Bumping up my MEFI 3 rev limit?
04-29-2009 | 11:23 AM
#12
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Joined: Jul 2003
Posts: 240
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From: Peoria, AZ
If it has an O2 bung I can tune it on the water for $500. This will be a custom tune as needed, the merc tunes are pretty spot on. I would need it by my shop in gilbert first to inspect, set base timing and verify I can get into the mefi. AZ Speed is now closed as I understand. Mark c/o Speed Sports 480-539-4842 current ride-DCB F29
AZ Speed did a reprogram on my MEFI3 when the Whipplecharger was installed. He inserted a custom aluminum adapter with an O2 bung between the riser and the exhaust manifold. I think he did a decent job on the program because EGTs and plugs look good and I don't get soot on my transom. Unless you can improve upon what he did, I would rather leave the spark and fuel curves alone. Although, since the first reprogram, I did change to heads with 2.30" intakes.
Now the million dollar question.....
Is there any torque left in my setup above 5000 rpm??? Maybe I shouldn't be running there in the first place.
04-29-2009 | 12:25 PM
#13
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Joined: Feb 2005
Posts: 4,333
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From: USA
Ben at www.mefitunig.com will give you a print out of your current program and bump the rev limiter for less than $100
