mogs132

hi guys im new here so hello, ive just purchased a standard 07 sti and was looking for some exhaust advice. i like the look of the standard back box so was wondering what i could do further up to make it louder and open her up a bit.

any one have any advice on mods to do? and will i need a remap just for some exhaust mods?

also any recommendations on air filters to fit?

one last thing :P

what is the difference between a dump valve and a waste gate?

sorry for all the questions just new to subaru so any advice would be great cheers

IggyRB320

iTrader: (9)

If you want to keep the OE back box,you could replace the centre resonated section with say a H&S straight through centre section.
You wouldn't need a remap for this either & should release a bit more burble!

DT-SPD

iTrader: (7)

Hi and welcome to Scoobynet

I have a STI air filter in my STI, it was expensive but is a nice item. Cosworth ones also seem to have a good reputation.

As IggyRB320 says, a H&S de-res centre will add some noise, I am running one with their std size rear box and it makes a lovely noise.

A wastegate allows exhaust gas to bypass the turbine in the turbo to limit the amount of boost generated.

A dump valve dumps boost pressure from the intake system when the throttle is closed, preventing it from stalling the compressor wheel.

mogs132

thanks for your help but dt-spd whts a sti air filter? sorry isit a make or just standard?

i want the dump valve noise but herd the waste gates can also make a similar noise? or can anyone reccomend a dump valve? will i need a remap for it?

DT-SPD

iTrader: (7)

STI is a make or a brand at least

This is the Air filter I've got
http://www.scoobyparts.com/acatalog/...IR_FILTER.html

Waste gates can make some noise but thats quite a high end mod on a road car. Dump valve can be changed to a more noisy version but doesnt give any performance increase. Std dump valve does make some noise especially after a remap.