your fuel? You were on an E30 map but based on fuel trims it seems like the ethanol content in your tank was lower. A lower ethanol content than the map is rated for will also cause big timing corrections. It’s always best to run more ethanol than less (within reason, which is +10 to +20% ethanol than the map is rated for max).

Last edited by konstat; 12-07-2025 at 07:57 PM..
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      12-10-2025, 03:35 PM   #3
Cannonfodda101
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jeez didnt even look at intake temps have a wagner 5 inch stepped cooler that seems to be struggling ambient was only 25c so thats something i need to fix before it gets really warm also going to look to see if i have a leaking injector with the stft difference thanks
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      12-16-2025, 09:28 PM   #4
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What supporting mods? Stock turbos? If so, you’re pushing them pretty hard. That tune has no taper…pretty much just requesting a lot of boost and letting the turbos output as much as they can. Honestly, it doesn’t look like the car is particularly happy. I’d try something less aggressive.
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      01-11-2026, 04:35 PM   #5
Cannonfodda101
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Quote:
Originally Posted by E30 Racer View Post
What supporting mods? Stock turbos? If so, you’re pushing them pretty hard. That tune has no taper…pretty much just requesting a lot of boost and letting the turbos output as much as they can. Honestly, it doesn’t look like the car is particularly happy. I’d try something less aggressive.
dci downpipes cooler e30 its an mhd stage 2+ map weird that its is considered aggressive
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