I've yet to see 5 or 6M, even with all the mods, not see a drop in power on the dyno by 6500 RPM. Most of them peak from 5500-5800 RPM. I think my car peaked at close to 6k with the cams in it, and a few hundred RPMs lower seat of the pants without. Usually the reason you see this is because of what the head will flow combined with the cam timing.
Brief 5M Question
I suppose this is where to put it :roll: . Why does the 5M run out of power at about 5400 rpm. Is it just a lack of fuel, or something else? The reason is a couple of us were tossing around the idea of trying a SAFC (Megasquirt since we're broke) on one to get it to make power up to 6K or maybe even 6500. Any thoughts?
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