 Fuel Trims? |
 Oct 31 2005, 02:05 PM
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 Eats and sleeps DSM jargin.  Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636  |
What Fuel trim do you guys usualy run on your logger? I read some where to try and get them as close to 100% as I could.
Right now my fuel trims are L=139.5 M=127.9 H=134.2 On saturday when I went to Nates, My knock was off the wall 42 was the highest and I think we got it down to 21. Did we do something wrong, or is this right. Not that I don't trust Nates tuning, I just want a second opinion on this. Because I still have knock and my fuel trims are all showing I'm running lean. Unless I'm reading it wrong. -------------------- Thanks, Bud!
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Nov 1 2005, 10:06 PM
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 Eats and sleeps DSM jargin. Group: Members Posts: 1,995 Joined: 27-November 04 From: Yates City IL Member No.: 389 |
If your getting 0.0ms of injector pulse and it matches up with a "slamming the wall" incident, I'd say its fuel cut.
The way I understand it, is that the fuel system doesn't matter, it's strictly air flow related. Increase airflow with the stock ECM programming, and you're going to get fuel cut. I've got a rewired 190 in mine, and I hit cut at around 3500 under WOT. Curiously, at the strip I don't get fuel cut...I think because my RPMs never drop below 4000 all the way down the track. MAF translators delay the onset of fuel cut by the way they modify the air flow signal to control fuel. My understanding the only way to eliminate fuel cut is to have the ECM reprogrammed. -------------------- 92 Eagle Talon TSI AWD "The Black Golfball" How fast can a 14B go???
91 Chevy C1500 "Problem Child" **SOLD** 01 Impala DD 07 Trailblazer Wife's new DD Cars run on blood, sweat, and horsepower... Without the first two, you can't get the last" SOB Racing "Sitting On Blocks" |
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Posts in this topic
BudmannG Fuel Trims? Oct 31 2005, 02:05 PM
natedogg Your fuel trims are closed loop controlled and dep... Oct 31 2005, 02:56 PM turbohcar Well, on my drive home, my fuel trims remained a c... Oct 31 2005, 06:48 PM ncgalant Looks like now you have added to much fuel(on the ... Nov 1 2005, 06:53 AM BudmannG QUOTE (ncgalant @ Nov 1 2005, 07:53 AM)Looks ... Nov 1 2005, 07:11 AM black92_tsi_awd I think ncgalant post was for turbocar.
Budmann... Nov 1 2005, 07:20 AM BudmannG I set the pressure at 37 psi when I was at Nates. ... Nov 1 2005, 08:05 AM turbohcar Sorry, didn't mean to steal your post Budmann.... Nov 1 2005, 08:13 AM BudmannG No stealing done here it was for everyone. If it h... Nov 1 2005, 08:30 AM natedogg QUOTE (turbohcar @ Oct 31 2005, 06:48 PM)Well... Nov 1 2005, 09:55 AM ncgalant sorry about that, yes my post was for turbohcar. ... Nov 1 2005, 01:26 PM turbohcar Now, I've got a MAS Translator that I can put ... Nov 1 2005, 06:34 PM black92_tsi_awd Fuel cut should show up as an open throttle, no in... Nov 1 2005, 07:50 PM turbohcar I'll have to do a log of airflow but there are... Nov 1 2005, 08:38 PM JMoushon QUOTE (turbohcar @ Nov 1 2005, 08:38 PM)I... Nov 1 2005, 08:48 PM turbohcar This isn't gentle either. I meant to relate i... Nov 1 2005, 09:02 PM
natedogg You can also tune around fuel cut by using the tra... Nov 2 2005, 07:36 AM |
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