320-350 Rwkw From My Gtr,do I Have To Change Dumps

[black sky]

Hi people

like the title says do i need to change the dumps to get to that power and also what kind of gains are to be had by changing them??? how much does it bring lag down by 200rpm??? any help would be great my car has the following mods( see bellow). I am upgrading injectors and cam gears with this as well just wanted to know if i really need the dumps.

Now the second part of my question, in the below dyno sheet is this how r34 N1 turbo's are supposed to respond i do have the bigger N1's turbos C106/GT25 A/R 0.60/0.64. but it just doesn't seem like it's that responsive compared to other people's dyno sheets with what i would assume are bigger turbo's

the mods on the car are

ACL Forged Pistons

ACL Piston Rings

ACL Big End Bearings

ACL Main Bearings

Ported and polished head

Stock polished crank and rods

Bored and honed Block

N1 Oil pump

N1 Water pump

Tomei Oil Gallery restrictor

Gates timing belt

New engine gaskets all round

New Thermostat

New NGK spark plugs

R34 GTR injectors

R34N1 turbos C106/GT25 A/R 0.60/0.64

New Rod bolts, welsh plugs

Fresh paint on rocker covers

3" Trust Front pipe and Power Extreme II Cat back Exhaust

3" Metal cat

Twin Apexi Pods

Apexi Power FC & Hand Controller

Greddy Profec B Spec II boost controller

Nismo fuel pump

That is 247@ all 4 wheels on 14psi.

[SLIPPERY]

cmon champ

have a look at least half the way down this page.

Weve been covering the subject of changing dumps for 350rwkw for the last couple of weeks and theres a thread there with 3 pages

Edited May 16, 2007 by SLIPPERY

[R31Nismoid]

Black sky, ive asked you to consult the search button before havent it?

http://www.skylinesaustralia.com/forums/in...howtopic=167964

This is not even 2 weeks old.

Please have a good read of the thread.