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Old 05-21-2002, 12:03 AM   #1
Leonard
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Default Solo2 STS questions

I'm curious what it'll take to make a competitive STS 2.5RS? Starting from a 98-00 2.5RS is there a common set-up or is everyone different? Are there any already set-up STS Subarus for sale? What happened to Brian Priebes?

ken motonishi 99 Miata, CS #172
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Old 05-21-2002, 02:14 AM   #2
vwong
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Ken,

You're not trying to get a 2.5RS and run in STS after seeing what Hiroo did at Atwater, aren't you???

Vincent
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Old 05-21-2002, 08:10 AM   #3
KC
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There's quite a few different setups that will bet you a competitive car in STS... but the driver of them is the most critical... but you probably know that.

Check out http://www.subrew.com for their STS guide and setup... that should be good to get you started.

Street Touring S and X are mostly about suspension set-up and tire selection (Treadware 140 or higher), including coilovers, sway bars and bushings. In STS, you're limited to the things you can do that will increase HP... but AFC's legal to use (must retain cat(s) in STS) and though judicious tuning, a few more HP can be realized.

In STX, you can do a few more things that you couldn't do in STS, like unlimited brakes, motor mounts, wider wheels (up to 8"), go down to 1 cat, etc... But then again, it's a new class and we're trying to get more people to come and play.

Whatever you choose, they're all fun.

There's something to be said about showing up at an event, running, and driving home on the same set of tires.

--kC
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Old 05-21-2002, 08:10 AM   #4
Brett555
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Priebes old car (or one of them) is running locally here in Ohio in DSP. That thing hooks up.

Anyways, I dont own a Subie, but a friend won STS locally here last year in a 2.5RS was telling me that he is big on the STI parts. He's a firm believer you dont have to spend a ton of money to make a competitive STS car, especially if you have a 2.5RS. I think he had STI springs, sway bars, exhaust, etc, along with KYB AGX shocks, a Schroth harness, and so on. Another prerequisite, of course, will be a set of Falken Azenis tires, which he also had.

The biggest thing will be getting the car sorted once you have all the modifications done. You can do so much to an STS car that you end up with alot of adjustability and tinkering to do. It might take 1/2 a season to get the car sorted. Many of the guys here can probably help shorten that sorting time, but you'll definitely have to spend some time getting the car setup just right for your driving style.

Brett at http://www.soloracer.com/

Last edited by Brett@SoloRacer.com; 05-21-2002 at 09:12 AM.
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Old 05-21-2002, 09:33 AM   #5
Crosser
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If you are seriously thinking of setting one up for national level, you should start with an earlier model they are lighter. Be aware that the 99's with the MAF sensor is prone to blowing with the aftermarket intakes. Eric K has figured that out...3 down. at about $300+ a pop. It can get a bit expensive if you want to have a Nationally competitve one. I would say expect to spend about a minimum of $4-5 K over the price of the car to to have one that is nationally competitive. That is one of the drawbacks, the Subaru aftermarket parts are as a whole more expensive than some of the others, hondas especially.
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Old 05-21-2002, 06:35 PM   #6
Leonard
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Wink

hehe Vincent, i'm just curious that's all...although it does sound awfully tempting, there's another pretty good Cal Club driver who is considering STS. I'll let you wonder who that might be..
why are you checking out this website?

Anyways, thanks for all the info thus far. I had no idea about the MAF on 99 Imprezas. Does it affect all 99+ with intake mods or just some some and why? are the 2000s any different?
I've tinkered some with a 2000 Impreza and may have access to building one for STS. Kinda a long shot but worth investigating I suppose.

ken
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Old 05-21-2002, 06:53 PM   #7
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I just thought of another question:

what is typically the HP and TQ at the wheels for a 98-00 Impreza and with what mods do you get the best HP increase? Which mods are the most beneficial for the money and which are just like not worth it?
can someone direct me to these dyno sheets?

I've done some research but would like to find some more sources and info.
my other quesion: what size tires, 15", 16" or 17" I've seen some using 15x7.5, some with 16x7.5 and a few with 17s but I don't think that the ticket.
How effective are AFCs? and CAIs? KYB shocks or Tein HA, RA or DMS?
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Old 05-21-2002, 07:34 PM   #8
vwong
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Quote:
Originally posted by Leonard
hehe Vincent, i'm just curious that's all...although it does sound awfully tempting, there's another pretty good Cal Club driver who is considering STS. I'll let you wonder who that might be..
why are you checking out this website?
Don't forget that my competitor has a WRX.....(hint hint....a blue one in STX). I guess I shouldn't have posted 'cuz now Rocky knows I'm checking this site, and he probably won't post what's new in his car anymore. Darn it!!!!! Now I just need to find out where Rob hides. Anyone knows an E30 M3 discussion board?

Any hint on who this Cal Clubber is?

Vincent
STX Prelude TypeSH
STS Integra GSR Sedan
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Old 05-21-2002, 07:38 PM   #9
adhowe70
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Ken,

Slumming for a 2.5, I see. If it wasn't Hiroo, it was Chris in GS, eh?

The MAF is specifically a problem on the '99 cars. I drive a 2000 and its got the MAP sensor. So does the '01. Not too sure about the '98. By all accounts, the MAF is very sensitive. The MAP is better, but some '00 cars came with questionable oxygen sensors.

Wheels: Stock is 16x7 ET53 (ET53!?! yes.) This size is great. Most of my regional competitors run on the OEM wheels. They're light and strong. There's not too much advantage to a wider wheel because without significant fender work, you won't fit more than a 225 under the back end of the car.

Being a GS competitor (yeah, I know... Hartman fodder) I don't know much about modding the engine or who makes good coilovers.

Andrew H.
Oregon Region - GS#70
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Old 05-21-2002, 10:15 PM   #10
Crosser
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Quote:
Originally posted by Leonard
I just thought of another question:

what is typically the HP and TQ at the wheels for a 98-00 Impreza and with what mods do you get the best HP increase? Which mods are the most beneficial for the money and which are just like not worth it?
can someone direct me to these dyno sheets?

I've done some research but would like to find some more sources and info.
my other quesion: what size tires, 15", 16" or 17" I've seen some using 15x7.5, some with 16x7.5 and a few with 17s but I don't think that the ticket.
How effective are AFCs? and CAIs? KYB shocks or Tein HA, RA or DMS?
I know Richard West posted his dyno results here with the many intakes he tested while on the dyno. You may want to try a search. As I understand it, the diffiuclty with the MAF and the aftermarket intakes is its mounting location and with several of the intakes you get additional vibration that you do not get in the more solidly mounted stock intake air box.

The AFC is a very good and easy tunning tool. As for numbers...I would rather not say. You will get much better torque than HP number needles to say on these cars.

People have done well with 15", 16", and 17" wheels and tires. You can get top tires in all the sizes that will work. Currently, Eric K and I are rnning a set of Stock 16X7 wheels. That may change soon though.

As for shocks, Eric K and i run Tein's, Richard West is running Big $$$$ DMS DA system. You are looking really at a min of $1000 on shocks that will really make the car work.

These cars can be made to be incredible in transitions. They are tougher to remove the steady state tendency of push. It would require a bit of a change in driving style from your Miata. It also requires a lot of shifting. Gears are very short. 2nd is good for about 50 mph with the tires we are running. There is rarely a Pro and never a tour course that we have run that does not require third gear. Oh yeah, and clutches...be prepared to replace them. Pro luanch...enough said.

They are very fun cars to drive the torque pull out of corners on these cars is great. And the launches...hehehe. How does 1.9 sec 60' on street tires sound? Good huh? I have had a great time co-driving with Kriemelmeyer and look forward to more.

EC
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Old 05-22-2002, 02:03 AM   #11
Leonard
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Eric,

Thanks for the post. I've been watching STS the past few years (well, for that matter I watch and scrutinize every class). After every National Tour/ Pro Solo event I always seem to be watching in awe at how much some of the Subaru drivers are taking home in contingency, etc.
Last year I tried one at a practice and found it fun. I find them even more fun on the street. And the lauch, yes, I like the launch.
I'm curious to know if Subaru plans any future changes for the 2.5RS any time soon which I highly doubt. Other thing I was wondering if there's any other cars that might be as competitive for STS..I know for Pro Solos that a 2.5RS is a good bet but what about for regular Solo 2? Like that Civic hatch that won at Nat'ls last year in the hands of Jason Tipple. Obviously he must have driven well, but was that course ( which I can still recall very clearly) not a good course for all the Subies or is the Honda also a threat for STS but no one has really figured it out yet? I know the 88-91 hatches are somewhat light. How low can you guys get the weight down to? Roughly...don't have to spew out details.


thanks,


keep postin'



ken
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Old 05-22-2002, 08:43 AM   #12
Crosser
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Ken,

Yeah, Subaru contingency is good, but getting harder to get with the increase in Subaru entries. They do not pay for a class win, it is the top three finishing Subaru's in the Super challenge. So you Have to qualify for the supper challenge to even complete for the contingency. The real money is in the street categories now. I am shocked more top drivers have not come becasue of it. With the honda street challenge moeny and now the hankook tire contingency that pays out even if you are not running their tires, etc.

I doubt Subaru is planning much change to the 2.5 RS right now...it has kind of taken a back seat to the WRX and the possible release of the STi WRX. The problem with the current RS is that it has gotten heavy compared to the earlier models. I am sure there are people here that know much more on this subject than I do.

The torque on the subaru makes it a great street car. And of course the AWD. I am a honda man, I have a CRX set up as a good regional CSP and street car. I really enjoy driving Eric's Subaru when I get the chance though. If I lived in an are that received more snow, I would definitely have a Scooby.

As for other capable cars in STS, there are plenty. Jason drove the hell out of the civic at nationals. That course played very well into the civic's strengths. Lots of long sweepers. As I said before, sweepers are not the Subaru's strong suit. Additionally, the course was perfect for the civic gearing...keeping it in the power. We needed to go to 3rd gear in 3 spots and should have gone to it in 4 actually. Eric and I had some car trouble that was occupying our attention and did not evaluate how we were driving the course very well. I for one was always convinced the 88-91 civic's would be a great contender in STS with a good driver. They have one of the best suspensions availabe in the class, they are fairly light, decent power, and have and HUGE aftermarket following. A lot of people, before jason proved them wrong, thought the civic was under powered.

I can say the one car I really keep my eye on regardless if it is a Pro or Tour event is the Hahn's Neon. That car is the only front drive that has been able to stay at the door of Eric's car at a Pro launch. And if it is a good 300' straight, like the Pro Finale course, guaranteed he is pulling on the Subaru by the end. The Neons are able to handle very well and make good power. There were a bunch of them two years ago in STS (look at the natiaonls results in 2000), but all of them have moved on or are out of solo racing. Peter David Smith was playing in STR and is taking this season off, Kiko was converted to the dark side...hehehe, he bought a WRX. Ross Atwell, sold the Neon is not racing right now. Phil Osborne does well with his Neon.

I am sure you have seen Will's Escort run. He is another that would near the top of the heap. Others, include Integra GS-R's I have heard good things about John Wagner's and pat Goss' come to mind, 85-87 Civic Si's (very light in the 1800 lb region), The BMW's are fast...good torque, but weight is their enemy at over 3000 lbs. Elliot harvey is trying his hand with a Nissan NX2000. They have good power, but a limited suspension. He has an uphill battle, but if anyone can make it work he can. To go along with Will's car are the Mazda Protege...they are another that handle very well and are down on power though.

As far as the Subaru weight's go... Eric's car weighs in at 2780 lbs. right now and we have not done much in terms of lightening it...yet. That may change soon.

Hope this helps.
EC
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Old 05-22-2002, 01:35 PM   #13
Leonard
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Eric,

wow, thanks again for you informative post. I, too, am a little surprised that there aren't more top-flight drivers who haven't jumped on the Subaru bandwagon, so to speak. I think perhaps the old fogies just don't know any better or do but can't see themselves driving one. I, myself, would consider one if I lived in, say, Colorado or something. Here, in warm southern California, there's barely a need for all wheel drive. My Miata is like the perfect car to cruise around in.
I'm also a Honda guy. My daily beater is a 93 Civic EX which I rev the crap out of everyday. I've also been keeping my eye out for an early hatch, such as an 88-91. Neons are also quite fast; I've driven one here locally and man that thing can really scoot. Well, we shall see how the season unfolds. I've noticed on the entry list at Petersburg that R. West is going with a different tire than Falken. Is it the KD tire? Are they better or does he just like spending more money?
Any word on that new Kumho street tire? Falkens are great for the street, I've got a set for my Miata and use them for practices, etc. and they wear nicely.


ken
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Old 05-22-2002, 04:06 PM   #14
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Ken,

Yeah, Richard has gone with a 15" Volk and BFG KD set up so far this season. So far he seems to like it. The KD's are probably slightly better tire, but not much than the Falken. Richard should know though, he has tried just about every top tire combo out there. he has 10 sets of wheels and tires for his Subaru. Richard has not spared much expense.

It has been hard to justify the $$$$ of the KD's so far. We may be doing a switch a little later in the season, but we will see. As far as the kuhmo MX's? Who knows, they have not been made available yet. Tirerack just put the size listing back on their website, but do not have any in stock...they are for early order only. If they do preform as well as they are claiming, then they will rivial the Falkens for value. The price on the MX's is not looking too bad. A little more than the Falkens, but still very affordable. The performance will tell the story though, if they ever finally release them. Kuhmo is known for this though.

Keep your fingers crossed for me...i am leaving tomorrow to head down to Petersburg for the Pro(I am helping set the course up). Looks like it is going to be a good event, 190 entries, 16 in STS. Very good competition, Richard West, Eric K, Marc Dana, John Wagner, Kelley Nelson, tony Crea, Jeff Yatsko, etc.

Good luck and let me know if you have any more questions. Feel free to email be privately as well e.carman@worldnet.att.net.

EC

Last edited by Crosser; 05-22-2002 at 04:12 PM.
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Old 05-23-2002, 01:59 PM   #15
z3coupe
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Quote:
Don't forget that my competitor has a WRX.....(hint hint....a blue one in STX). I guess I shouldn't have posted 'cuz now Rocky knows I'm checking this site, and he probably won't post what's new in his car anymore. Darn it!!!!! Now I just need to find out where Rob hides. Anyone knows an E30 M3 discussion board?

Any hint on who this Cal Clubber is?
Ok Vince, you found me now! Guess I'll have to start PM'ing my secrets to the others (like I have any???)

Ken, why don't you just get a WRX and run in STX? I could let you try mine, as long as you leave SOME tread still on the tires, and don't wipe out every cone out on the course (Jason/Taka School of Driving graduate!). Heck, then you might also be able to help me sort out the suspension
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Old 05-23-2002, 05:41 PM   #16
Leonard
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Rocky,

hehe, I am a graduate of the same school. That's ok, actually cause this year I've stayed away from cones in a big way. Last year, me and Jason Uyeda tied for the most cones in a single season for regular competition runs- 33 cones. This year, however, I'm way off pace. I think I've hit less than 8 so far this year in competition runs, probably more like 6 or 7. I guess you could say I've gotten a little better.
Ya, I'm always around so if you'd like some input from me you know where to find me. I've got some experience already in a WRX, from stock to highly modified, they don't scare me too much.

ken
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Old 05-24-2002, 01:41 AM   #17
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Well Ken, maybe drive it Saturday when I get there. I am not sure what class to run in yet (ESP or SM), as I am testing exhaust systems and currently have no cats at the moment. We are doing this one to get a base to build upon as we put a cat back on it (BEFORE the next Cal Cluub event, Vince hehehe) in different locations to see the effect on HP/TQ. Got to fix that lowend
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