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What is stock? GTSt

mupkant

By mupkant,
in Engines & Forced Induction

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mupkant Enthusiast

mupkant

Posted
Posted

A lot of people blab on about how their gtst are 'stock'

yet they have 3inch exhuast. Really is this stock?

Can you compare a pure stock vs a stock + 3inch exhuast?

the car with the exhuast will win provided both drivers equal skill level.

i have a pure stock nothing done expect a K & N filter. Yet i've bet many other stocks with 3inch exhuast. Shit driver? probably.

Any way my MAIN quesiton is, has anyone here who are PURE STOCK

boosted their car with bleed valve. YES pure stock NO exhuast but boosted say 9-10psi?

ANYONE?

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi mupkant, perhaps the reason you are not getting much response is because what you are suggesting (boost up & no exhaust upgrade) is pretty silly. The standard exhaust on a turbo car is always the weakest link, improving the other links won't help. ie; you are already choking the turbo with the standard exhaust, so turning the boost up is pretty much a waste of time.

Plus, in my opinion, you are risking ceramic turbine failure earlier than if you upgraded the exhaust. This is because strangling the turbine does not allow the heat to escape and heat will kill the ceramic just as fast as excessive boost will.

Maybe that answered your question, in a round about way.

RBN1 Mentor

RBN1

Posted
Posted

hehe yeh my car was completely stock when I got it. As in factory stock. The exhaust even had the date & month of the car's manufacturer stamped on it. No air pods, boost controllers. Took 11months for the importer to find a good condition factory stock 32. Only thing aftermarket was a Addzest aftermarket headunit.

Anyway i did what Sydneykid was talking about - stock car with more boost. Sure it gave it more power but you could definately feel the exhaust choking everything. Car now has 14psi boost, 3" 5Zigen dump-pipe back exhaust & remapped ecu. Funnily enough its a lot easier to drive because the power comes on sooner due to the exhaust. (I have dyno graphs of what each mod did)

Anyway yes, I have talked to lots of ppl who also tell me "yeh my car was stock too, all it had was 3" exhaust, pod....".

Duncan Grand Master

Duncan

Posted
Posted

Yeah, mine is exactly what you described, dead stock except for bleed valve. (yeah, I know, that makes me an idiot :D )

It runs about 9-10psi.

For me exhaust note is a concern, the stocker is nice and quiet, its a daily driver and I hate droning exhaust.

Also, to me, I reckon a stock skyline is plenty fast enough for a road car, I'd rather learn how to make the most from a slow car, than to drive a faster car poorly...

Only other "performance" mods are 18" wheels and a tighter diff. Which makes mone pretty much the slowest GTST going around :)

(B1) MR_fanny Grand Master

(B1) MR_fanny

Posted
Posted

my car only has a a 3" front pipe and dual cat back sys and im not surprised that stock as a rock lines will probably beat me....though no one has yet:D:D i find that with the exhaust u loose the kick when the boost hits at 2.5k but when it hits the 5k mark when full boost is on then its a different story:D

are u planin to run 9-10psi mupkant?? apparently u can get about 9psi by just gettin a full exhaust system??

rev210 Grand Master

rev210

Posted
Posted

mupkant,

No problems doing the bleed valve first. The exahust is always a good thing but, if you got no $ then the $90 for a bleeder is cheap and gets rid of the 'two step' boost of the factory controller. You can always keep the boost down to 10psi to save the ceramic turbine.

It works. so go do it.

RBN1 Mentor

RBN1

Posted
Posted

mate, second thing I did after my bleed valve was the exhaust and I tell u what. Its quiet as anything. No in cabin drone at all and its even fairly quite at high rpms.

U just have to make sure you get a well designed one. Thats why I got a jap brand Jasma approved one. (5Zigen) The damn thing is so quiet i'm thinking of getting rid of one of the mufflers!

For me exhaust note is a concern, the stocker is nice and quiet, its a daily driver and I hate droning exhaust.
unwritten law Proficient

unwritten law

Posted
Posted

Mine is completely stock besides the K&N panel filter, turbo timer, and 2 stage boost controller. I bought it with the controller & timer on it. I have kept up with 32s only having like a cat back system running pretty much equivalent boost & same with 33s, but i have been hosed by a few running decent exhausts & being well tuned. It is running around 11psi. I think the previous owner should have focused on the exhaust first. Early next year i am getting a custom 3" turbo back zorst, along with heaps more goodies....

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