Originally posted by John
but 2.5 inch downpipe doesnt really become a restriction til after 350-375whp, so unless you are near that realm, i wouldnt bother. And if you ARE, then the car is more track oriented than street and you should probably have a 2nd car anyway. If you MUST have it all, look into an a/c compatible manifold, they are out there, but they are very pricey
good info
But how about a 2" DP!!! thats what my POS is! a 90deg ELBOW 2" to a 2.5 to 3
btw: the 2" elbow is about 3-4 inches long