How's your S256???? - SRT Forums

pantherballhp · 10-24-2009, 09:32 PM

Well i'm thinking about getting the BW S256 kit from AGP and i'd like to get some opinions on this turbo. and some dyno numbers. i don't feel like scrolling through that whole other thread of stuff that's not dyno numbers.

Please no arguments on here about spool time and things like that. i know it takes some rpms to spool it. i'd rather see some times and numbers.

Big thanks

turbojonsrt4 · 10-25-2009, 12:01 AM

Quote: Originally Posted by pantherballhp

Well i'm thinking about getting the BW S256 kit from AGP and i'd like to get some opinions on this turbo. and some dyno numbers. i don't feel like scrolling through that whole other thread of stuff that's not dyno numbers.

Please no arguments on here about spool time and things like that. i know it takes some rpms to spool it. i'd rather see some times and numbers.

Big thanks

Numbers you see on here won't compare much to what you're gonna get on Aaron's dyno. Stock motor and on race gas and 28-30psi, go ahead and suspect to see no more than 420-430 on that dyno.

srt4101 · 10-25-2009, 12:36 AM

Decent turbo I went 11.8@119 on 91 pump no meth or anything. I think it could have went 11.6 ish on cali 91 pump but my tranny had about 80k on it and just refused to shift the way I wanted. On race gas I made an easy 450sae, 466std and 485 uncorrected all at sea level. I however would not buy it again as it cost more then a 50 trim and on you average bolt on big turbo car will perform no better. Just my 2 cents.

lyncoo · 10-25-2009, 12:38 AM

i like this turbo

Alligatorman · 10-25-2009, 03:27 AM

Went from a 50 trim 47lbs/min to this and I can run a lot more boost and timing compared to the 50 trim. The exhaust is so much more free-flowing which translates to less backpressure, lower EGTs and reduced combustion temps. All good things when fighting detonation and pump gas. This turbo has a large turbine wheel size so that is a reason for the later spool but I still get 20psi at 3600rpm on a 2700 lbs 240sx.

I am running 20psi on 94 octane (no meth) and it is pretty insane for the street...blowin off my 255 T1R tires on the back of a 240sx.

turbojonsrt4 · 10-25-2009, 08:12 AM

Quote: Originally Posted by Alligatorman

Went from a 50 trim 47lbs/min to this and I can run a lot more boost and timing compared to the 50 trim. The exhaust is so much more free-flowing which translates to less backpressure, lower EGTs and reduced combustion temps. All good things when fighting detonation and pump gas. This turbo has a large turbine wheel size so that is a reason for the later spool but I still get 20psi at 3600rpm on a 2700 lbs 240sx.

I am running 20psi on 94 octane (no meth) and it is pretty insane for the street...blowin off my 255 T1R tires on the back of a 240sx.

Hmm, I get 30 psi on my journal bearing Precision 6057 at around 3700-3800 and my tune still isn't that great. That's with a turbo capable of 700whp.

btree211 · 10-25-2009, 03:53 PM

torque seems a little low on these turbos, but im sure you can hit 10's with it, really a high boost turbo, but like jon said those Precisions are beast!!

lyncoo · 10-25-2009, 05:07 PM

Quote: Originally Posted by btree211

torque seems a little low on these turbos, but im sure you can hit 10's with it, really a high boost turbo, but like jon said those Precisions are beast!!

who said that. Precision 6057 tq seems low.

btree211 · 10-25-2009, 05:44 PM

no i meant the s256 seems to make pretty low torque... the precision line is a whole nother story lol

turbojonsrt4 · 10-25-2009, 06:14 PM

Quote: Originally Posted by lyncoo

who said that. Precision 6057 tq seems low.

I spin ALL of 3rd gear. I'm fine not having any more tq than I do

BUT most people on here aren't smart enough to understand my numbers on that pull.

lyncoo · 10-25-2009, 06:15 PM

Quote: Originally Posted by turbojonsrt4

I spin ALL of 3rd gear. I'm fine not having any more tq than I do

BUT most people on here aren't smart enough to understand my numbers on that pull.

i was joking

btree211 · 10-25-2009, 06:18 PM

my b

Alligatorman · 10-26-2009, 12:56 AM

I like me some 6057...jon get ur shit on a dyno again and prove that turbos worthiness!

lblackneon · 10-26-2009, 01:15 AM

Quote: Originally Posted by turbojonsrt4

Hmm, I get 30 psi on my journal bearing Precision 6057 at around 3700-3800 and my tune still isn't that great. That's with a turbo capable of 700whp.

With that spool and power capability, that makes me think about ditching this T04Z.

Alligatorman · 10-26-2009, 12:31 PM

Quote: Originally Posted by lblackneon

With that spool and power capability, that makes me think about ditching this T04Z.

I haven't seen any evidence that it will make close to 700whp...maybe on a 2.3L EVO revving to 9000rpm.

It may do 600whp on a fully built SRT but I think turbojonsrt4 can be the one to show it's potential!