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      02-23-2011, 09:48 AM   #20
Kyoshi71
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Drives: 2010 M3 Coupe
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Quote:
Originally Posted by Gearhead999s View Post
I was going to ask the same question!Without lowering the stock compression from 12 to 1 it does not suprise me that some of these failures are happening when the boost levels are elevated.At moderate boost levels (5-7 lbs)thanks to the overengineering that BMW has done on the S65 there does not seem to be these issues.I have a friend who is building Ford 5.0 Coyote engines with 11 to 1 and he feels 7 psi is the upper limit and his units are water/air intercooled.For higher boost levels he feels the compression must be lowered for reliability on pump gas.
I believe DLSJ5 runs Meth Injection too
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