performance
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New User
Joined: Feb 2006
Posts: 8
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From: So. Cal
performance
Ok, here's the deal...My 99 LD F-250 5.4 4X4 has a cold air intake, 75mm throttle body, superchips programmer, and cat back 3" exhaust. I want to do more. The exhaust shop told me that the manifolds on this truck are big enough that they pretty much match the performance of headers. Does anyone believe this? Also, I had put a Granatelli MAF on it, but kept getting a CEL. My programmer told me the it was causing my truck to run lean. Is that just a bad MAF? Last, what do you recommend for an Ignition system? Thanks in advance.
Last edited by yfzduner; Feb 24, 2006 at 09:29 AM. Reason: Left out engine size
Senior User
Joined: Jun 2004
Posts: 313
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Dont waste your money on headers...not worth it and they leak all the time, your stock manifolds are just fine! Gears are where your real gain is at...thats my opinion anyways. I would take a set of gears over tuners and everything else personally if you want to do more! Id say stick with your stock ignition!
