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The red line is the as delivered run, the blue run is the final run after all tuning (about 20 dyno runs). The peaks are listed in the green and yellow boxes below (which is what VTEC Racer was referring too).
The biggest change in how the car performed was created by leaning out the bottom end (where there was very little boost). This had a dramatic effect on the rest of the power curve. Previous to that change, the car was misfiring on the top end and power would drop. I think there may still be an issue with the timing box, but VTEC Racer also has a check engine light for the secondary O2 sensor heater circuit, but resetting that midrun didn't seem to make any power difference.
As delivered the car was running as lean as 15:1 and never richer than 14:1. We brought it back down into the mid 13's at low rpms (where there is little boost) down to high 12's/low 13's at higher rpms.
Those are not dynojet numbers right? What is the % difference that you figure UL? More like 290hp on a dynojet right?
What I find interesting is that even on your dyno that reads higher, my Vortech car has 200hp on a dynojet at 6000rpm where this car has about 180 and that is a reading that is higher than a dynojet!
Other mods that I have include a Spoon Flywheel, ACT clutch and PP, HKS exhaust and the 4.44 final drive gears (which were dialed into the computer before the dyno runs). I'm gonna head back to UL's when I get a throttle body and a couple other things cause I hear the TB gives good power with a supercharger and even more when tuned.
12-05-2002, 10:54 PM
