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I have just installed a Cocsa exhust on my 2004 auto and at full throttle, around 50 m.p.h., when the car shifts from second to third? there is a hissing sound similar to the sound truck air brakes make [but not as loud] ANY HELP!! or THOUGHTS THANKS
Interesting I am sure my Corsa Tourings did not come with gaskets when I installed them back in 99 and my C5 does not hiss
What kind of Corsa's do you have ?
Touring, I think the hissing sound is coming from the passenger side of the car, at the back of the motor? Sound is hard to pinpoint [at 50 to 60] but I think it is by the passenger floor board.
Last edited by Ron Matheson; Oct 3, 2005 at 07:53 AM.