[michael1023]

what is a cat-back exhaust system mean actually? Is a cat-back exhaust system includes rear section and Y-pipe (with catalytic on), or it is a rear section with catalytic? Thanks for all helps.

 

[Billy02987]

It replaces everything aft of the catalytic converters, not including the cats themselves.

 

[max_R35]

The GTR exhaust is made of 3 parts

1.Downpipe "Stock contains 2 cats"

2.Midpipe or Y-pipe "Stock contains 2 cats + 1 muffler"

3.Catback or rear section "Stock contains 2 mufflers"

 

[MF92]

yes, the cat-back, is the exhaust system after the catalytic converters, since the cats since in the stock y-pipe, the cat back system is the pieces after this

 

[TeKiZeRo]

It's pretty much implied in the name, so its the exhaust after catalytic converter and all the way back to the exit - hence "cat-back".

 

[michael1023]

The GTR exhaust is made of 3 parts

1.Downpipe "Stock contains 2 cats"

2.Midpipe or Y-pipe "Stock contains 2 cats + 1 muffler"

3.Catback or rear section "Stock contains 2 mufflers"

thanks! so the OEM exhaust doesn't have the catalytic converters?

 

[max_R35]

Nope