You can ot really tune the ECU. If you read the treads on putting header in. You will get your answer.So after installing Catless Headers i was wondering if a tune is required after to make the car run better or get rid of the check engine light? just wanting to know before i go catless with DNA Catless headers with a megan Racing Y pipe.
Thanks for the help! whats agood brand for O2 simulators?A tune can get rid of the CEL but not absolutely necessary. You can just get o2 simulators to get rid of the CEL. The car will run just fine and adjust fuel trims on it’s own over time.
Obviously a tuner will be able to extract all the power possible.
Check out Quantum Auto for rear cat delete and ECU tune. There hasn't been any before or after dyno numbers on this (that I've seen) but the CEL issues will get deleted with this.Thats true, i fotget the Toyota ECU's are hard to tune.