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Freshly installed JB4 - ISO question
So I just installed my JB4 last week and I am loving it. I use ~E30 and map 5 is very strong, holds 15psi very well.
I do notice however that under WOT boost pressure will increase to about 10-11 psi, hesitate for a half second or less, and then proceed to boost up to the 15 psi nicely.
I have read post on here that the ISO firmware will build/control intake pressure more smoothly.
Anyone else have experience with this?
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