N/A EJ25 power limits

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11-25-2002, 01:21 AM

#31

Kevin M

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iTrader: (12)

Join Date: Nov 2002

Location: Reno, NV

Posts: 18,369

Car Info: 1993/2000/2001 GF4 mostly red

Quote:

Originally posted by Kostamojen
Whoops! Quoted the wrong post!

And a turbo/intercooler with all the piping and equipment is a big more than just an 30lbs... Unless you got some really lightweight exhaust piping... (Note the WRX's 100lbs weight difference to the concurent model RS's)

Yeah, I got thinking about that after I posted and realized just the turbo could weigh close to that much. Just didn't feel like editing. Since I wouldn't get any ***** points, hahaha.

11-25-2002, 03:59 AM

#32

N/A

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So back to my comment about raising the compression from its 10 to 1 up to as much as 12 to 1. Has anybody tried it yet? It might not give the big hp gains but I'd imagine it would help out to give the car even more of the low end torque that makes the EJ25 so fun.

11-25-2002, 06:30 AM

#33

PDXImpreza

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I am also interested in what the higher CR pistons will do for our car.

11-25-2002, 08:41 AM

#34

N/ABeast

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Has anyone seen the SYMS prototype Intake Manifold, it looks pretty damn sweet..

11-26-2002, 07:12 AM

#35

Deznuts05

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Just to add to the fire, to get 200 bhp cams and heads.

I would recomned Cobb's N/A settup..

If your on a budget like I was best way to get parts are from message boards... I got mine from the old I-club for a very good price... but like some people have already said, simple bolt-on's won't get you to your goal... you'll need the engine interals.

On the otherside I was quite happy with my purchase:
3rd gen Borla headers
Stromnung 76mm cat-back w/ SS Dual tip Muffler
UD Pulley
K&N with Larry Ganza's Pipe

My best time was a 15.01 on the 1/4 with a trap speed of 89.88 mph this was a cool night in October and had stock suppention and tires. Running on 91 octane.

With my setup there is barely and lost in low-end. The mid-range is increased and the high-end is incressed... actually it seems that the higher I go the more it wants to go... what I mean is if I have it in 4th going 70mph the rpms are aroung 4500. I slam the pedel it shoots from 4500 to 6250 in seconds w/o hessatation.

Personally, this setup is great for auto-x, nice tight ones.

There are tons of products out there but if your on a budget there's no point in payin full price if someone else is willing to sell their stuff. Plus, all the parts out there are already test proven eg the borla, stromnung... so if you don't want to waste your money or time going through parts. try looking for someone who's interisted in selling their parts....

11-26-2002, 08:20 AM

#36

N/ABeast

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Well the internals will help if you raise the redline, but our cars are lacking air IMHO. We need more airflow so we can add more gas and spark

I don't think upping the compression will do much, but why not do it if you're building the engine anyway?

11-26-2002, 08:22 AM

#37

N/ABeast

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Youre right about finding used parts. I recommend CObb parts too, I just don't recommend their prices..

11-26-2002, 10:23 AM

#38

imprezton

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I lay awake at night, dreaming of Cobb Stage 3.

But $4,000 is a hefty price tag, and everything I touch mechanically turns to salvage, so I'd have to pay professional mechanic to install and tune.

My fear of purchasing internals used is that I wouldn't know how well they were treated, and I wouldn't have confidence in their reliability.