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580whp sti or a 618whp evo 9?

4663 Views 48 Replies 27 Participants Last post by  manitou
hello, this is my first post on iwsti and i have the option to buy a 580awhp 2004 sti or a 2006 evo 9 with 618awhp. the sti has 76,xxx miles and the evo has 77,xxx miles, which one do you all think would be the better choice?
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Hard to say if we all don't know your automotive background, the cars history, and your life situation.

My only answer for you is stay away from heavily modified cars.
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Hopefully your prepared to deal with someone else's headaches. It sucks buying heavily modded cars. I love evo 9s though so that would be my choice. Never hurts to find a nice low mileage close to stock evo 9 or 04 Sti and build it. Always more reassuring that way.

Good luck man


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Hopefully your prepared to deal with someone else's headaches. It sucks buying heavily modded cars. I love evo 9s though so that would be my choice. Never hurts to find a nice low mileage close to stock evo 9 or 04 Sti and build it. Always more reassuring that way.

Good luck man


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Hard to say if we all don't know your automotive background, the cars history, and your life situation.

My only answer for you is stay away from heavily modified cars.
Thanks, I have a pretty good automotive background, I,ve owned a 2011 charger rt, i currently own a 2011 challenger srt8 392 thats cammed, lowered, and has exhaust putting down 540 at the wheels. one of my friends owned a 2013 grandsport corvette that was cammed and had an exhaust (not sure on what it was making), bentley continental gt, s63 amg, and a porsche 991 911 s. ive driven them all and had a good control of them and i am very knowledgable with cars. sti has had 3 owners and the 3rd one modified it. and the evo is 2 owner, 2nd owner modified it but hasnt been driven much since it was modded because he was over seas.
Thanks, I have a pretty good automotive background, I,ve owned a 2011 charger rt, i currently own a 2011 challenger srt8 392 thats cammed, lowered, and has exhaust putting down 540 at the wheels. one of my friends owned a 2013 grandsport corvette that was cammed and had an exhaust (not sure on what it was making), bentley continental gt, s63 amg, and a porsche 991 911 s. ive driven them all and had a good control of them and i am very knowledgable with cars. sti has had 3 owners and the 3rd one modified it. and the evo is 2 owner, 2nd owner modified it but hasnt been driven much since it was modded because he was over seas.
Im just going to get this out of the way. If both cars are well built and to your satisfaction, go with the EVO. They are just much more reliable at those power levels then our STis.... Dat Steel 4g63 yo!

But at those power levels almost everything needs to be built. Trans / TC / Axels otherwise your going to have a bad time.


Judging by the cars you've been in, these cars are quite different. High strung high power 4 cylinders dont drive like the 6/8 cylinder cars you have been in. SO whatever your choice, definitely do your homework and be ready because your looking at buying a car that isnt going to make the best DD in the world.

Clarification.... When you make that kind of power in a 4 cylinder, you make no power down low, and then get hit with enough power to break all 4 wheels loose in lower gears. Not only is this dangerous, but at those power levels it only takes something small to make you go boom! If you have never owned a car modified to that level, you better keep a rainy day fund!
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evo's are much better track cars, STis are better as daily drivers since they're more comfortable. Evo will be more reliable at that power range.
I say take pride and buy something stock and do it yourself. Put in the time and effort to make it YOUR car. just my $.02. BUUUUUT if you really want one of those 2 i say buy the evo, and a cheap daily driver. you will need it
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i have come from heavily modded 4s to moderately modded v8s....and trust me the heavily modded 4s will cause you more trouble than moderately modded v8s.
Owning a heavily modded FI car just requires more attention to details.

The reason i went to v8s was due to the headache/amount of work/etc. I had to deal with.
Back in the day I had a turbo miata and the car was a blast, esp when beating cars who don't expect it. But I also had so many headaches with the car. Next cars were Pontiac G8 GT, and then traded it for a Camaro SS after prices were not inflated.

I only went back to turbo 4 recently due to the lack of v8 sedans that are "fun" and within my price range plus I needed the space for the kiddos. Oh and my STI is stock.
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After buying a heavily modified car (not as modified as the ones you are looking at but 480whp) I will never buy a very modified car again. I could have a brand new STi right now with all the money I have had to dump into my current STi!
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Just because you have come from heavily modified cars doesn't mean the owners of both cars have. Who knows what things were done to those cars over the years
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Daily driver comfort on an STI vs an EVO I would question at the level this cars are built to. When you get to solid mounts, loud high flowing exhausts, EWG dumping to atmosphere, and perhaps other chassis modifications you lose all the daily driver comfort differences between brands.

When it comes down to block designs, you have 8 bolts per head keeping them pinned down on a boxer short block. You have 16 on an inline 4-cylinder for an evo. This would equal more/distributed clamping force for the block design, less tendency to lift heads at 30+ psi boost levels.


I would think the Evo would be more open minded to those kinds of power levels so I would lean towards the Evo if you had to chose between the 2.....but it all depends on how they built these cars and what level of care went into them. The STI could have been build with I-beam connecting rods while the Evo was build with H-beams for all we know at this point. A lot of that matters.
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thanks guys for all the input! i dont really care about how good of a DD the car is, right now my challenger is my dd and it has open headers and has the rear stripped so im used to it being very loud
It all depends on what your goals are. I disagree with the post about track cars -- both platforms are proven in global time attack -- and IIRC GST motorsports (Subaru, not EVO) was winning by 9s on some courses.

EVO is a simple platform to build for power. If you're in it for building large numbers, build a nasty 4g64 (2.4L) and enjoy the ride. EVOs have some pains in the ass for reliability with regards to parts like coil packs and are much more prone to driving like ass around town with small issues. However, if built properly, they are some nasty cars for pure WHP.

At the end of the day, it's six of one, half dozen of the other. Build an EVO for stupid power and eat trans parts if you abuse her. Build an STi and shit out shortblocks at high power.
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Fujiwara has it right, as does everyone else.

You better know whichever car you decide to buy like the back of your hand before you buy it. You better know every single part that went into it, what it does for the car and what it is designed to stand up to. You can build a stock block STi to 580whp and have it survive the dyno.

I would not touch either of those cars. If i wanted those power levels in an AWD car I would be looking at a GTR. Neither the Suby nor the Mitsu are ideal platforms for making such ridiculous power. If I am really being honest with myself, and I wanted a monster, it would be a supercharged V8 of some flavor. Just WAYYYY less headache.
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Fujiwara has it right, as does everyone else.

You better know whichever car you decide to buy like the back of your hand before you buy it. You better know every single part that went into it, what it does for the car and what it is designed to stand up to. You can build a stock block STi to 580whp and have it survive the dyno.

I would not touch either of those cars. If i wanted those power levels in an AWD car I would be looking at a GTR. Neither the Suby nor the Mitsu are ideal platforms for making such ridiculous power. If I am really being honest with myself, and I wanted a monster, it would be a supercharged V8 of some flavor. Just WAYYYY less headache.
i thought about supercharging the challenger i own
Either one of these cars will be an endless source of headache. As long as you are prepared for that. . . at those power levels you are better off going with something with more displacement. What about a GTR?
stay away from highly modified cars unless you know each and ever single part that has been worked on and WHO has done the work.

for the money you'll be putting into these cars to keep them running, get yourself a used GTR and enjoy 0-60 in a blink of an eye :devil:
stay away from highly modified cars unless you know each and ever single part that has been worked on and WHO has done the work.

for the money you'll be putting into these cars to keep them running, get yourself a used GTR and enjoy 0-60 in a blink of an eye :devil:
the maintenance of a gtr isn't cheap either...
the maintenance of a gtr isn't cheap either...
cheaper than a high powered 4 banger ;)
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