Quote:
Originally Posted by ahlem
I suggest you start with everything from behind the exhaust manifolds and see how you like it. It's kind of a PITA to have to mess with the exhaust manifolds and starting there and working back would be quite a bit easier. If you still want to go through all that effort later to get 5 more horsepower into a pretty heavy ride you will be older and wiser already.
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Ha! Thanks for the advice. Are installing the headers the PITA or the emissions hoops you have to jump through afterwards and persistent CEL on the PITA? From everything I’ve read it always seemed to me that headers were the most efficient way to boost power on the m54, no? With the stock manifolds in place I can’t imagine much benefit coming from anything you bolt on behind them, unless you’re just after the sound (which I am also).