# Garrett GT series or SR T28???? **URL:** \ **Category:** SON240sx Automotive\ **Created:** [June 29, 2007, 2:29am UTC](https://forums.speedlife.net/t/garrett-gt-series-or-sr-t28/107250 "2007-06-29T02:29:22Z")\ **Posts on this page:** 1\ **Showing post:** 9
**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\ **Post date:** [June 29, 2007, 2:59pm UTC](https://forums.speedlife.net/t/garrett-gt-series-or-sr-t28/107250/9 "2007-06-29T14:59:09Z")
> [@FS: 94 Camaro Lt1](https://forums.speedlife.net/t/fs-94-camaro-lt1/13092/3): > > GTiR T28 from a Pulsar… biggest turbo nissan used on any factory engine and is bigger then the S14/S15 T28 BUT its not BB which means it’ll spool say 500rpm slower BUT it would cost a 3rd the money to rebuild… > > I run one myself but @ 8.5psi I hit 98.7% injector duty on 370’s and the MAFS is @ 4.93V… so you dont exactly have to upgrade either right away unless you play on going past 9psi right away. > > They also have the exact same hotside as a 2871 and can hit 300whp depending on mods… dude on [240sxforums.com](http://240sxforums.com) makes right in around 320whp but has every supporting mod possible + runs it @ 22psi I believe. Hey Jeff, is that the same turbo that Benson is running on his car as well? How fast do you build 8.5 psi in that turbo? And no, the s15 turbo is way different than the gt28rs. The inlet is different (but you might be able to get it made like a stock t25/t28 inlet). The S15 turbo, like people have said, is good to about 300whp with supporting mods. The GT28RS could hit around 320+ whp if you have the supporting mods as well. It would definitely help if you had cams though. 256/256 or 256/264 would be good for either one of those turbos. --- _[View the full topic](https://forums.speedlife.net/t/garrett-gt-series-or-sr-t28/107250)._