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I believe I will go with the 42lb injectors as I do not plan on going with the Dinan tune. I have someone local and with the headers and running 8psi of boost I think the 30lb injectors would be on the low side.
I just ran some calculations and I know someone doing a similar setup got 440whp (517bhp). If I run ~50psi at fuel rail to get that power I would need the 42lb. The 30lb injectors can only support 380bhp where the 42lb can support 500bhp.
Not sure how incredibly accurate that is as I am running ~355bhp now on 19lb stock injectors!
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2001 540i - Orient Blue
M5 bumpers, wheels, mirrors
S/C, water/air IC
A1 Headers, Random Technology Cats, Eissenmann Exhaust
3.15 diff, evosport power pullies
Koni Sports, Eibach Springs/Sway Bars
Last edited by bricas45; 11-17-2011 at 01:51 PM.
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