drakken789

besides having a cancerous exhaust or non at all really, when I first start the car I let it idle out back down to 1,000 and then I rev up to 1500 and exactly that point right on 1500 the car sounds like theres something sort of blocking the factory y pipe, but when i sort of hard rev it all the way up a little past 2000 its very smooth, and when it idlesits very smooth, would this ratty rev so to speak be caused by my exhaust being rusted out?