I have b16head/b20 block with i/h/e and everything else is stock. It's a OBD-0 PR3 ECU. Do you guys thing if I fine tune the air/fuel ratio (with Hondata,VAFC,etc) will I get noticeable different in performance? Or it's not worth it and leave it stock ECU? Thanks.

 

Tuning the a/f to a proper ratio will net you more power. Having a tuned car is always a bonus in my book and definitely worth it.

 

Deffinatly more reliable tuned.

 

The computer you're running thinks it's feeding a 1.6l engine, when it's really feeding a 2.0l engine... not good. You need something to correct for this, the stock computer can only do so much to richen the mixture.

 

AFR all motor 12.9 -13.1 any lower is too rich any higher is too lean.
And reguardless of what the people say who have never tuned in their life, it will be a night and day difference depending on how you tune it.. make sure to mess with every part of the map u can, low and high cam, and the igiton.. as well.. before u do any tuning tho make sure ur timing belt is good, and ur timing is on mark, with ur dizzy set at 16 or 18 degrees..

 

Thanks for the opinion. Right now I adjusted my fuel pressure based on sparkplugs condition. Is this good? And I'm thinking just to get VAFC2 and AEM UEGO wideband a/f ratio to tune it with. Is it good enough?