I have a 2007 manual V6 and already have a K&N drop-in air filter and will be installing a single Flowmaster AT muffler soon. How much rwhp do you all think I will be putting out. I'm also ordering a ASP UDP. How much rwhp will I have after each mod? Thanks.

 

Not sure about the V6s but on GTs axlebacks arent worth any extra hp, theyre purely for sound. For UDPs, theyre worth about 10 hp so Id estimate that youll have around 10 more than you have now.[8D]

 

In my GT udp's added about 1-2 hp, can always inflate if you would like and say 10 :-). Axle backs, just sound, but its a mustang so it needs that :-)

 

The v-6 stangs gain maybe 7-10 hp from a/b since the stock ones are horrible.

 

Its just a muffler.....nothing more. The only thing you are changing is sound, thats IT. Im not down takling them, i have slp lm's on mine, but i know all im getting out of those is sound, no power.

 

Looking at dyno's and UDP's installed. The max HP number that you see at the end might go up by 1HP, but here and there in the rpms, you can see an increase of 10HP, might not be the max but it's there.
You might gain a few ponies with your mods.

 

I am talking about the v-6 stangs theydo see a change in hp with new exhaustnot ourGT's i know the slps do nothing just sound