putting all new exhaust on the iroc. i am determined to do true dual exhaust (please dont tell me that a single pipe is better...im not here to debate and ive already made up my mind) but was wondering on size. wil dual 2.75" pipes fit? already have coated hooker super comps and was thinking of doing flows 40 series mufflers. whats the largest diameter TRUE dual exhaust system that will fit on an 89 iroc? any info would be great, thanks


Damien

 

I don't see why not, except if you want it to exit the rear, then it might be kind of tight.

I still don't see how anyone can argue about duals.

 

i have seen in person a formula with hooker SC/LT and 3 inch true duals with 40 series flows. I am going to run 2.5 because of noise. The guy said that he didnt have any ground clearance issues and even had a h pipe, it looked real good, it was ran down the driveshaft tunnel, and the flows were under the back seats, he said he beat them up 3 or 4 inchs. I am planning on running the same setup if i ever get my darn engine together. hope this helps. jason

 

I am running 3" duals from the headers back to (2) 1-chamber mufflers.But I am also having clearance issues since my car sits almost 2-1/4" lower than stock. All depends on how you route the pipes.

 

niether do i

i would just go ahead and do 3" true duals instead of 2.75"

 

hey RS speed, how do you have your pipes ran? hows the lowered car with long tubes and true duals working out?

 

The pipes are ran straight back and end right before the rear axle with 1-chamber Flows. The real clearance issue is actually with the longtubes rather than the rest of the exhaust.The only bend in the pipes is at the tranny xmember where the pipes are bent slightly upward after it clears the crossmember. With the car being lowered like it is,my collectors have kissed the ground a few times. Lowered car and duals on a non dual car-sacrifices,sacrifices.

 

how much is it lowered? I thought about getting the eibach kit that lowers it 1.5-2 inches, i think its the sport kit, but didnt know ho it would work. thanks for your reply. jason