engine is sputtering at high rpms i have a supercharger any thoughts

 

perhaps you should elaborate on your situation alittle more. Under what conditions is this happening, is it at WOT, partial throttle, etc.

 

might be a fuel problem?

 

Have you tuned the car? Mine ran like chit with the jrsc before I got it tuned. Lower revs were "ok", like below 5K, but anything into VTEC just fell on its face. I had major fuel problems until it was tuned.

Need more info about your setup.

 

i jsut replaced the o2 sensor on a friends del slow. he was getting a sputtering effect after 4K rpms or thereabouts. this was diagnosed due to the car not hesitating in open loop when the car was started. and it sputtering as soon as the car went into closed loop.
replaced the o2 sensor and the problem was solved.

 

what engine management are you using, vortec fmu?

 

was the front or rear o2 replaced on the del sol?

i have on the way a hondata system and 550cc injectors, i just wanted to make sure that it wasn't an internal engine problem

 

front

 

If you get too frustrated with this...just sell it to me. I need one.