JDM Impreza STI versus USDM IMPREZA STI
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JDM Impreza STI versus USDM IMPREZA STI
hi all,
just wanted some engine info on JDM STI versus USDM STI. the size is different. what else? which one is more reliable, stronger?
thanks.
just wanted some engine info on JDM STI versus USDM STI. the size is different. what else? which one is more reliable, stronger?
thanks.
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actually .. it's not vtec ;. it's subaru's version of vtec. th avcs (active valve controle system) and it's better than vtec in that it's shifting the cam shaft all the time compared to the vtec which only shifts at high rpms.
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From: You're doing it wrong!
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Originally Posted by XkrazyAsianX
actually .. it's not vtec ;. it's subaru's version of vtec. th avcs (active valve controle system) and it's better than vtec in that it's shifting the cam shaft all the time compared to the vtec which only shifts at high rpms.
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From: Cali
Car Info: WRX STi 2004
Originally Posted by latinplaya64
usdm motor is a 2.5 vrs the jdm 2.0w/ verable timing electronicaly controlled (vtec)motor. Usdm redline 7000rpm vrs jdm 8200prm. email for more details
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From: UCIrvine
Car Info: '05 Crystal Grey Metallic WRX Sport Wagon
In terms of horsepower, how do they get more out of the 2.0JDM than the 2.5USDM? Or don't they? ...bigger turbo? ...higher compression?
Originally Posted by MVWRX
In terms of horsepower, how do they get more out of the 2.0JDM than the 2.5USDM? Or don't they? ...bigger turbo? ...higher compression?
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From: SBAIC-South BayArea Impreza Club-Campbell, CA-Thur
Car Info: 2003 PSM STi
Originally Posted by Onizuka
JDM gas & forged internals = cool, my tranny and engine won't break! 
-GDO
-GDO
also, Japan doesnt have SMOG laws to sidestep, if we didnt have to worry about smog, there would be a whole lot of 300+ hp 2.0L subys out there.
-T
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Car Info: 2002 Subaru Impreza WRX
Originally Posted by GotBoost?
errrr.....dude, your car is a USDM not a JDM......
also, Japan doesnt have SMOG laws to sidestep, if we didnt have to worry about smog, there would be a whole lot of 300+ hp 2.0L subys out there.
-T
also, Japan doesnt have SMOG laws to sidestep, if we didnt have to worry about smog, there would be a whole lot of 300+ hp 2.0L subys out there.
-T
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From: Robbin' the Hood (Claycord)
Car Info: (RIP) '04 STi Silver
Originally Posted by latinplaya64
by the higher redlimiter does creat more hp but loses torque which you really want more then hp
For the track (circuit) higher RPM power is better, and for drag racing, lower RPM Torque is better.
For an example of a street car meant for the track, do a search on the BMW E30 M3.
With our crap gas, the USDM STi needed another half liter, even though EVOs don't...
