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what's a safe boost pressure
Posted: February 25th, 2010, 1:02 am
by rebel sounds
can you guys help or shed some light as to what boost pressure is safe to run on a '06 sti twin scroll engine
Posted: February 25th, 2010, 4:12 am
by Samiir_Tuner
18-20psi with a good tune
Re: what's a safe boost pressure
Posted: February 25th, 2010, 9:44 pm
by AWD Motorsports
rebel sounds wrote:can you guys help or shed some light as to what boost pressure is safe to run on a '06 sti twin scroll engine
alot of other factors involved boss... any mods on ur car?
Posted: February 27th, 2010, 5:47 pm
by Alpha_2nr
First off, it depends on what turbo you're running. Bigger than stock turbo, same psi = more air flow = just as damaging if not tuned right.
Too high boost causes the turbo to lose efficiency, then suffer a loss in air flow, and also act like a fancy air heater, making your car more prone to knock.
Posted: February 27th, 2010, 10:48 pm
by A172
not to hijack
but whaz de most men running on the wrx td04 safely as everyday boost?

Posted: February 27th, 2010, 11:14 pm
by Race Champ
word up hey the safest way to go is from 10-15 speaking from personal mishaps i melted my pistons doing 18-20
Posted: February 28th, 2010, 8:29 am
by Alpha_2nr
A172 wrote:not to hijack
but whaz de most men running on the wrx td04 safely as everyday boost?

Well, hmm....the power you're aiming to get, and the boost to get it at.....depends on whether you're running a 13G or 19T wheel, and the TD04L/HL etc etc. W.r.t to the Subys, the everyday boost depends on the map the person's running....tuned or not.
If it's any help, back when my car was shamefully stock, I logged 200 whp (well, 199.99) at 13.0 psi boost (
with 3 wonderous cat converters (
1 in UPpipe/2 in the DownPipe)
and the stock 2.25" exhaust)
word up hey the safest way to go is from 10-15 speaking from personal mishaps i melted my pistons doing 18-20
Stock boost for the JDM STi is 18 psi.

Posted: February 28th, 2010, 12:21 pm
by A172
it's the td04l-13g
made 173whp at 12psi
now I'm thinking of running 14psi low boost and 16 as high
just need to know if the turbo could take that on a day to day basis

Posted: February 28th, 2010, 6:19 pm
by Alpha_2nr
^^Don't see why not.
Folks both locally and abroad (judging from the US forums) have run about 16 psi. I'm not sure it'll make such a ginormous difference......could be wrong though

Posted: February 28th, 2010, 7:57 pm
by A172
no the reason I asked is because I hearing some men saying the most it cud run everyday safely is 14psi.....den some saying 16-17.....then others claiming 20
kinda like ah runaround nah
issa 1.3L.....hadda run as much boost as safely possible
thx tho
Posted: February 28th, 2010, 11:49 pm
by AWD Motorsports
All this info is great but it really depends on ur tune..... 16psi on a stock wrx is not bad as a daily driver eh Knight? lol....
Posted: March 1st, 2010, 9:54 am
by Alpha_2nr
^^Lies......LIES!!!!!!

Posted: March 1st, 2010, 1:27 pm
by drinker41
http://www.scoobytuner.com/tuning/?tSfID1=4&tuningID=43 this website has info on most of the stock turbos that subaru offers
Posted: March 1st, 2010, 6:36 pm
by AWD Motorsports