[random]

Has anyone done dual exhaust on their Allante and if so any problems? Also what kind of mileage are you'll getting?

 

[carnut]

True dual exhaust would be difficult. Legally it would require two cat converters. On my 88 I used a muffler from a 90's Pontiac TransAm. Copied the cut out from the left side transferred it to the right side under the bumper. Used chromed rectangular tips from a Z28 to match the rectangular taillights. Slight burble from exhaust at idle and a roar on accell. but no noise while cruising. Mileage better? maybe 2 mpg.

 

[random]

Thanks carnut I'll take 2mpg right now 18 mpg seems to be the best I can get. But it is worth it. The car is just too much fun.