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      01-05-2012, 03:15 PM   #84
Twisted Six
CarbonFiber Engineer @ ZeroMassMotorsports
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Drives: Z4si-coupe
Join Date: Mar 2009
Location: -Laguna Beach Ca.

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Quote:
Originally Posted by Roffle Waffle View Post
I could trade my throttle response for more highway punch, but I didn't know lowering compression would dramatically hurt low-end torque and I'm glad to learn it. I don't want to turn this into a turbo/supercharger thread, so lets end it with this:

I'm very glad someone's doing it on the z4m platform and can't wait to see the results!
I wouldn't be too afraid of a higher compression turbo engine Roffle. I had a 9:5-1 comp. turbo inline six that drove great and managed great drive-ability daily. It felt strong off boost and awesome on. Turbo lag was not noticeable in this arrangement.

It only limits how high your boost can go effectively/safely. In mine, it was at 18lbs for street and pump gas. With my efficient intercooler system I never suffered pre-detonation or heat issues.
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