# Will I make it over the 300 hp hump with the GTiR T28?

**URL:** <https://forums.speedlife.net/t/will-i-make-it-over-the-300-hp-hump-with-the-gtir-t28/124606>\
**Category:** SON240sx Automotive\
**Created:** [May 19, 2009, 2:08pm UTC](https://forums.speedlife.net/t/will-i-make-it-over-the-300-hp-hump-with-the-gtir-t28/124606 "2009-05-19T14:08:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![smp-16](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@smp-16](https://forums.speedlife.net/u/smp-16)\
**Post date:** [May 19, 2009, 2:08pm UTC](https://forums.speedlife.net/t/will-i-make-it-over-the-300-hp-hump-with-the-gtir-t28/124606/1 "2009-05-19T14:08:18Z")

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Ive searched every forum for dyno sheets and numbers/ set ups for a GTiR T28 setup but to no avail. I know it is similar to the S15 T28,that it flows a little more up top and spools slower (non-ball bearing) but no one has numbers specifically for this version of T28.

Also at what psi does it stop becoming effiecient? 16 psi?

I will be running all of this on a Redtop:

Freshly rebuilt GTiR T28  
550cc injectors  
Walbro 255  
3" turbo back exhaust (elbow,DP,exhaust)  
FMIC  
HKS SSQV  
Z32 MAFS  
Brand of wideband and EBC arent known right yet

And for engine management it will more than likely be a rom tune by JWT or Enthalpy.

Has anyone had any experience with this setup?