Quote:
Originally Posted by nic370
Hmm ok
I have a pipe down into my wheel well now with a big k&n on and it felt like it pulled a bit harder with the one topz supplies indent know what psi I've lost
Just wonder how well these pre filters would keep the dirt out
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Do you run without a boost gauge? That would be a pretty common way to see what's going on. Especially if your modifying breathing components.