Performance wise: How many HP can you improve for an 2004 F20C engine, with stock or say CAI only, from an emanage ultimate and k-pro?

 

you will gain more from k-pro but it will cost more. if you don't plan on heavy modding i say go with ultimate best bang for your buck.

 

there are a lot of variables here. i'd have this post moved to the engine tuning forum for best results.

 

K-pro is a better unit. We do have an engine management sub forum here on s2ki which may be a better place for this kind of question; but I reccomend you read the stickys there and try a few searches before posting

 

if you're sticking with reg. bolt ons, just stay with the e-manage ultimate. if you're going beyond that, the k-pro is a good option as well as the aem ems.

with the em-u, expect around 10hp gain, 8-10 tq on an ap2 w/or w/out and intake.

 

Hero..any info about EMU? I already have it but with few problems.. can you help ?
I have CEL on and on scanner the codes are for VTEC failure and TPS low voltage.. I tried both JP17 1-2 and open..same thing...and for TPS.. I pushed on full throttle to let EMU tool detect the voltage and it turned out to be 4.63 and 0.25v yet still both code appear and CEL is still on

 

sorry man, can't help with that. i know a lot about what it does, but very little about install.