Topic: How can 264 aftermarket cams decrease power

I bought aftermarket cams and replaced the blacktop cams. My last dyno was in September 2013 and I made 129kw and 183nm. I installed the cams I bought and have the car dyno tuned, I made 125kw and 175nm. I checked the timing markes and the compression. It's been seven months since the last dyno. But the tomei cams has higher lift and more duration I expected a slight increase in power at least. The duration on the dyno has increased too so therefore the drop in power is evident.

Your help will be much appreciated.

Re: How can 264 aftermarket cams decrease power

Did you re-shim the valve clearances?

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Re: How can 264 aftermarket cams decrease power

dynos are not consistant. more important than peak figures, how is your torque curve looking? maybe you ended up with a better and flatter curve at the cost of a few peak kw

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