Entrenched

So my car mods and power were as follows

Stock 550 miles (Royal Purple Oil) - 361 rwhp 347 rwtq
ARH Headers and x-pipe 850 miles - 391 rwhp, 367 rwtq
JLT Cold Air and Lethal John Lund tune 1900 miles - 436 rwhp, 409 rwtq

All runs were done on the same Dynojet at Hoyt Automotive in Lafayette, LA. Car runs awesome and everything was purchased from Lethal. I love my GT and can't wait for my first 11 sec time slip.

2007Vert

I had my stock 5.0 dynoed on Tuesday. It made 375/361.

lawman1

That is not stock 2007 vert. You have a tune which is worth 15-20 horsepower and you are running on 93 octane gas which is worth 10 horses. No tune on 91 octane you'd be pulling 350's like everybody else.

2007Vert

The car is 100 % stock. The car is running 93 octane which is not worth 10 rwhp. Maybe 1 or 2 rwhp. Call Chris at MD 877-234-5551 if you do not believe me. They just dynoed the car on Tuesday. I am scheduling with him a dyno run after the installation of a JLT intake and tune. I will post those results too.

lawman1

2007 vert: 93 vs 91 is worth between 5-10 hp. On thursday you posted your tuesday dyno results. Your posts lists your vehicle as having a 93 brenspeed tune and Stingers? How is that stock? Was that a stockpull before the tune and mufflers? If so how much did you gain from the tune? Post those results too. All info on gains from tunes is helpful.

StayingFit24_7

wow, those are impressive results..that was completely stock right? Impressive. Oh, also to all the people who are reading, sorry I made this post but never replied, I forgot about it sorry.

StayingFit24_7

Those are good numbers too, 30 horsepower gain of headers and an xpipe? Nice

StayingFit24_7

So I have finally caught up to all comments on this thread, and I have seen a lot of people's 2011 5.0's around the 350-360 range stock, then some of those are a little higher..it seems like their are a lot of variables effecting the horsepower rating though...

I actually saw a thread on here where the guys 2011 Mustang GT 5.0 was only putting out 309 horsepower on the dyno?

2007Vert

lawman1,

Those upgrades were for my 2008 Shelby GT. Look at my avatar for a picture of the car. The 2011 is completely stock.

chain1

I remember the first couple of articles on the 2011 put them on a dyno and found them to be underrated. They came up with numbers closer to 435 at the crank. It would actually make sense for them to be a bit underrated as they don't want to take any sales away from the shelbys. Kind of softens the blow to those who bought a 2010 too.