KA24DE Powerband- Low power until 6k?

[Zryan2010]

Hello all, I have been lurking on this forum for quite a while and rebuilt my 91 ka24de from information on this site. I have attempted to search for a solution to my problem but to no avail. The car has about 8000 miles on the rebuild and runs well, except it does not seem to pull until 6000 rpm. The power difference is very sudden when it does kick in. I know the stock range of power seems to be between 4500 ~ 5500 rpm. My question is, Is there any reason for it to act like this? Is there anyway to adjust the power band to a more reasonable rpm range? If someone could please suggest anything i might be able to try, it would be greatly appreciated.

Thanks all

Car specificska24de rebuiltEGR removed2.5" exhaust- no catStock timing etc.
Modified by Zryan2010 at 3:51 PM 10/24/2009

[seang]

Intake manifold butterflies?

[asoomal]

Sounds like a knock sensor to me.

[Zryan2010]

It was the tps sensor.