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Old 08-24-2020, 05:18 PM   #31
codename_pig
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Drives: '14 Scion FR-S Monogram
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Quote:
Originally Posted by ls1ac View Post
You were asking for higher boost?
The smaller the number, the higher the boost. The smaller the diameter the faster it turns.
75 was stock, 72 will run with most of the same programing, 69 needs another belt and different programing.
Just an FYI.
I have all three but run 75 for reliability. I did not find a great difference in performance when switching to 72.
Hmm, interesting. Maybe it's not worth the effort then given that I already have the 75mm installed if the 72 doesn't make that much of a difference.

And pushing 12psi w/ the 69mm does seem like a bit of a stretch on a stock motor as a daily that I need to rely on to work everyday...
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