need more rpm out of my 502 mag mpi
05-09-2002, 11:52 AM
#11
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Before you start buying, I have a 2000 502 mpi in a 271 formula. I purchased a new vortec flame arrestor, stainless marine exhust, and a Arizonia speed ecu. Installed all of these last weekend, I was turning a 28" Bravo 1 (gear ratio 1.63) @ 4850 rpms. I will do some test runs this weekend and will post my results. At least you will know before you buy! Also changed my fuel pressure regulator and raised my pressure 8 psi. Also said EVERY curse word I know because that job sucked! P.S. my boat weights 5250 lbs 
