Ok well i just had my itr fully rebuilt top and bottom end. Every seal bearing etc. Profesinally rebuilt also. The head has cower valves and springs. I just resently swapped it into my del sol. Broke the engine in and gradually began getring on it over a period of a couple days, today i fully got on it and i notice when it hits vtec it doesnt gain any more power. Vtec. Hits loud but not hard at all. Will only rev to 7500 tops before sounding like **** and the power loss is horrible but doesnt hit a rev liminter. Unhooked the vtec selonid and it only revd to 7000 and hit a rev limiter and still feels like loss of alot of power. I am running the stock itr ecu btw. Took out my plugs and theres white with some light brown if that matters. Vtec Selonid screen is clean to. Not sure what the problem is so maybe someone on here coud help me out. Ive rode in a couple stock itr'sand this feels like half the power it shluld have no exaggeration. Hopefully someone can help. Also im using the wiring harness off of the original y8 tha was in the del sol. Had to extended 2 sensors. Semms to idle fine and drive fine untill you get on it. Almost feels like hesitation or maybe a slight miss at times. Thanks

 

Makes no sense whatsoever to rebuild and then use the stock ECU that has NO IDEA that you've made those aftermarket modifications when it's expecting to be interacting with stock components.

 

Everything is stock tho. Besides diferent valves and springs.. would that really make that big of a diffrence ? Yes the engine was rebuilt but back to stock specs or as close as possible.