# Full boost by.. T28 turbos **URL:** \ **Category:** SON240sx Automotive\ **Created:** [June 1, 2009, 7:20pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000 "2009-06-01T19:20:52Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![HosTys\_13](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hostys_13/32/5741_2.png) [@HosTys\_13](https://forums.speedlife.net/u/HosTys_13)\ **Post date:** [June 1, 2009, 7:20pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/1 "2009-06-01T19:20:52Z")
Hey guys I was curious to know what people running stock t28 turbo on your s14 sr20det get full boost by? I’m getting about 5psi as soon as I step on the throttle and 11psi (upped boost) by about 4,800rpm. Is this correct? Or do I have an issue ---
**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\ **Post date:** [June 2, 2009, 7:56am UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/2 "2009-06-02T07:56:06Z")
What gear are you testing in?..You need an SG-Motorsport boost leak tester…for real. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [June 2, 2009, 8:24am UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/3 "2009-06-02T08:24:00Z")
I hope you dont expect boost/power at 1,500 rpm. It’s called lag. It sucks. LoL I hit full boost (14psi) around…3500-3800. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [June 2, 2009, 8:24am UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/4 "2009-06-02T08:24:30Z")
> [@Vid of LS7-swapped GTO](https://forums.speedlife.net/t/vid-of-ls7-swapped-gto/22302/9): > > What gear are you testing in?..You need an SG-Motorsport boost leak tester…for real. Still waiting for one of them! Are they finished and for sale now? ---
**Author:** ![jzavalinsk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jzavalinsk/32/5713_2.png) [@jzavalinsk](https://forums.speedlife.net/u/jzavalinsk)\ **Post date:** [June 2, 2009, 11:03am UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/5 "2009-06-02T11:03:06Z")
full boost by 4800 is about a thousand rpm too late for a stock t28 ---
**Author:** ![240xcsv](https://avatars.discourse-cdn.com/v4/letter/2/bbe5ce/32.png) [@240xcsv](https://forums.speedlife.net/u/240xcsv)\ **Post date:** [June 2, 2009, 11:42am UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/6 "2009-06-02T11:42:09Z")
go v8, just kidding ---
**Author:** ![89\_coupe](https://avatars.discourse-cdn.com/v4/letter/8/e0b2c6/32.png) [@89\_coupe](https://forums.speedlife.net/u/89_coupe)\ **Post date:** [June 2, 2009, 1:26pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/7 "2009-06-02T13:26:54Z")
^pointless. try this [http://www.youtube.com/watch?v=atretf9u-Mc](http://www.youtube.com/watch?v=atretf9u-Mc) ---
**Author:** ![Jedi\_Car\_Fan](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@Jedi\_Car\_Fan](https://forums.speedlife.net/u/Jedi_Car_Fan)\ **Post date:** [June 6, 2009, 4:31pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/8 "2009-06-06T16:31:07Z")
I’m running a GTiR T28 which is a bit bigger then the S14/S15 ones. I’m running 9.5psi and I see full boost by 3200rpm. Depending upon the setup (Manifold, Extension, Downpipe, Exhaust) Etc… and even other factors can all alter how quickly the Turbo can spool. So if you have a complete 3’’ Turbo back setup and you don’t see 11psi until 4800rpm you defiantly have problems. But if you have a small 1.5’’-2’’ setup then I wouldn’t doubt it. ---
**Author:** ![ronnie416](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ronnie416/32/5480_2.png) [@ronnie416](https://forums.speedlife.net/u/ronnie416)\ **Post date:** [June 6, 2009, 7:27pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/9 "2009-06-06T19:27:14Z")
Dude. That car hit full boost far before 4800RPM in second and third as long as you were loaded. If you tromp on the pedal in 3rd gear at 3000 RPM you won`t see shit till higher up. It`s a trubo car, there is lag, you just gotta drive it in the right gear if you want max accel. You can`t tell me that if you`re in 2nd doing about 50 or 60 k and tromp on it it takes that long to get to full boost. ---
**Author:** ![87s15lt1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/87s15lt1/32/5706_2.png) [@87s15lt1](https://forums.speedlife.net/u/87s15lt1)\ **Post date:** [June 6, 2009, 7:32pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/10 "2009-06-06T19:32:16Z")
Correction, I see full boost (any where from 10 - 14 psi) at 3050rpm ---
**Author:** ![HosTys\_13](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/hostys_13/32/5741_2.png) [@HosTys\_13](https://forums.speedlife.net/u/HosTys_13)\ **Post date:** [June 7, 2009, 1:03pm UTC](https://forums.speedlife.net/t/full-boost-by-t28-turbos/125000/11 "2009-06-07T13:03:52Z")
> [@Official NYSPEED Wii Friend codes](https://forums.speedlife.net/t/official-nyspeed-wii-friend-codes/21695/57): > > Dude. That car hit full boost far before 4800RPM in second and third as long as you were loaded. > > If you tromp on the pedal in 3rd gear at 3000 RPM you won`t see shit till higher up. > > It`s a trubo car, there is lag, you just gotta drive it in the right gear if you want max accel. > > You can`t tell me that if you`re in 2nd doing about 50 or 60 k and tromp on it it takes that long to get to full boost. of course its got lag, the turbo is small it should spool way quicker, there might be a wastegate malfunction anyways