Please Help Me With My Very Lazy Gt2860-9's!

[tommis85]

Fingers crossed mate.

Is the tuner going to hit you up with a free touch up tune?

Haha I hope there'll be some sort of discount - but doubt it. These fellas were pretty quick to charge me for everything single little thing they did. Even things that took 15mins were billed out as a full hour of work. Not sure if I really want to go back there to be honest.

Did try it out with entire exhaust dropped and there was a difference so she's booked in tomorrow for new hi-flow cat. I don't think I've ever heard such insane turbine spool before

[sydking]

if people are making 400+ kw on std 34 gtr dumps why are people still getting aftermarket? But yer, De cat that exhaust and retune.

[R.3.2.G.T.R]

if people are making 400+ kw on std 34 gtr dumps why are people still getting aftermarket?

coz they aint dime a dozen

[sydking]

coz they aint dime a dozen

$200 34 gtr dumps vs $800 + HPI ect.

Spose its the same as people spending a couple thou on a shiney jap cooler compared to a GTR one for Under $300.

[tommis85]

That's about right

Well, the new cat is in and I've also straightened out a portion of the exhaust with a dead straight pipe. She feels like they come on a bit sooner....am hoping that I don't regret not going for a set of -7's.

(I'm a sucker for response as you may have guessed)

[SiR_RB]

Regret not going -7? They will be very very little difference between the 2 mate

The problem is somewhere else and not the turbos

[tommis85]

Regret not going -7? They will be very very little difference between the 2 mate

The problem is somewhere else and not the turbos

Yeh well that's just it - I did about 3-4 months of reading and emailing random peeps to see what these buggers will be like.

I guess there's only one way to find out and that's a re-tune now that there's a better cat and everything has been checked for leaks.

[Hadouken]

Maybe get a different tuner.

[tommis85]

Yeh I've been thinking about doing that

[sydking]

Yeh well that's just it - I did about 3-4 months of reading and emailing random peeps to see what these buggers will be like.

I guess there's only one way to find out and that's a re-tune now that there's a better cat and everything has been checked for leaks.

They for sure dont sound like how they should be peforming, Then again i spent months debating -9s and -5s so what do i know haha

[tommis85]

They for sure dont sound like how they should be peforming, Then again i spent months debating -9s and -5s so what do i know haha

That's exactly it. I guess it's all up to the tune now...need to get that fuel in down low to make more....fumes, and consequently more boost and power. Everyone seems to be saying 16 to 18 pounds by 4000rpm.

So what turbos did you end up going for? The -5's are quite a top end turbo right? The have a much bigger A/R than the -9s?

[sydking]

Went -9 because i came to the conclusion that it would be the most usable power on the streets, no track no drags. End of they day they can always he changed. Still its like naming a child haha

[tommis85]

Went -9 because i came to the conclusion that it would be the most usable power on the streets, no track no drags. End of they day they can always he changed. Still its like naming a child haha

Yes it was stupidly hard choosing between the -7 and -9 units! I came very close to buying -7's and only changed to -9's because peeps say that they give a little bit more up top? Like, they don't run out of puff too early etc.

How do yours perform??

[SiR_RB]

Soft

Should of gone t517z 10cm turbz

[tommis85]

Arent they like a float bearing turbo or is that the 8cm ones?

[STATUS]

Arent they like a float bearing turbo or is that the 8cm ones?

nothing wrong with bush or floating bearing turbos.

The preload on the actuators can also make a HUGE difference to response on these things, we dial in 10mm minimum on them before install. Just make sure to balance them equally.

check out this GTR with -5's, it picked up 900rpm.

https://fbcdn-sphoto...445052851_n.jpg

https://www.facebook.com/photo.php?fbid=10150611091641813&set=a.10150265368356813.328814.728171812&type=1

[Don Dada]

Trent, where do you measure that 10mm from? Hole center on the act arm to stud center on the wg flap?

[tommis85]

Well the thing is that I'm already running quite firm actuators that are 15.6psi I think. But I guess the problem lies where the actuators crack. I'll add a little bit more preload to them and see what happens eh?

Maybe that fella in the link who picked up the 900rpm was running very soft actuators?

[sydking]

test them with a air compresser before putting them off and on to check them.

Did that -5 gtr pick up 900rmp on the street or the dyno? Whats its boosting at now ( sorry cant open the link at work)

[STATUS]

Well the thing is that I'm already running quite firm actuators that are 15.6psi I think. But I guess the problem lies where the actuators crack. I'll add a little bit more preload to them and see what happens eh?

Maybe that fella in the link who picked up the 900rpm was running very soft actuators?

the ones on that gtr were 15psi ones aswell.