I'd like to have my fans kick on a little sooner. I see this can be accomplished two ways. By getting a wiring harness and some other hardware or have the PCM reprogrammed. My friend informed me of this site:
Jim
99 Mag Red Coupe, 6 speed, Z51I'd like to have my fans kick on a little sooner. I see this can be accomplished two ways. By getting a wiring harness and some other hardware or have the PCM reprogrammed. My friend informed me of this site:
Jim
99 Mag Red Coupe, 6 speed, Z51
For the fan, agree, the PCM route is better than a wiring change.
Had a mild 'tune' in early February. Didn't do a fan change. This car doesn't do much work in city or 'rush hour' traffic. I opted for a conservative, mid-rpm tune. I believe that the only changes were fuel and spark tables in the 2500-4200 range. Didn't opt for changes in rpm limiter or an increase in WOT HP at 5000. Upside is improved pull in third and the car is quicker. Downside is my tendency to shift too early. Dyno numbers show the torque is still there but the gut sensation is that it's flat at 4500. Definitely not a Z06 feeling. Average of three 1/8 mile slips improved by 4 mph. (Quick, talented, and handsome youngster like Dad could probably squeeze it to 6 or 7 mph.)
$ 375 for the work. Included coarse tune, dyno, a second data load, another dyno and then steady state scans at four points in the changed range. Those scans offered some assurance that I won't melt the engine.
Suggestion & my opinion for a car with some miles on it: Unless you feel that hot 1/4 mile runs are a must and that engines are 'disposables,' go with a tuner who dynos the tune on the vehicle then scans all the critical parameters after the changes.
Enjoy & wave--even at C4s!
-- PJ '89 Hookercar '02 e-blu coupe
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