Hondata

Why are you running two pumps?I think the 255walbro alone will support your hp needs.try taking out the msd inline pump and drive the car the same when you experience the acceleration stumble..in this way, you can isolate if the msd pump is causing the problem.msd inline pumps are noisy since they ...

you said you're ecu is fine so no compensation issues here..I assume your fuel system is working fine and can support the HP you're aiming.Try checking your electrical system e.g pump voltage, charging voltage and battery voltage..your fuel pump needs the current to run the needed fuel volume and p...

well mostly all tuners try to tune the car on its lowest ECT and lowest IAT cause usually when either go high on normal driving fuel gets richer and timing gets retarded! myself my cars IAT is going really high in the summer and i can notice am getting 18 deg at ~8psi! thats considered as allot of ...

it was tuned on a fairly hot day, also no adjustments were made to the IAT or ECT

Nope not over boosting, holds 17lbs and I tuned it on pump gas up to 20lbs

Spunkster wrote:Have you tried your ecu in another vehicle?

Just got word, it's not my ECU. My tuner tried his Dealer unit and still the same problem. Anyone have any suggestions?

In addition to trying it in another car, please post the calibration the car was running as well as a datalog showing the problem. I dont have the datalog on my laptop as the car is at the tuners shop 2 hr's away. Not sure what you mean by the calibration the car was running. Keep in mind that this...

Clutch wrote:How old is your WB sensor? Your sensor could be going bad. Could try your sensor in another car.

Wideband is brand new, beside the fact that i have 4 new piston ashtrays from when it leaned out last year

it doesn't seem to be a fuel problem, atleast that wouldn't cause the rev limiter problem with the over reving

My car was tuned last year with an S200. I have a 94 1.8l vtec. Now for no apparant reason over 10lbs of boost it leans out. Map sensors is working, fuel pressure is good, and timing is set right. We have tried to add fuel ( alot ) and it still leans out bad, like into the 14's ( the car was tuned t...