Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

cheapest way to gain most HP

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Old 12-13-2003, 10:50 AM
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Car Info: Sold my 05 Evo...Carless for a while...then 05' WRB STi whenever lol :(
my list for when i get my STi:

Blitz SUS Intake
JIC Ti Cat-Back Exhaust
still up in the air about up/down pipes(maybe God Speed or ?)
TEIN Flex Coilovers w/ EDFC
20% Tint
A damn radio
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Old 12-13-2003, 03:37 PM
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Not they will not work with the stock STi suspension. The STi suspension isn't coilovers either. They are just stiffer (lowering) springs with better shocks/struts.
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Old 12-14-2003, 08:22 AM
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Car Info: Sold my 05 Evo...Carless for a while...then 05' WRB STi whenever lol :(
yup they wont fit on the Stock STi suspension because on TEIN coilovers...there are special pillowball mounts and with TEIN coilovers theres and adjusment dial that lets you go softer or stiffer....the EDFC goes over that dial and lets you control it from the cockpit
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Old 12-14-2003, 03:16 PM
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you can do a decent suspension for much less than 2 large. Just springs (250) struts (500) rear swaybar (300)
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Old 12-16-2003, 10:24 AM
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The cheapest way to get the most horsepower is nitrous. Not the safest, but you asked what the cheapest was.
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Old 12-16-2003, 09:49 PM
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Re: cheapest way to gain most HP

Originally posted by team23jordan
what brand makes the best up&down pipe? HKS?

what brand makes the best exhaust that is not too loud but not too quite?? 5zigen?? HKS??
HKS makes absolutely awful Subaru exhausts. Worse than stock except for being catless. And you don't gain anything from replacing the STi uppipe because it's catless.

As for exhaust, I'd go with the Vishnu standard exhaust. It has a high-flow cat, makes tons of power, isn't that expensive, and has a nice but not loud sound.

Also, intakes are not worth anything on turbo Subarus. Get engine management via a reflash or Xede instead.

Last edited by Kevin M; 12-16-2003 at 09:53 PM.
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Old 12-16-2003, 09:52 PM
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Originally posted by whitelegacy98
you can do a decent suspension for much less than 2 large. Just springs (250) struts (500) rear swaybar (300)
I don't think that stand-alone springs or struts are much of an improvement over stock. You can make the suspension stiffer that way, but I don't think it will necessarily make the car faster. Coilovers are the way to go on that car IMO.

Oh, and sway bars don't cost $300 unless you're canadian.
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Old 12-18-2003, 02:46 PM
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Im thinking of the JIC Catback exhaust as well. The build quality is great and it saves 20 puonds! It only wieghs 8. Later on after we get this boost creep issue sorted out I will be going with a Godspeed downpipe.
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Old 12-23-2003, 11:39 AM
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Stock headers. The HKS catback is okay, but almost every catback works the same, buy that based on looks and sound. The problem with HKS is their downpipe, it's awful. I always recommend going with one company's complete turboback exhaust, with one high flow cat.
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Old 12-25-2003, 11:35 PM
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P.D.E down-pipe and stock cat-back = best bang for the $$$
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