Quote:
Originally Posted by DiscoQuinn
I don't have access to E85 in my area. It seems so frustrating that everyone tells me to go E85, and most of the information is based around the US market solutions.
I wrote a stage 1, OFT tune to my ECU, but stage 2 requires a CAT delete when the cats do nothing for the engine tune and only emissions. So I'm confused why so much information suggests changing the headers to delete the cats, when it's not the cats causing the dip?
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I run the OFT Stage 2 w/ the FT86 UEL catted headers on 91 octane. I've never thrown a code and have passed SMOG without any manipulation, reverting back to stock tune, swapping hardware, etc. As mentioned, and in 5-year-old simplistic terms per your request, the torque dip is primarily a by-product of having equal length headers.
The best solution is a 1 2 process. Get UEL headers to change the hardware and flash Stage 2 to maximize your hardware change. Catted UEL headers will be fine. One trick told to me at the very beginning was to always disconnect the battery when doing anything with sensors. Something about the ECU having some degree of learning built-in. I did so for both my headers and CAI. By the time you're done installing and hook everything back up, you shouldn't throw any codes when you start it back up.