procharger pulley change question
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procharger pulley change question
I currently running a 502 EFI with a M1SC, I'm considering changing the pulley from a 4.25 to 4.0. Should I plan on gettnig the ECM re-programmed? and any idea of what type of boost increase I will see?
Below are the numbers from last dyno pull:
rpm: 5200
hp: 709
oil pressure: 81.7
fuel pressure: 73.9
thanks
Below are the numbers from last dyno pull:
rpm: 5200
hp: 709
oil pressure: 81.7
fuel pressure: 73.9
thanks
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#5
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I think ArticFriends asked the magic question. A 1996 is probably a MEFI 1 and I don't believe they recognize boost (no boost compensation table). So, fuel is controlled only by rpm at anything over 100kpa. A MEFI 3 would be a great upgrade for tunability.
#6
I currently running a 502 EFI with a M1SC, I'm considering changing the pulley from a 4.25 to 4.0. Should I plan on gettnig the ECM re-programmed? and any idea of what type of boost increase I will see?
Below are the numbers from last dyno pull:
rpm: 5200
hp: 709
oil pressure: 81.7
fuel pressure: 73.9
thanks
Below are the numbers from last dyno pull:
rpm: 5200
hp: 709
oil pressure: 81.7
fuel pressure: 73.9
thanks
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Thanks for the reply's, since I'm an hour away from Port Huron, MI I will take my boat to Tyler Crockett and let him re-program the ECM, if I decide to change the pulley.
Numbers from last dyno pull:
rpm: 5,200
HP: 709
Oil pressure: 81.7
fuel pressure: 72.9
Boat 22 Donzi
Bravo 4 Blade 32 pitch
top speed GPS: 90mph
Numbers from last dyno pull:
rpm: 5,200
HP: 709
Oil pressure: 81.7
fuel pressure: 72.9
Boat 22 Donzi
Bravo 4 Blade 32 pitch
top speed GPS: 90mph