Quote:
Originally Posted by GOTMH8N
My JB4 and cone intakes put down 320whp on a low reading dyno. It's a huge difference over stock. Plus you can run a lil e85 and make another 30whp
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I want to do the same setup to my 335xi coupe but is there any long term damage to anything from the jb4 i just get soo many mixed reviews about putting a tune chip in