exhaust suggestions for R34 GTT auto?

[enytsw]

Hi guys,

Thinking of changing my stock exaust for something with more oomphh...

Any recommendations - in terms of power increase, sound, and of course $$$?

Also should I change the downpipe as well? Heard that some back pressure is needed for an auto. Would the downpipe change be advisable??

 

[BLaCkHoWLiNG]

1JZ!!!


*cabut*

 

[joethurr]

3 inch piping , catless (if you are not an enviromental activist), get a midbox for auto, there is a difference..for muffler, you have a lot to choose from... *garang* sound, bassy sound, silent setup...

 

[airtreknic]

Joethurr i'm currently using Catless HKS Hi-Power Silent is from mid box till the back and now thinking of removing the catalatic converter and change the downpipe will there be any difference. Any suggestion guys??? Will there be more kick at the top end of pick up???

Enytsw, you custom made your downpipe or bought from those performance parts shop??

 

[kaminari]

Errrr more air POLLUTION....heeee

 

[airtreknic]

yah thats the problem, cannot have best of both worlds.

 

[kaminari]

heee, dun worry nobody will give u summon for tht at Malaysia...only ur neighbour complain so loud exhaust everytimes start the car!

I`m running catless too, and realize a bit power and torque on mid and high end (>4500rpm).Since catless the O2 sensor also like to read and give RICH a/f to ecu.Always pop up fire on high rpm everytimes shiftdwn gear when the engine enuf warm.

Fuel compsumtion is more than before~

 

[farizio]

3 inch straight pipe. no muffler. at the back bukak 4 inches.

 

[airtreknic]

farizio i think it's gonna sound worst then a track car........

 

[joethurr]

airtreknic, what kaminari said is right, u will feel a gain in torque and power... not to worry at all about the environment... "smoke now, pay later"....

 

[airtreknic]

yeah true true, smoke now, paylater. any suggestion to buy a new downpipe or customize one. Is the cat the one which looks like a bee hive and is it before the downpipe??? And actually will there be any problem after removing the catalatic converter???????

 

[V-Spec]

airtechnic, the missing 'link' is where the cat is located.

 

[enytsw]

Many thanks for the feedback...

Airtreknik - I have yet to install a downpipe. Am thinking of installing it together with the exhaust as heard it is supposed to give more power. But at the same time, unsure if there will be too much loss in backpressure required for an auto. Is yours auto or manual? How's your HKS exhaust by the way?

Joethurr - is the midbox supposed to help with the back pressure? On the sound of exhaust - prefer low bassy...Basically, want the power but not wake up the neighbours... :)
any good suggestions?

 

[kaminari]

Then it`s a good idea u change the turbo outlet too wth the downpipe.If concern abt back pressure, S-flow could help a bit.For bassy and low noise find oval type muffler (5Zigen/Nismo) and comes wth mid muffler.

 

[airtreknic]

Enytsw, after i have change the HKS exhaust feel better flow and smother ride during top end.

V-Spec, ok now i know where is the cat and i've decided to remove it.

Guy's, where can i get the downpipe and turbo outlet for my GTT stock turbo?? And just say if i decide to upgrade the turbo can the turbo outlet be reuse or i have to change ???