Aftermarket Exhaust

[Dbl100]

What exhaust should i put on my p5. i want to put a ford focus rs cat back on, but i want to know other options tht would sound better. sending links would be better.

 

[Mr Snurd]

What is your goal? power gain or noise? They are generally an exclusive OR.

That said, on a normally aspirated car there is not much to be gained by screwing around with the exhaust system.

 

[Dbl100]

i’m trying to go for power.

 

[pcb]

Apparently, a 4-2-1 header provides the best flow and can increase horsepower.

You can also get a high-flow cat and a larger diameter exhaust but as far as I know they both only makes a difference at high RPMs.

You can also delete your pre-cat (which is what a header would do) but then you have to deal with a P0421 CEL.

 

[Mr Snurd]

i’m trying to go for power.

A header and other parts might get you -at best- 3-5 hp at the very top end. There's not much room for improvement.

 

[Mrpatches]

I have not had mine on a dyno but after out in the AEM CAI noticed a big difference in torque, gas milage, and better pick up at higher speeds dropping into 4th or 3rd

 

[Dbl100]

yeah i have an aem cai and it makes it more fun lol

 

[Mr Snurd]

I have not had mine on a dyno but after out in the AEM CAI noticed a big difference in torque, gas milage, and better pick up at higher speeds dropping into 4th or 3rd

Butt dynos don't count...