Quote:
Originally Posted by WarmAndSCSI
In practice, I'm sure the difference between the two setups is negligible. Just don't trick yourself into thinking your engine owes you any sort of "reliability" once you force feed it. 11:1 CR + boost = ticking timebomb. Yes, good tuning offsets that fact to an extent, but the engine will almost certainly fail prematurely while boosted. You're taking an already high-strung, inherently imbalanced V6 and lowering its tolerance for detonation, pre-ignition, lubrication break-down, thermal break-down, etc. Not conducive at all to motor longevity.
Any claim to the limit of any OEM engine being good for a particular WHP or boost pressure range is conjecture at best.
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We can look to the 350z/G35 experiences over 7 years and many cars with tens of thousands of miles to see there can be OEM like reliability IF people control themselves. The tendency is to keep pushing the output of any kit and at some point (which varies per car), the reliability will be hurt. None of us can quantify what that means though. Does the engine only do 135,000 miles instead of 165,000 miles? 80,000 versus 100,000? Pay to play is always in effect. HP vs reliability is not a simple downward sloping straight line - more like a downward sloping gently curving line that starts to fall off steeply the farther the engine is pushed.