here is a thread of one being dynod with 3 consecutive pulls, had borla exhaust put on at the dealer, kind of wierd numbers though, base is 375/375 and then after just a tune it ends up being 461/458

http://www.modularfords.com/forums/s...ght-59107.html

and if you read they mention another dyno done on SVTs forums that dynod 407 stock and 475 after a tune, can Ford really be detuning these cars that much?

 

Thats odd to see it make that little power dead stock and then gain that much. I dont think Ford would detune them that much, but maybe there is an inconsistency going on somewhere. Hard to tell about any of it without acctually being there and seeing it for yourself.

 

yep there seems to be a total inconsistancy through all of the dynos Ive seen so far, which would be the only constant, maybe they are getting them on there before the comps are totally set, they seem not to like the first run on a dyno as much.

 

Maybe you had the factory de-tune still in place

 

Thats what I was thinking. Maybe the tuning is taking it out of that anti-flogging mode.

 

I just got my GT500 and I am going to do tons of dyno testing. Follow along as we add parts to increase performance. Today is baseline and Exhaust day

Here is a video of a Ford GT (kinda off topic) this shows what a set of 60,000 volts coils did to the supercharged 5.4. I hope to get similar results with the GT500

http://www.granatellimotorsports.com/video14.htm