I'm having a problem with my engine rev limiting at 2500RPM. Its a B16 OBDII to OBDI conversion and I just did a turbo engine build on it. When I rev it up it will hit 2500RPM and drop down to about 1200 and then rev back up and do the same thing. On my hondata I'm throwing the Codes for IAC, Knock sensor and Vtec spool error. I'm also hearing some engine knock pretty seriously. Some locals say it might be a bent valve, wrist pin problem, or a warped crank. any ideas on this issue would be great! thanks in advance for the advice!!

 

wow. fix those CELs first and then try a stock ecu. your hondata can hav limiter preset to 25oo right now.