performance upgrade questions

[Nrage33]

Hi guys,

I'm in the middle of deciding how to upgrade my gtst's performance, and number of options have come up over the last few months...currently i am chasing a fmic before anything else happens, but after that, i dunno wut i could do to the car and would like a few ideas.

right now the car has a hi-flowed T03/T04 hybrid turbo, complete turbo back exhaust, pod filter, stock cooler, S-AFC, EVC 3 boost controller.

It managed to make 200rwkw at 15psi of boost after tuning the S-AFC (comes to abt 270rwhp).

Could anyone gimme an idea of wut sort of power this car could make once a fmic is installed? The car would probably be running at 10psi most of the time, or maybe even stock...I just want to know wut sorta power I would be making. If it feels sufficient, I may call it quits as far as performance goes, and concentrate on the suspension and brakes like a good boy.

Hypothetically, a budget of around 4k-5k would be do-able after the fmic is installed...would take a while, but do-able...would like to know wut could be done with this money.

I have more in-depth questions, but will post them once opinions have been made regarding these questions first.

Please feel free to talk at length, then everyone can benefit from the know-how

thanks,

Zak

[warrick]

i have a fmic for sale,see my post in FS section.

cheers

warrick

[Sydneykid]

Hi Nrage33, I would suggest a GTR fuel pump as the next mod as you are getting close to the limit of the GTST fuel pump. Then a standard R32/33 GTR intercooler (good up to 300 rwkw) usually gives a 20 rwkw increase over a standard R32/33 GTST intercooler. I would then suggest an adjustable exhaust camshaft pulley. That should give you 230 to 240 rwkw which is pretty close to what the standard internals will handle.

Hope that helps

[Nrage33]

sydneykid,

thanks for the info...what does an adjustable exhaust camshaft pulley do anyway?

I'll definitely look into the fuel pump tho, I can feel these current fuel pumps I have are near their end...

If i wanted to reinforce the internals, what exactly would I need to do?

[Bl4cK32]

get a better engine package rb30/25

[Nrage33]

already have a rb25...

[DennisRB30]

Ahh, but it's only 2.5 litres.... RB30 bottom end...

[Guest RedLineGTR]

2.5 lit should be fine depends on how much power you are after..and if you are going over 240rwkw then probably some mild internal work...but after that you can push it even more depeneds on how much money it comes too in the end...remember tuning and dyno time as an extra cost..

[Cubes]

This is what happens when you are making 240rwkw with an RB25 and then slap a RB30E bottom end in there.

http://www.skylinesaustralia.com/forums/at...=&postid=433625

Due to the head flow charastics the final power is still roughly the same.

I guess the saying still applies.

There's no replacement for displacement. :burnout:

[Lepperfish]

...what does an adjustable exhaust camshaft pulley do anyway?

Good question!

[EnricoPalazzo]

Increases mid range torque.

[Cubes]

or top end power. or a happy medium between the both.

[Lepperfish]

How much are they worth? Which brands ect?

[Cubes]

Check out UAS.

They can be picked up from around $200 each.

[Sydneykid]

Toda, HKS, Jun, Tomei.. usual suspects.... They are probably all made in the same factory....

S of S

[rev210]

stick an ogura 4.8kg flywheel in. Will help you in the first few gears particularly.

[Nrage33]

where can i get one of them??

[Sydneykid]

www.uniqueautosports.com.au