Someone also asked about Exhaust - As most of you know, I switched to 103 Octane or E85, eliminated the Cats, Tuned it to Clean - No codes and so clean, Fixed the Ford exhaust airflow situation (factory has a 90 degree left/right bank collision that does not flow air) Eliminated the Resonator, opened to 2.5" pipe, routed through a High Flow Stainless Muffler and out the back with a Roush Tip - Sounds like a Shelby and rocks down the road without a nasty drone!
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