I can't see how the Gotts do much for FE. Or most CAIs. I ran for several years with a CAI on my 5.4L and, while there were some apparent initial upticks, really nothing much improved over the long term. But a tuned CAI, which replaces everything with a more flow-freindly runner, would have a better chance of making a change (good or bad) than the Gotts, which only makes changes in one area. I also had a chance to do some limited steady-state fuel flow tests on an engine dyno (4.0L Jeep) and couldn't see any remarkable differences. Would love to get a Modular on an engine dyno for about a week!
My truck is the 8200GVW and has 4.10:1 ratios. At any level of modification, it always does better at lower speeds. I think the Modulars like low rpms the best
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Sun, March 13th, 2011, 12:37 PM
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