In about two weeks (when my car is finally running right ) I will be going to Cobb Tuning to get a tune and get dynoed. Now my question is, is will I hit 300whp? (It's a mustang dyno)
Here's my mods:

-Megan turbo manifold
-Megan o2 housing
-Megan downpipe
-10.5 hotside
-Hks filter with aem intake pipe
-Hallman pro mbc set at 23psi
-Hks Hi-power catback
-Fp wastegate
-Walbro fuel pump
-Hks ssqv with uicp
-Ams lower intercooler pipe
-Megan test pipe
-4wheel slide tuned (But, will be getting tuned by Cobb)

 

Are you running a test pipe? If so, then I would say 290-305 depending on the dyno.

 

Cobb Tuning has a dyno jet right? If so then you should have no problem hitting 300whp+. My guess is 310 to 320whp.

 

ya I have a test pipe

 

Then I stand by my first statement. If I was you I wouldnt be concerned about how much you made, I would be concerned about how much more you make over your current tune.

 

no problem.

 

gid rid of the SSQV junk, car will run like poop, I know i did the same thing

 

working on it lol

 

No, you won't get near 300whp, because you are at 5500' altitude. The only way you'll hit 300 is if the correction factor is 1.25, and that's on a Dynojet. On a Mustang Dyno, fuhgettaboutit!

 

I think I should be close. . My buddy with a ww Evo 8 (with the same exact mods, except he doesn't have a 10.5 nor boost controller or test pipe) put down 267whp NOT TUNED on that dyno.

 

And I put down 299whp on a Dynojet in Denver uncorrected with cams, alky + 26psi, ported/coated manifold, ss o2, catless TBE, ported/coated hotside, and a custom flash. With that power, I ran a 12.30 @ 109.5.

He may have hit 267, but what correction factor was that? You didn't say uncorrected, and all the dynos up here have huge correction factors that are automatically calculated by the weather station.