Hi, i've recently bought a 2wd sapphire cos which was wwaayy too low....so much that the exhaust was squashed pretty bad, probably down to 1/3 of proper diameter in one place. Just wondering if this could be causing the jerkiness i'm getting when i try to give the turbo some grief? Sounds almost like it's misfiring at high revs and the power delivery isn't at all smooth.
Anyone got any ideas?