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Do you have spacers on there?

I'm getting ready to MHD my Catless MT Supra but was starting to hesitate after reading this thread. I'm in SoCal, so we have weak 91 octane. I'm wondering if I'm better off with the stock tune or getting the flex fuel sensor if it avoids the issues stated with the OTS Maps and shifting. If it...

Dang not sure if i should be upset or happy I'm not spending money on car parts this week aha

I'm late to the party, I created an account and signed in but the discount isnt applying.

Has any MT's tried out the MHD Flex Fuel Tune. I'm wondering if the issues get fixed if the tune knows the exact ethanol level.

Would these be good on the street as well in the Southern California Climate?

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