Garrett Gt2860 -9s

[N1GTR]

Dyno tune will be a while still when I'm ready to adjust the cam gears.Until then its road tuned

N1GTR.. Technically the only thing new about this is the actuators, and I'm sure if you purchaced -9 from gcg etc. they would put on the same 8.8psi actuator like what I got. Otherwise, same -1 / -9 / Gtss unit.

I think response can be tweaked further with the tune and also with boost control as there is no creep and very minimal spike(1psi) as is right now, so definately some gain to be have there, even if minimal.....and then there are cam gears

Have only been driving it a few days, but it does pull a touch harder on 13psi, But so far I'm satisfied that I have turbs capable of 300rwkw with stock like response.

Aaaaaah my bad!

Here's what I thought you meant;

http://www.turbobygarrett.com/turbobygarrett/products/turbochargers.html#medium

GT2854R - 471171-9

GT2859R - 707160-9

GT2859R - 780371-1

GT2860R - 707160-5

GT2860R - 707160-7

GT2860R - 739548-9

GT2860RS - 739548-1

GT2860RS - 739548-5

GT2871R - 472560-15

GT2871R - 743347-1

GT2871R - 743347-3

GT2871R - 707160-10

GT2871R - 780371-2

GT2871R - 743347-2

GT2871R - 743347-4

GT2871R - 771847-1

GT2876R - 705330-1

GT2876R - 705330-2

[GTRsean]

This is the last dyno tune I had, -9's, nismo pump, 555cc injectors, nismo AFM's, cam gears, stock engine.

Figures in all wheel killerwasps.

Since then I have fitted a different boost controller and the wastgates are now set to open at 16PSI with controller off.

Needs another tune to set boost controller and get rid of the drop in boost pressure. 22PSI tune to follow.

I'll let you guys know....

[Don Dada]

Aaaaaah my bad!

Here's what I thought you meant;

http://www.turbobyga...ers.html#medium

GT2854R - 471171-9

GT2859R - 707160-9....Gtss

GT2859R - 780371-1....Gtss with act

GT2860R - 707160-5.....2530

GT2860R - 707160-7....R34 N1

GT2860R - 739548-9

GT2860RS - 739548-1

GT2860RS - 739548-5

GT2871R - 472560-15

GT2871R - 743347-1

GT2871R - 743347-3

GT2871R - 707160-10....Gtrs

GT2871R - 780371-2....Gtrs with act

GT2871R - 743347-2

GT2871R - 743347-4

GT2871R - 771847-1

GT2876R - 705330-1

GT2876R - 705330-2

[dori34]

how much did you pay for the -1s don dada?

GTRsean, what RPM does it hit full boost?

[Don Dada]

Not in Aus, but converted to Aud it came up to $2100.

Sean ...Is it possible to get rpm with your next tune?

[GTRsean]

It's all on (full boost) like donkey kong at 4000RPM, past 8000 if you want to push, so easily a nice 4000RPM power band.

I'll see if I can get RPM based one next time.

[sinistaGTR]

Getting mine tuned on the 27 with the following mods:

HKS GTSS

750cc inj

power fc d jetro

nismo fuel pump

Apexi pods

will post up results as soon as its done

[Sloane]

-5's FTW!!!

[GTRsean]

Nice work Dan!! Loooking forward to your results.

I'm thinking my injectors will limit mine as they are near the limit...damn it!!

[Don Dada]

^^^What duty are you seeing now with the 555cc and at what afr?....I'm running nismo 555 as well

[vspecIInur]

Go ID 1000's. Best injectors to tune comparing to stock injectors. The price you pay for nismo one's you can get these

[R31Nismoid]

555s should be enough for -9s.

If not a tiny bump in rail pressure will fix it easily.

I was running -9s with factory injectors @ 330rkkw - reasonable bump in rail pressure

[GTRsean]

I guess they didn't say anything about injector duty.

I was seeing roughly 90% on a cold night with 22psi peak in the midrange through to 17psi or so at the top end. Rich enough to see black out the back on full boost

Stock fuel reg too....

Should be okay, guess I'll find out.

[DVS JEZ]

Yep CRD love there tunes safe/rich.

[Piggaz]

Ash, you guys seem to be always fiddling with rail pressure. I don't understand. Why not just get the correct sized injectors in the first place?

[R31Nismoid]

Nah it was just my car Paul

That was 6 months ago though.

I put injectors/AFM/-5s/retune all in at the same time.

[Piggaz]

Ahh huh! I'm with you now!

[Don Dada]

Well since there is NO info on this here I just thought i'd put this up and update as I go along.

The comparision below is results for the -1 turbo which is the -9 that comes with a 8.8psi actuator from Garrett, compared to stock R33 Gtr turbos.

The top window is the -1/-9 which reaches the same level of boost(13.3psi) about 200-300rpm later than the stocks, and the car drives basically the same as before.

The ONLY thing changed was the boost level was raised only one notch on the controller (profecb2) to get the same level for comparision....start/gain etc was left the same and the pfc tune was untouched.

My boost control kit reads 1psi low for some reason, hence 13.3psi

Ignore the scale on the bottom as this would be different due to the length(secs) of each log

Well with two turns in on the actuators I was able to get it down to stock like response, well on paper at least....To me it feels even better than stock coming into boost

Top -1/-9, bottom is stock

Is boost creep the only thing to look for with too much preload? I want to shorten them some more

[GTR_JOEY]

Good stuff, smithy85 will be post up his results soon as he is doing stock vs -9s as well

[smithy85]

^ true that, on the dyno at JEM at the moment!