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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 04-19-2004, 12:14 AM   #11
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Originally Posted by dbtk2
I setup a custom config file with AT LEAST the following parameters:

Vehicle Speed
Engine RPM'*
Knock Retard
Knock Sensor Active Counter
Barometric Pressure
Manifold Absolute Pressure
Long Term Fuel Trim
Short Term Fuel Trim
B1S1 02 Sensor (IIRC its MV or something, there are two different ones)
Injector Pulse Width
Ignition Timing Advance
Throttle Position Angle
Engine Coolant Temperature
Transmission Temperature (I think its actually called like transmission fluid temp or something)
Air Fuel Ratio
Intake Air Temperature

There are a few more that I usually log that I can't think of right now for some reason. But using just the ones I listed should give you PLENTY of info for basic tuning.

Hope that helps!

Depends on what your tuning but I would say thats pretty good. I dont log air/fuel as thats just what the computer commands, not what you acctually are getting. The only other one I would add is MAF Frequency. The less fields you have the faster the updates. You only need these 2 if you want to figure out how much boost your getting

Barometric Pressure
Manifold Absolute Pressure
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Old 04-19-2004, 11:26 PM   #12
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Yes, I'm thinking the ones on that list that i would ever try to tune without would be air-fuel ratio, and both of the fuel trim ones. Sometimes knowing what the computer is commanding for air-fuel ratio will tell you if you need to go rich or lean though. But I may pull those 3 parameters off of the config file I use on the GTP.

MAF frequency is definately a good one, and one that I have never logged before. Don't know why though. I guess I just never thought about it. I need to add that one to my list.

For some people removing intake air temperature might not be a bad idea either to speed it up, but that is what the happy **** uses to adjust timing and I would like to see what it is at so I can see what the actual timing is on that run compared to what it should be.

1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!
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