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Fox-4-Cobra · 05-08-2005, 06:39 PM

I did not clarify in my update post that the peak HP stayed put from 5100-5300 before dropping this time.

I dont know much about the computer systems and programs that work with the Dyno's. Would I have to get another run or would they have it saved from my tune so they could check it with the next upgrade? I would love to get it and e-mail it to you guys.

I figured the GT-40 Irons would hold me back some but felt the car would put out 275-295 RWHP as is. I was originally planning to use those heads until winter and then replace them for something better. If it's not the heads then I'am at a total loss for what would be holding me back.I did not expect over 300 RWHP with the GT-40 Irons with just a mill job and 3 angle on them. I have tried replacing the TB, Fuel Filter, Plug Wires and MAM and gained so little

I'll call the shop and see if I can get something worked out if they save the programs. Hate to drop another $ 100-150 on a retune without heads.

Appreciate the help guys.

05-08-2005, 06:39 PM	#4
Fox-4-Cobra Registered Member Join Date: Dec 2004 Location: KC Metro Posts: 20	Re: 331 Dyno #'s Dead @ 5100 RPM (Long) I did not clarify in my update post that the peak HP stayed put from 5100-5300 before dropping this time. I dont know much about the computer systems and programs that work with the Dyno's. Would I have to get another run or would they have it saved from my tune so they could check it with the next upgrade? I would love to get it and e-mail it to you guys. I figured the GT-40 Irons would hold me back some but felt the car would put out 275-295 RWHP as is. I was originally planning to use those heads until winter and then replace them for something better. If it's not the heads then I'am at a total loss for what would be holding me back.I did not expect over 300 RWHP with the GT-40 Irons with just a mill job and 3 angle on them. I have tried replacing the TB, Fuel Filter, Plug Wires and MAM and gained so little I'll call the shop and see if I can get something worked out if they save the programs. Hate to drop another $ 100-150 on a retune without heads. Appreciate the help guys. __________________ 1994 Cobra 331 Stroker, 3.73's. 1991 F-150 4X4 33X12.50's, Lift