I have a ls/vtec and i want to know how high i can rev it, this is what i have a b18a1 block with b16 piston and rods with 97 gsr head. With a chip p28. How high can i rev it. and is the p28 the best ecu for the ls/vtec or is there a better one cause my friends says p28 are the best for them.

 

What chip and what tune are you running on your p28?
-Rik

 

Regardless of what chip you're running, I don't think you should take it upwards of around 7800 RPM with stock LS internals.