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STi vs. Stock with upgrades
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Old 24 Dec 2005, 08:41 PM   #1 (permalink)
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STi vs. Stock with upgrades

i was on another forum which i am a member of and the person said the following:

"I know a kid who has a WRX STI Impreza (2006) , he says that it is really a better deal to get an Impreza 2.5i Sedan and add upgrades to it to make it just as fast as the STI. Basically I am asking if it is cheaper to build an STI from a 173 HP Impreza or buy the real thing (the STI) 300HP.

What does everyone else think?"

can i hear ur views on this plz thanks
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Old 24 Dec 2005, 08:58 PM   #2 (permalink)
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I take it this was a USA site where they have 2.5 normal Asp Impreza's

I would say you are far better of with the real thing to start with and converting a Normal Asp to a Turbo is expensive.....

The better the base model to start with the higher tuning you can go.
All the best

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Old 25 Dec 2005, 10:07 AM   #3 (permalink)
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lol yeah, the person was from america

thanks Peter
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Old 29 Sep 2007, 03:29 AM   #4 (permalink)
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turning a 2.5i into anything close to a STI requires at the least new cyl heads to make DOHC, a new engine block to handle the pressures and sufficiently lubricate the moving parts, higher compression pistons to make more power without boost or the rediculously expensive nightmare to make a NA engine Turbo and reliable... and thats just some of the stuff. I dont even want to think about the ECU mods/changes that would be involved. Getting a 2.5i to make 225hp is quite a project and thats just WRX territory. I hate to call people names but whoever suggested that is a moron. Or just very ignorant.
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Old 30 Sep 2007, 11:01 PM   #5 (permalink)
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dunno, but my 2.0 pisses all over an sti,,,,,,,,,,,,,,,,, pmsl

sti would be best bet, not just the engine that will be different between the 2.
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