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Originally Posted by RegisBou
Also note that most (90%) of subaru's that are being tuned and the sounds we hear are turbo cars. If you turbo any engine the exhaust note is different so don't be scared.
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Turbos act as mufflers so they can quiet things down a bit, but they don't "change" the exhaust note, as far as I know. What will change the tone itself is the style of header. WRX and STI come factory with an UEL header which gives the car that characteristic boxer rumble.
Quote:
Originally Posted by RegisBou
I have never heard a flat 4 with ITB's though....that prolly sounds like heaven!
Just found a vid....ITB's SNARL ON A BOXER
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That sounded awesome. Wonder is that was with an EL or UEL header?
FYI, here's what the factory UEL header sounds like when mated to a bad ass exhaust setup (in this case, Ansa).
Just listen to the car as it slowly rolls out, around :017 in.