turbo fuel maps
#1
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turbo fuel maps
I've been having an issue with getting drivability improved on the Z28tt, and was wondering how your fuel/timing/accel enrichment was programmed. I've already increased the MAP enrichment from 10% to 22%, and still get a lean pop on stabs of the throttle. The TPS enrichment is at 4ms asyc pulsewidth (adds 4ms of fuel to the base pulse), so I guess I should bump that up too... FWIW, the package is 399 cid, AFR210's, Pro-ram single plane intake, gale banks tt manifolds, T04e's, and 2.5" downpipes.
#2
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Join Date: May 2003
Location: Houston-katy
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Car: 1986 Irocz- Houstons Fastest Street
Engine: 408 LS1 w/ 2 stage
Transmission: Turbo 350
Axle/Gears: 3:73,3850 lbs , best of 9.92 @ 138
what kind of dfi? on my f.a.s.t. system it is pretty easy to tune with a dyno. what system do you have? it shouldnt be hard with some dyno time and good o'2's
#3
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It's a DFI Gen 6. I added pulsewidth to the TPS table, and all is well now. WOT was good, so the dyno will come later when I start optimizing the timing tables at WOT.
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