I certainly feel the AP2 NEEDs a higher redline. It simply slams into the redlimiter @ 8200. Especially for mountain driving an extra 400 rpms could make all the difference.

8600 rpms for the ap2 would be perfect, and I am sure with ap1 cams the Ap2 2.2 would make power all the way to 9k.

 

Thank you sam. I didn't realize Deathsled purchased your car. I remember you were one of the first people in Florida to do this mod. I have an AP1 ECU collecting dust, but the thought of a MASE'D AEM in my car makes me think twice about the swap.

 

Exactly, but it's still got 700 rpm's to redline and then a little buffer above that before the rev limiter kicks in. The stock AP2's make max power at 7800 rpms with an 8000 redline and a couple of hundred above that before the rev limiter kicks in. There's simply not as much time to feel any power drop off on the AP2 cars.

Also, I think Honda has gotten a better idea of how well these engines are going to hold up in the real world so they're being a little more aggressive with the fuel mapping and ignition curves on the AP2's than they were with the AP1's. If I remember correctly, the early year model AP1's richened up a bit after peak power rpms (8300) and that's one reason they had the power drop off that they did. New AP1's (2002-2003) do better in that regard and the AP2's are better still except they don't rev as high overall.

 

do u miss the power that the ap2 ecu gives u over the older ap1 chip?

 

What about an F22 with AP1 cams to 9k? Does the power still drop off??

 

thinking of doing this tmrw. really hope i dont blow up the engine.

 

started a new thread, but also wanted to update this one

impressions are that the engine feels leaner, needs to be pushed harder to go, but also feels more flexible. extra rpms give great sound and feel while keeping u in vtec. loss of torque noticeable at low revs.