big power loss at 6k

[viper066384]

I just built my car b18c1 the whole deal a 2.0 gsr i drove it for four days and was fine at 4 psi even had a traction issue, but i went to lean it out one day by adjusting overall fuel trim -10% the car died instantly so i put it back and still nothing i uploaded the stock p27 and and change it back to 5 bar set my boost tables same as before when it ran great. now it won't accel after 6k it will rev out but no power no accel at all but up to 6k its nuts. so i upped the boost to 12psi and same thing crazy to 6k then on its face can some one help?

[Spunkster]

Sounds like a tuning issue. I would suggest taking and getting is properly tuned on the dyno.

[deafy]

check your rev limit and full throttle shift and if you have vtec, when is it set to engage?

[viper066384]

fiqured it out not tunning or vtec who would of guessed that there was a short in the vss and that would cuase all these problems now with the 1000cc injectors and 20psi this thing is nuts.

[QUICKSILVER RACING]

Sometimes it is difficult to troubleshoot when two things happens at the same time. In your case leaning out and VSS shorted.

Enjoy your ride.

[ProDelSol]

I have the same problem as described except at 7k it loses power but keeps increasing rpm. After noticing that I ran it harder and watched my AFR go from 12.0 to 16.8 immediatly after 7k. I am going to try an add fuel at 7k and above.