have messed with a potentiometer on my tps. it didn't change my air-fuel ratio's at all, but it did change my ignition timing, if i tricked the computer into thinking the throttle was closed more then it really was. the timing went up a few degrees. it also lowered the rpm's at which the transmission shifted. the torque converter stayed locked up more, and the engine went into open loop under acceleration a lot less (almost never). all good things for FE.
if i went too far though, the engine would surge and lope and a CEL was triggered, so i adjusted it for best economy at 50mph, and took the pot out and replaced it with a perminant resistor.
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96 stratus "es" v6 auto-stick
supplementary propane injection
injector kill switch, alternator kill switch
Charging system voltage increased to 15.5V
secondary and tertiary 12v batteries in the trunk
on-board battery charger
lights converted to led's
potentiometer controlled tps for ign timing
welded straight pipe in place of cat-cons
removed egr
3 inch body drop
90psi fuel rail & -50% low volume injectors
run 15% diesel 85% gas
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