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      10-10-2007, 08:40 AM   #86
Garrett
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Drives: 2004 330ci
Join Date: Nov 2005
Location: Mich

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Quote:
Originally Posted by kurichan View Post
That goes into the "so what" column.


No.

It should not be a limitation because the turbos are small size, low pressure units.

I'd bet that if you raise boost on this car to a point where exhaust flow becomes an issue, you're going to have serious engine durability problems, especially considering all the e9x's that are overheating.

This engine, in factory tune, already appears to be overtaxed in terms of heat. I'd be pretty careful about pushing it too much further unless you're willing to roll the dice on the cost of an engine replacement.

By the way, at what point are the post turbo exhaust manifolds merged on this car? Does anyone know? Do we know the pipe diameter? I suspect that a freer flowing muffler and freer flowing cats are the only reasonable exhaust mods that would make sense on this car if flow ever really becomes a problem.

Sorry, but the 335i folk have already reached that limit, I am just wondering how much sooner the 135i will encounter it inefficiencies due to the 135i reduced exhaust sytem.
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