Re: efi reprogaming
 

Ditto,
Mark fixed me up last spring also.

Re: efi reprogaming
 

can he do merc 500 efi?

Re: efi reprogaming
 

I have had great luck with Mark as well. Here's something to think about. If you want a good engine to idle and respond like a factory engine, you MUST use a combo he has done on the dyno, or plan on sending the motor to him to dyno your combo. I choose the route of picking my own combo last year, and ended up sending the motor to the dyno. Mark got it working prior to getting it on the dyno, and it did OK, after that I wanted to know the power, but when the motor came back he made it work much better than it was. Only small things that I could of let go without the dyno, but it was perfect. The biggest thing he can do on the dyno, is give you a good lean cruise RPM band. If he has to guess, hes going to keep it on the rich side to keep your engine from destructing. Before the dyno, stock 500 EFI I got 1.33 MPG. After the increase, 570HP, and dyno, I got 1.55MPG. Worth every penny to get the dyno calibration in my opinion.

Good Luck

Re: efi reprogaming
 

Arizona Speed and Marine is now selling tools and info to reprogram yourself. If your into that....

Re: efi reprogaming
 

www.pmefi.com :evilb: :D :D

Re: efi reprogaming
 

Yes :drink: Mark is the man


http://www.offshoreonly.com/forums/s...d.php?t=122003





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Re: efi reprogaming
 

my ecus are of to marc