Quote:
Originally posted by blue00gt
The dyno test I saw in MM&FF netted a 2-3 hp loss by removing the intake silencer on a 99+ GT. They were very surprised as this always helped on 5.0s.
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Just goes to show that Ford actually did their homework on the latest Mustang design. It is the culmination of over twodecades of chassis refinement and a pretty good engine program.
The best ways to gain performance with these cars have already been mentioned.
Gears help move you through the powerband as quickly as possible since the small displacement 4.6L takes a little while to get moving as opposed to the 5.0L cars.
H-Pipe. The stock H-Pipe has 4 catalytic converters and an additional set of resonators to reduce noise. Replace this restriction with your choice of h-pipe/x-pipe with or without cats and you'll see a 10-20rwhp gain.
Pulleys are documented 8-10hp gains. Every hp counts!
Other than those three simple hitters, the big power will only come with a power adder. Even a small, conservative 6psi blower will put you at 350+hp. Enough to really liven up your car and push it to exciting performance levels.