Is The Exhaust My Car Came With Any Good?

[TUF250]

Hi folks. I have bought myslef a low k, very clean r33 gts-t manual.

have serviced all the oils, plugs and timing belt and am now ready to start the power mods.

My question is in relation to the exhaust. My car wa imported with a stainless steel 3 inch mandral exhaust. It has two large mufflers on it. the one at the back is slightly larger. They have a JASMA badge on them and K&F i think it was stamped into them? lookign inside with a torch the back one seems to be straight through but has two pipes running through the body but single 3" in and out.

My question is are these any good? do they flow well and not worht changing? the system has a nice note but is very quiet (definately legal!) Any recommended way of getting a little more noise out of it without bringing on drone?

thanks in advance

Jason

[TUF250]

also does anyone have a pic of the standard cat, i think the system has a aftermarket cat on it but it dosnt have a brand on it so i cant be sure.

I want to change the dump pipe to a 3inch unit soon so wondering if its worth doing the cat while im in there

thanks!

[lachlanw]

it will be fine

untill you can put it on the dyno and have anough mode to prove it is a restriction it will do

[lookingforboost]

when you pull the dump pipe off just take the cat off etra 2 bolts and have a look the inside of it if its still the compliance cat then you wont be able to see light through it or nrealy none and a high flow you should see heaps easy

Mine has a 3" system on it a trust cat back with 2 mufflers and its very very quiet but still flows no problems and when on the dyno wasnt a restriction at all so just because its quiet dosent mean its no good.