JasonS

iTrader: (62)

I have a S5 TII in a S4 TII chassis.

I've been tinkering around trying to work out a few bugs and I'm getting really close to having it finished. I cleaned my grounds and ran a couple new ones and that really seemed to help some hesitation/miss problems. I also replaced the filter on the Walbro fuel pump, but I still need to replace the fuel filter.

Anyway...
I can run 1st and 2nd, (every once in a while even 3rd) gear all the way out with no miss or hesitation whatsoever. 4th get up around 4800-5500 RPM and I get a really bad cut out. It like someone turns the key off and on real quick then it will accelerate as normal for a few hundred more RPM and do it again. As I'm writing this I wonder if it is fuel cut? I need to go read about that. There is a FCD sitting in the armrest storage compartment, but I was told this Rx7 is running stock boost. It does have a cone filter intake and open exhaust. Oh yeah...yesterday it sounded like it detonated in 3rd gear under heavy boost. It sounded like a little piece of popcorn over on the driver side engine compartment, ( I immediately got out of the throttle.)

Any ideas, just let me know and I'll check back later on.

Thanks guys,
~Jason

RETed

Unplug the boost sensor via the electrical plug and go drive the car...
Does it still do this?

If it doesn't, you were running into the overboost fuel cut.


-Ted

JasonS

iTrader: (62)

I unplugged the boost sensor and the "miss" went away, so I installed the FCD. With the sensor unplugged there does seem to be a hesitation, but we'll see how it does with the fcd installed.

Thanks!