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Originally Posted by userlain
Er,,, the 3SFE i4 can safely take 4-5 pounds of boost.
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Yes, I believe white90dx is running 5 psi.
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Just don't go crazy nuts like 88 LE and crank up the boost
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My problem was with the factory internal wastegate and tuning. The spring in the wastegate was to stiff and I was seeing 10 psi.
It ran for 2 weeks on 10 psi, till the #4 piston grenaded.
O well, I don't have to worry about it anymore. A guy with a flatbed tow truck and forklift hauled it off yesterday.