Quote:
Originally Posted by brucelidat
So talking to Seb, the car has 2 sets of cats. These tests were done with secondary down pipes, meaning the main cats (he said the main ones were pretty wide so that's good at least) were still in place. This means those who want to maintain stock cats (at leat the primaries) can still run some partial downpipes for gains and those who don't care can get better gains than these (all of which are pre-tune BTW). This is all for the q50 which I assume will be the same on the q60. Not sure if the z35 setup will be the same.
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Cats? Nah those will all be gone if they make a z and I get ahold of it.
Full straight exhaust
