Horsepower estimate

[tek302]

I dynod 395whp and 351wtq with just a aed tune. Since then, I have opened side pipes, added cat deletes, roush mufflers, and Airaid intake.

How much hp tq you guys think I'm pushing? I've been guessing around 420whp and 360tq.

I plan on getting a hpipe from mrt to finish it up.

 

[IamRacerX]

It's hard to pin dyno numbers on these cars. Mine has track key, exhaust discs out and a K&N drop in filter and made 410rwhp.... In theory removing the cats and adding a CAI should add 30-40 rwhp with appropriate tune. So on my car would that mean I will make 440-450? I think not... The shop I dynoed mine at said most Boss' make 420 with said mods.... So my car is a bit of a freak. In my case I'm leaving my car as is. But yes I think 420 is very doable with your mods.

 

[BOOSTD5.4]

You will be 410-420 WHP. With LT's and a CF driveshaft, and similar mods, I made 440-448 WHP. I ditched the side pipes and had cats on my car with 1 7/8 LT's.

 

[tek302]

Nice. Thanks guys

 

[railroad]

Not to bash a product, but I bought MRT off road H for my Shelby. I did not notice, the tubing is 2.5 inches, not the 2.75 of the factory pipe. In addition my pipes had about 1/4 inch weld build up inside where the H was welded in. I tried to clean up some of the obstruction and did put the pipes on. The fit was good. I do not know how much the smaller pipes and obstructions are costing me on power. If I get brave, I will spend some more money and try a different set of pipes. Just telling it like it is.

 

[tek302]

Supposed to be 3" tubing. Not much other choices for factory headers or shorties

 

[65sohc]

I dynod 395whp and 351wtq with just a aed tune. Since then, I have opened side pipes, added cat deletes, roush mufflers, and Airaid intake.

How much hp tq you guys think I'm pushing? I've been guessing around 420whp and 360tq.

I plan on getting a hpipe from mrt to finish it up.

What octane are you running? When I had my car tuned at AED three years ago I gained 7 hp on 91 octane. He probably could have gotten a bit more with better fuel, but that's all we have. Adding a Steeda intake added another 13 for a total of 20 with intake and tune. I'd be surprised if the MRT H-pipe adds anything significant. I haven't seen any before/after results with just that mod, but I noticed even the X-pipe on the new GT350 is of a similar design in that it is of slightly smaller diameter than the main pipes it is welded to. The dyno also makes a difference, obviously. On the AED Dynocom corrected hp in stock configuration was 404. Stock here in Fresno on a loaded Mustang dyno was 385.

 

[tek302]

93 octane