Anyone in here running the GT28 turbo from a stock S-15 engine??

If so feedback would be appreciated.
I'm trying to decide on a trubo for my SR. I do not want to top mount.

ive been looking into the new garret the gt2871r i belive it is check out enjuku

wow, an $1100 turbo, holy pants

Anyone in here running the GT28 turbo from a stock S-15 engine??

If so feedback would be appreciated.
I'm trying to decide on a trubo for my SR. I do not want to top mount.


Average HP Number - 280ish WHP
Cams, Tune, 1.2Bar - 320ish WHP

Id do everything else first with the T25 (Standalone, Manifolds, Injectors) to get it above the 250WHP mark and then get a Spec-R T28 and Tomei 256s... as a matter of fact... thats exactly what im going to do once I get the rest of the car perfect.

T28 - 7-800$ Stock S15 Ball Bearing
GT28 - Dunno much about it... its a T25 Turbine with a big compressor I think
GT28RS - The Bandwagon Turbo. Sport Compact has it. Same max Hp as Stock S15

2 things.

1 i thought the s15 jsut had a t28 not gt28

2 also i thought the gt28rs maxed at like 350hp+

yea you def quoted some miss info on the Disco Patatoe (gt28rs) very good turbo...goes to around 350hp...not much higher than that though...The S-15 spec-R T28DD is topped around 320whp....GT28RS is a way better buy...and if you have another $300 to spare...take no short cuts and get the gt2871r...excellent turbo...quick spool up and high WHP #'s...good to 400hp...depending on the A/R you decide to go with...

yea you def quoted some miss info on the Disco Patatoe (gt28rs) very good turbo...goes to around 350hp...not much higher than that though

Last I Checked SCC was shifting to a bigger turbo because the RS was maxed out at around 280WHP... I dont really follow what the GTRS can do though.


The S-15 spec-R T28DD is topped around 320whp....

If you have a T25 with bolt ons (Exhaust,FMIC,Intake,Fuel Mods) The S15 BB will make around 280WHP. once you add Cams, ECU, and Manifolds the T28 will make around 320 at 1.2bar

If you have a T25 with bolt ons (Exhaust,FMIC,Intake,Fuel Mods) The S15 BB will make around 280WHP. once you add Cams, ECU, and Manifolds the T28 will make around 320 at 1.2bar

I personally think that if you going to be doing all that...you might as well get something alittle better than just a stock turbo...becuase soon enough you'll have to reflash the ECU becuase your gonna want another turbo anyways...and why would you boost a stock turbo to 1.2 bar anyways...thats what 15psi...anywho...i just like the sound of a gt2871r turbo anywho...i guess im impartial though. and btw its never good to max a turbo...if your going for a 320 range...go for something that maxes at 320hp...going for 350...go for 400..ect ect...just better for the turbo...unless you want to replace it often