Hopefully somone can help out before I take my car to the dealership tomorrow:

Problem: When I accelerate over 4,000 RPM my car begins to hesitate and not fully accelerate. It will still vtec at 6,000, but it is hesitating/acting sluggish the whole time.

My car runs at 3 bars heat level.

I have denso plugs, which were installed 6 months ago.

I put $10 of Exxon 93 octane gas in, thought I might have gotten bad gas, soI used all the gas, got new gas from Mobil, and problem is still happening.

If I hold the clutch in and rev, I can rev to redline and it does not seem to hesitate.

Any suggestions? Did I explain properly?

Could one of the spark plugs gone bad? This a sympton of cylinder failure?

 

Do a search on MAP sensor, a likely problem.

 

Changed the oil ,reset ecu, flicked the Map Sensor a few times and everything seems to be ok... very weird.

Thanks for the heads up, Ive also ordered a new map sensor to replace. Thanks.

 

I vote "Map Sensor". Let me know what I win.

Wesmaster

 

Maybe a dirty fuel filter ?

 

Could also be a little water in the gas, even though you ran a whole tank out. I'd be tempted to run some alcohol-based gas cleaner with your next fill-up.

 

Car is still running good again after I:

"Changed the oil ,reset ecu, flicked the Map Sensor a few times and everything seems to be ok"