<< LET/ EUROCHARGED CHI-TOWN TRACK DAY- MAY 30 >>


Always picking on me well lets see you try

My Faster silver color vs your slower black color

My Toyos vs you PP2
My ITG filtered SL55 intake vs your C3P/LET intake
My tank of 100 octane vs to your???
My LET tune vs your LET tune







Maybe you'll have a chance against her Glen but she loves to drag race on streets with many wins for money and she has a heavy foot especially since its a 6 speed....

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Well, I've got a mini-van that carries 8 people comfortably down the qtr mile and has satellite TV and radio too!!! Its a 4.0 litre with 255 HP and was made by DC
At our Oct track day, the local constabulary only ran a 16 if I recall correctly!!! Not real good!! I think I could run faster than that
The Best of Mercedes & AMG
Considering my previous trap speeds of high 115 low 116's were still based on A/F mixtures holding 10.2x I am loosing nearly 3mph due to this. This car has a history, when everything working properly of hitting 117-118 traps; so im down about 60rwhp
I am going to use this open weekend to start tearing into the emission system again, running test and trying to identify where I am having the issue.
Have fun and take some pictures!
Considering my previous trap speeds of high 115 low 116's were still based on A/F mixtures holding 10.2x I am loosing nearly 3mph due to this. This car has a history, when everything working properly of hitting 117-118 traps; so im down about 60rwhp
I am going to use this open weekend to start tearing into the emission system again, running test and trying to identify where I am having the issue.
Have fun and take some pictures!
weak......I see rich kleeman tunes all the time.....
I know what can fix that......
The ECU is reading a 18% + on the long term fuel trim (on both A & B) so something is telling the car its running lean, but based on wideband dyno testing, im buried in fuel.
Retuning it to compensate for the issue, technically could resolve the ECU trying to dump more fuel, but im trying to find out what is causing the ECU to make the decision to compensate so much.
if i pay for the track entry

Obviously i could be buying some of your products of'course
2. Slight right to merge onto I-55 N/I-70 E toward Effingham/Chicago 0.8 mi
3. Take exit 20A to merge onto I-70 E toward Indianapolis 83.7 mi
4. Continue on I-57 N (signs for I-57/Chicago) 120 mi
5. Take exit 283 toward Gilman 0.3 mi
6. Merge onto County Hwy-1700 N/E US-24 0.4 mi
7. Turn left at S Crescent St/US-24/US-45
Continue to follow US-24
Entering Indiana 30.5 mi
8. Turn left at S US-41 14.3 mi
9. Turn right at W 200 S 1.0 mi
10. Turn right to stay on W 200 S
Destination will be on the left 0.6 mi
looks like a few hundred miles for me, but i have a chance at figuring this issue out im all for it
The ECU is reading a 18% + on the long term fuel trim (on both A & B) so something is telling the car its running lean, but based on wideband dyno testing, im buried in fuel.
Retuning it to compensate for the issue, technically could resolve the ECU trying to dump more fuel, but im trying to find out what is causing the ECU to make the decision to compensate so much.
burp the cooling system, should be easy, but I doubt it woudl be causing that unless you were seeing high iat's
If it was cooling, your first run should be strong, followed by weakened runs
Tell me the exact symptoms you are seeing, and what you have done

A/F tanks @ wide open throttle.
... My IAT seems to maintain 117-125F (when rolling) ...
Engine Coolant maintains 179 to 200
Long Term Fuel Trim A & B maintains 18% +
Short Term Fuel Trim A & B seems to hold +/- 5% but spikes after WOT to 20%+ and just entering throttle (i will post a diagram when i get home)
MAF seems like its reading appropriatly ;
Check engine light comes on for periods but will go away. The code it throws is 2096 POST Catylst Fuel Trim Limit Low
My most recent drag runs:
Gateway International Speedway 1/4 (1 month ago)
12.427 @ 116.20
12.527 @ 115.99
12.844 @ 114.70
12.576 @ 115.27
Went into dealer and they replaced MAF, all 4 O2 Sensors and did a 'default init' ...resetting adaptations?
So i went to Winged Warrior @ Indy and at O'Reilly I got the following:
12.88x @ 113.70
12.490 @ 112.20
12.291 @ 112.83
So ... 'something' changed? the adaptations make my car slower on the top in? I am anticpating the fact that I am not making as much power allowed me to control my launch better, netting me a better ET , but killing my trap mph.
Last edited by alumar; May 28, 2009 at 05:56 PM.








