Geez, stock psi is 14.6 on WRX turbo

actually low 14s. but its really de tuned from the factory. full exhaust and intake will free up a lot of power in those cars.
 
not necessarily....you need to take into account the fact that it does take a fair amount of parasitic loss to the AWD. from what i understand they tend to dyno about 40 HP less then the actual rating of the crank (227 HP). you can't use boost as a total determining factor for 1/4 mile times.
 
yeah, i figured that. is that 14.6 really safe though? that means they can use a boost controller and get alot more out of it, correct?
 
yeah 14.6 is correct...many people that use a MBC on these go up to 17 psi (which is what the jdm WRX runs.)
 
if you're talking about a stock, nonSTI, WRX, they run .5bar from the factory. i've driven my friends and watched the gauge stop dead on .5bar.

btw- 1 bar=14.7psi
 
mx3ownzj00 said:
if you're talking about a stock, nonSTI, WRX, they run .5bar from the factory. i've driven my friends and watched the gauge stop dead on .5bar.

btw- 1 bar=14.7psi

Um...no...actually, for a WRX, the boost is dependent on rpm and maxes at ~14psi :D
 
your friend needs a new boost guage:

"The biggest changes center around making more top-end power in the Japanese engine than we get in the U.S. Variable valve timing on the intake valves certainly helps in Japanese EJ20s, as does a larger compressor wheel on the turbo, which is controlled by the ECU to make slightly more than 17 psi maximum boost. American WRXs will fill the intake manifold with a maximum of 14.2 psi, according to Subaru. " -taken from sport compact car. check it for yourself bud: 2002 WRX
 
thanks option.....it all depends on how high the rpms are...turbos spool according to that....
 
pro5utah said:
thanks option.....it all depends on how high the rpms are...turbos spool according to that....

i understand the workings of a turbo. you're not gonna be creating higher and higher boost pressures all the way up to redline though. you fail to mention that once the turbo is fully spool-ed, its continues at a constant boost pressure. i'm sure you know this, but what you've said leaves some open ends.

maybe it was the 1bar hash on the boost gauge, the stock one is small. no sense in having a pissing contest over what the correct psi is, as no one pulled it from their head.
 
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it most certainly does deserve to be in the msp topic. its turbo related and teaches us how the enemy works
 
Jecky!

twiztedjeckel said:
cause this is a good topic for the Mazdaspeed section

Yes that's DA Jecky will all know and adore!
I thought "The Enemy" was the hideous and dreaded "Turd."
Subis are our little Squinty-Eyed Japenese Brutha's.:D
 
INGREXCO said:
it most certainly does deserve to be in the msp topic. its turbo related and teaches us how the enemy works

so with that said ever car that has a turbo deserves its own thread in the MSP section of the forum? cause last time i checked the MP3's had their own section of the forum and the turbo'd MP3's that are fast than the Mazdaspeed's weren't talked about in this section.

i think i'm going to start a thread now about the Twin Turbo V8 Ferrari F40. cause its the enemy too:rolleyes:
 
INGREXCO said:
it most certainly does deserve to be in the msp topic. its turbo related and teaches us how the enemy works
If you consider a WRX "the enemy", you might as well quit the tuning game :).. No offense to those who like them, but they are a joke. I used to want one pretty badly until other friends of mine got them, broke them and sold them. I have seen people put $3000 into them and hit the 240 WHP mark.. Umm- money well spent there guys :).
Joe
 
In regards to the WRX vs. MSP, you guys also have to remember the following:

1) WRX's curb weight is signifcantly more then a MSP
2) Driving 4 wheels requires more power then 2
3) The more the distance between engine and drive wheels, the more the power loss (frictional etc).
4) The WRX is not built for DRAG. It's built for Rally!
5) The WRX (stock) has 3 cat converters. One before the turbo, and two after the turbo.
 
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