Quote:
Originally Posted by maverick9611
mains stay same size?
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Quote:
Originally Posted by Ralgha
Not ideally (usually), but just shims is a marked improvement for many. I put on a full Area-P exhaust, and ended up going DOWN a size in the main jet for the optimal tune. Don't know how the shims relate to original since they're different needles.
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Yeah, I went from stock 98 mains down to 96. And that's with 20% more high-end flow too.