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Old 12-05-2003, 12:28 PM   #1
subarucyclist
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Default Mods...is header/randomtech worth it?

I have an ooRS with the usual mods, Cobb CAI, sway bar, tires, greenstuff pads, kartboy shifter, grounding mod and a 5Zigen axleback exhaust. The car runs strong, but you know, it's not going to scare Corvettes away anytime soon.

I have a chance to score a Borla Gen4 header and RandomTech cat/midpipe for my car in the next week or two. I'm probably going to do it, but I have a few concerns. First, my car already looks and sounds like it's way faster than it probably is, which means I have every RSX in town looking to race me. I'm sure the header/cats will make my car way louder (I've heard the setup with a Stromung axleback, but not the 5Zigen) but I'm just wondering if it'll really make the car faster, enough to justify the noise?

My car's already pretty loud, if all this does is make it louder, I'll have to think real hard about it.

What's everyone think?
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Old 12-05-2003, 12:36 PM   #2
subarucyclist
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I forgot, I've also got STI springs and KYB struts, so apart from the header/midpipe and the risky proposition of a turbo kit, I'm almost out of toys to buy.
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Old 12-05-2003, 12:37 PM   #3
DanzBorin
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borlas w/ a high flow make for decent gains...

mrt headers and midpipe would make more for around the same price...
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Old 12-05-2003, 12:39 PM   #4
DanzBorin
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Quote:
Originally posted by subarucyclist
I forgot, I've also got STI springs and KYB struts, so apart from the header/midpipe and the risky proposition of a turbo kit, I'm almost out of toys to buy.
more toys:
strut tops
pulleys
cams
sway bar end links
seats

cheap mods:
throttle body bypass mod
shifter bushings (if you don't have)
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Old 12-05-2003, 01:29 PM   #5
subarucyclist
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Thanks for the reply, Dan.

I probably would look at MRT or Techworks, but the Borla/RandomTech in question will be basically free, whereas the other stuff wouldn't be. If it really does make the car pull harder, I'll give it a shot.

As for the other stuff, my wife won't let me spend the $$$ on seats (You already HAVE seats, she says) and Mike Shields at SPO insists that metal end links don't do anything good for a GC8, something about transitioning from spring to roll bar being too abrupt. I wouldn't argue with anyone on the subject, as I'm pretty new to these cars, but Mike seems like a very knowledgable suby suspension wizard.

I had pulleys and heard so many nightmares that I sold them before installing. I have shifter bushings, I'd love cams but I live with CA smog restrictions.

Whats the TB bypass do?
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Old 12-05-2003, 02:47 PM   #6
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Quote:
Originally posted by subarucyclist
Thanks for the reply, Dan.

I probably would look at MRT or Techworks, but the Borla/RandomTech in question will be basically free, whereas the other stuff wouldn't be. If it really does make the car pull harder, I'll give it a shot.

As for the other stuff, my wife won't let me spend the $$$ on seats (You already HAVE seats, she says) and Mike Shields at SPO insists that metal end links don't do anything good for a GC8, something about transitioning from spring to roll bar being too abrupt. I wouldn't argue with anyone on the subject, as I'm pretty new to these cars, but Mike seems like a very knowledgable suby suspension wizard.

I had pulleys and heard so many nightmares that I sold them before installing. I have shifter bushings, I'd love cams but I live with CA smog restrictions.

Whats the TB bypass do?
what size sway do you have... On 22mm like I had, I would have never done it with the stock links... they could have easily broken as 22mm is really that stiff...

as far as seats... I highly, highly recommend them... my wife was skeptical until I got my V4s, now she wants JDM seats for the STi too... they really are that good... hold you in place, and are really comfy too...

the Throttle body bypass mod is basically this... coolant lines run through the throttle body... that causes air going into the intake manifold to be warmer than it could be... so you pull the hoses off either side, and then reconnect them underneath, and cap off the plugs on the TB... really does make a difference... not 10hp, but more like 2-3... not bad for a couple of bucks...

and pulleys aren't the evil people make them up to be... I know a guy with an unorthodox pulley that has has it on his 91 legacy with 170k miles and nothing has exploded yet...
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Old 12-05-2003, 03:06 PM   #7
subarucyclist
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I'm running a 20mm bar, which again according to Shields, is ideal w/ the STI springs and KYB's I'm running. It was a big improvement over the 18mm bar I had before.

As for the pulley's, I've never heard of them causing damage to anything, but I've heard consistent issues with them coming loose, and even causing the already overactive knock sensor to spaz out. My local Suby dealership (suby of santa cruz, one of the best in the country I hear) says that they install pulleys and lightweight flywheel assemblys, and then the owner wants them removed a month later due to knock sensor issues. I was going to have them installed along with my new timing belts, and they basically talked me out of it. I had great results with UD pulleys on my 5.0, but that was years ago.

Seats. Oh how they tempt me.
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Old 12-05-2003, 03:13 PM   #8
DanzBorin
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Quote:
Originally posted by subarucyclist
I'm running a 20mm bar, which again according to Shields, is ideal w/ the STI springs and KYB's I'm running. It was a big improvement over the 18mm bar I had before.

Seats. Oh how they tempt me.
The seats are definately worth it... promise... best mod I ever did...

I was running AGXs with the P1 springs and STi tops, I had the rears at 7 and the fronts at 1... I am oversteer crazy though, and wanted a bit more, so I adjusted the sway from 20-22...
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Old 12-05-2003, 04:21 PM   #9
subarucyclist
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1 and 7? Wow, I bet that would induce some oversteer.

Mine's fairly neutral once the front tires wear in; when they're new, it pushed like a pig before I went 20 in back, but when I had my springs done I kept the stock camber/castor settings, which helps tire wear but causes a bit more understeer. I've bumped it up to 3/5 on occasion but I have a lot of bumpy roads around here and keep it 2/4 most of the time.

I hear that STI springs are designed to work with a 20mm bar, but with Eibach's and P1's you'd be opening up a can of snap oversteer, if you're into that.
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Old 12-05-2003, 04:27 PM   #10
DanzBorin
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In autocross you need that oversteer... I never had any problems with snap on the roads either... I'm sure if you don't know what the hell you are doing, you could easily screw up, but I was used to the feel... try a 1/5... should feel nice... I live in houston, and the roads are far from stellar here too...
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Old 12-06-2003, 11:40 AM   #11
Ahzlon
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hey this dude installed the 5Zigen Cat back, Borla Heads and the random tech cat... click on the MP3 sound file.. it sounds abosolutly stellar IMO
http://www.darchartracing.com/projec...5zigenexhaust/
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Old 12-06-2003, 11:51 PM   #12
liigod
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throw away your brake pads
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