Should I Get a 3Inch Exhaust System???

[TurBoGs-T]

I Have a 95 GST and i have a 19c Turbo on it. I still have the stock cat and cat back on it. I need to know from all those who have 3in Systems (3downpipe,3cat,3catback) is it worth it. will it make that big of a difference in the performance of my car.

 

[sleepinGSX]

DO it dude, 2.5 is for little girls, haha

 

[RedTurboEclipse]

Yup, I say go for it. 3" o2 eliminator downpipe to 3" high flow cat or test pipe to 3" catback. and make sure the catback is a true 3" (not those which neck down inside somewhere that you don't know about). just my .02. others may think differently.

 

[hd223]

It depends how fast you plan on going in the long run, but I would still go for the 3".

 

[SetH]

3 inches all the way

 

[L2RTSiAWD]

Originally posted by SetH
3 inches all the way

Werd

 

[tjh-dsm]

You have a 19c and are still runnig the stock cat-back exhaust? Man, get a 3 in. one made ASAP, that stock crap is holding you back big-time. Don't you get a lot of boost creep?

 

[candela]

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Originally posted by SetH
3 inches all the way
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Werd

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[98TsiAWD]

Originally posted by TurBoGs-T
I Have a 95 GST and i have a 19c Turbo on it. I still have the stock cat and cat back on it. I need to know from all those who have 3in Systems (3downpipe,3cat,3catback) is it worth it. will it make that big of a difference in the performance of my car.

You definately need at least a 2.5 turbo back, but 3" is only 100 more bucks. www.rnrracing.com for $600 you can get a 3" Turbo back o2 housing eliminator exhaust (no cat).

 

[larryd]

get 3" if for no other reason other then you may need the extra diameter later on?

 

[doug]

From everything I've read, the difference in performance between a 3" exhaust and a good 2.5" exhaust is very minimal.

 

[TurBoGs-T]

Thanks everyone for the help i guess 3" it is!!!!!!!!

 

[SOURCE1064]

It's all about the size, 3".

 

[Tevenor]

Originally posted by tjh-dsm
You have a 19c and are still runnig the stock cat-back exhaust? Man, get a 3 in. one made ASAP, that stock crap is holding you back big-time. Don't you get a lot of boost creep?

You don't get boost creep from an undersized exhaust flow. You get boost creep from a very effecient exhaust flow and/or a restrictive wastegate flow.

In other words, he has to worry about creep after he gets the 3", not before with the stocker exhaust.

 

[tjh-dsm]

Sorry, brainfart, meant to say "backpressure" since he's still on the stock exhaust.

 

[GoriLLa]

OK here it is agin ... I have a 3" downpipe, no cat , and a 3" thru muffler
before i went out and got it had a 2.5 press bent exhaust done, notice that when i got on it, car felt like it was being "held back", so i went and got a 3" exhaust must better and a big inprovment... car responded alot quicker and could tell that the car could "breath" alot better so these people here that say get a 2.5 have no clue what the hell they are talking about people.
People we have turbo cars 3" exhaust is the way to go anything else is a waste of money .

 

[joel3434]

People say that 3 inch is too loud and all that nonsense. I never heard what 3 inch piping sounded like so is it real loud, or does it sound good

 

[GoriLLa]

it is loud but it should be verry deep , sounds nice to me

 

[doug]

Originally posted by GoriLLa
had a 2.5 press bent exhaust done, notice that when i got on it, car felt like it was being "held back", so i went and got a 3" exhaust must better and a big inprovment... car responded alot quicker and could tell that the car could "breath" alot better so these people here that say get a 2.5 have no clue what the hell they are talking about people.

I can understand the difference between a 2.5" pressbent and a 3" mandrel-bent....

Got any timeslips to back up what you "felt like"?

 

[Eclipsed]

3 inches all the way
it dont matter about the size of the boat its that motionin the ocean that does