Stock STi turbo
Registered User
iTrader: (14)
Joined: Nov 2001
Posts: 14,221
From: Peoples Republik of Kalifornia
Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
Originally Posted by _sti_05
how many pounds of boost can the stock turbo on an sti can handle
whats the max.. psi
just wondering...
whats the max.. psi
just wondering...
About 18 psi seems to be the max psi most guys are running on 91....but keep in mind, thats peak boost, which tapers down to 14-15#'s by the time redline comes around.
The turbo seems to run out of breath in the 360-370hp crankshaft range on 91...closer to 390-400hp on race gas...thats with a good tune and supporting mods.
12.4-12.5 1/4mile seems to be the limit on the vf39 on a STI.
The turbo seems to run out of breath in the 360-370hp crankshaft range on 91...closer to 390-400hp on race gas...thats with a good tune and supporting mods.
12.4-12.5 1/4mile seems to be the limit on the vf39 on a STI.
Originally Posted by Egan
I'm runnign about 17.5 psi. I'm not sure at what point the efficiency starts to drop off, but I would imagine it's not much more than 18psi.
Ever race??
BanHammer™
iTrader: (8)
Joined: May 2000
Posts: 47,596
From: Wagonmafia Propaganda Lieutenant
Car Info: 2014 Forester XT
Originally Posted by MARKSTI
From what i recall...u seem to have one of the stronger STIs with just Exhuast/Tune, it would be nice to see some 1/4 times...
Ever race??
Ever race??
:P
Registered User
Joined: Oct 2004
Posts: 279
From: Brownsville, Texas
Car Info: 2005 STi
Originally Posted by Egan
I'm runnign about 17.5 psi. I'm not sure at what point the efficiency starts to drop off, but I would imagine it's not much more than 18psi.
what mods do u have that has u running 17.5 psi, if u dont mind asking
Originally Posted by Scott@S-S
mike is too fancy for a drag strip.. he only races on the track
:P
:P
i guess i'm sorta retarded so that helps with my dragstrip adventures.....
Last edited by MARKSTI; Jan 12, 2005 at 11:58 AM.
Registered User
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Joined: Nov 2001
Posts: 14,221
From: Peoples Republik of Kalifornia
Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
Yep, Vishnu Stage 1 which is 3" TBE w/ hiflow cat and ECUTek reflash.
I will probably take the STi out to Sacramento raceway for the Wednesday night drags (when they open back up) now that I work right down the street.
I will probably take the STi out to Sacramento raceway for the Wednesday night drags (when they open back up) now that I work right down the street.
Registered User
iTrader: (14)
Joined: Nov 2001
Posts: 14,221
From: Peoples Republik of Kalifornia
Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
Originally Posted by Scott@S-S
mike is too fancy for a drag strip.. he only races on the track
:P
:P
Originally Posted by Egan
I will probably take the STi out to Sacramento raceway for the Wednesday night drags (when they open back up) now that I work right down the street.
Maybe that will be around the time u race...as Sacramento raceway opens up in a few weeks.
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