Garrett Medium Frame Gtx Turbos

[bigmikespec]

4 inch all the way buddy!!!!!

[ido09s]

im will be talking to a few tuners im in sydney so it will be out of JEM/Powertune/unigroup still probly 4-5months off from any dyno time

quick question guys would a 3 1/2 inch dump to 4inch cat back be over kill for my set up? OR should i just stick to 3 1/2 inch the whole way?

I use Unigroup for all my tuning needs. But, as for the dump pipe, do some real research and find out what suits best. Everyone here will say 4 inch as it sounds good but it might just be to big.

[ShiftyTys]

Got it back. Trent said he'll say a few words for me

[BMYHOE]

ATP housing?

yeah kyle from 6boost organised it for me

[wolverine]

Got it back. Trent said he'll say a few words for me

Hopefully Trent will call us all a bunch of clueless keyboard warriors.

[ARTZ]

Hopefully Trent will call us all a bunch of clueless keyboard warriors.

haha..we probably deserve it..

(speaking for myself anyway)

[ShiftyTys]

haha..we probably deserve it..

(speaking for myself anyway)

Haha. People on here do tend to always be "right"

He's very insightful actually.

[BMYHOE]

4 inch all the way buddy!!!!!

i was going to do this but after seeing/measuring the ATP exhaust housing i have the outlet is around 2 1/2 inch

heres some pics -

[ido09s]

So is this Trent a member on here?

has it got more in it?

[Rolls]

So is this Trent a member on here?

has it got more in it?

he is STATUS

[wolverine]

i was going to do this but after seeing/measuring the ATP exhaust housing i have the outlet is around 2 1/2 inch

The exhaust gases should be expanding on exit.

[bigmikespec]

Yes but you need to make sure your transition from 2.5" to 4" is done right I think a 12-15 degree gradient is ok (from memory). There is no such thing as an exhaust that is too big on a turbocharged engine.

[ShiftyTys]

So is this Trent a member on here?

has it got more in it?

Same power for slightly less boost. (As im intentiinaly limiting it) This boost chart show Max boost like 4k. He recons more preload will / better tune will knock a bit off that. Made 293 rwkw.

[scotty nm35]

After a quick road tune, the GTX3071 is living up to its promises. Transient response is crazy, it spools to 20psi in what seems like one second. Im going for a run on the dyno on Sunday at this stage so I will post it up as soon as I have the graph.

Install thread: http://www.skylinesaustralia.com/forums/topic/368795-gtx3071-install/

[Simon-S14]

mine going for a back to back comparison between the GT3076 and GTX version... nothing else has been changed on it. same rear housing size. will be interesting to see what it does on the same dyno. im keen to see boost/spool differences and torque difference. thursday i'll have results

[JonnoHR31]

yeah kyle from 6boost organised it for me

let us know how you go with fitment on a 6boost manifold. i have the same housing but to suit a gt30 on a hks cast manifold and fitment is mission impossible in every regard. for example the edge of the t4 flange sits so close to the comp housing that i've had to leave one of the comp housing bolts out as it fouls. have fun with the lines....

[STATUS]

Yeh tonight. Interesting to see what he says.

All very valid unbiased thoughts. Hopefully I will get my answer

its a tough path to tread, as its always easier to look over something after its done, im sure my work could be knit picked just as much and i dont know how much time was invested in the setup and tune..

There would be some good gains in the gate preload, i would nearly double it and that should see around 20rwkw @ 4000rpm alone, increasing the map resolution from 120kpa to 180-220kpa will stop it "flat-lining" give more control in the fuelling map. And finally setting the Vct.

I would advise not to move the cams gears from their current "0" setting until the vct is setup and the rest of the suggestions tried first.

Im sure given some more time they will have it sorted 100% they have a great reputation.

This turbo should produce the numbers, its definitely got loads more mid in it.

[joeyjoejoejuniorshabadoo]

mine going for a back to back comparison between the GT3076 and GTX version... nothing else has been changed on it. same rear housing size. will be interesting to see what it does on the same dyno. im keen to see boost/spool differences and torque difference. thursday i'll have results

this

[SimonR32]

mine going for a back to back comparison between the GT3076 and GTX version... nothing else has been changed on it. same rear housing size. will be interesting to see what it does on the same dyno. im keen to see boost/spool differences and torque difference. thursday i'll have results

Very keen to see your results

[TiTAN]

yeah its a RB30, 26 head forgot to mention that - thought we were in the RB30 section

im will be talking to a few tuners im in sydney so it will be out of JEM/Powertune/unigroup still probly 4-5months off from any dyno time

quick question guys would a 3 1/2 inch dump to 4inch cat back be over kill for my set up? OR should i just stick to 3 1/2 inch the whole way?

that combo is going to be capable of 400+kw a 4" system from the turbo back is the only option you should be considering.