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R33 GTS-25T turbo back system advice.

Nickg
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Nickg Contributor

Nickg

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I have a r33 GTS-25T Auto with 10.5 psi, air filter and blitz DD bov, it has now come to the time where i need that bit more and i was thinking turbo back including dump pipe 3inch. iam new to this "modifications" scene so i come to ask for all you skyline drivers wisdom...Will there be a noticable change in performance? if so where at? top end? bottom end?i have also heard that i can run round 12psi with this mod.

ps. Anyone know any places where i can go that do a good job? or of any good prices?

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Messiah Mentor

Messiah

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ok exhausts are pretty straight forward as far as it all goes. Your main consideration should be noise and price.

Normally its one of the first things people do as it allows the later mods to really show through.

The bigger the exhaust the louder it tends to be (althought exceptions may occur).

I'm running an r33 s1 gtst and the first thing i did was get the zorst upgraded to 3 inch all the way from the turbo (inc dump pipe) and whack on a 3inch tip. It wont really effect how much boost you can run instead it effects how it responds to boost if that makes sense.

As for power, well the engine should feel less limited through the entire range.

Next question... aftermarket or custom??

I side with custom as to me a tube is a tube and where as mandral bends etc are good, after market mandral bends are the same as custom mandral bends if of good quality, so why spends a whole pile of extra cash. All your looking for is the shortest least restrictive way out for the exhaust.

My exhaust cost me 1300 from western mufflers in fairfield syd, there pretty good in my eyes. By bro in law uses them to build his drag cars exhausts aswell, they know what they're doing, with the added bonus that the owner talks like dr nick from the simpsons. Also in my eyes it has a nice note and isnt too loud

For the time being i'd worry less about upping boost and more about prepping the engine so that when you do up the boost the engines ready for it.

Next i'm gonna do the ecu then boost controller then fmic. I'll replace my BOV once boost gets high enough that i have to, otherwise its just cop bait and noise.

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