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Old 12-17-2002, 10:47 PM   #1
DILLIGAF Racing
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Default Stock Class

I have a question about the stock class. Its not so much about the rules though. It says that you can have a Catback Exhaust, is there any exhaust out there, that is catback that can be upgraded if I decide to run a different class? I think since I got the WRX, I may start to Auto-X again, but I wanna start off with just Stock class, and go from there.
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Old 12-18-2002, 02:40 AM   #2
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Well, if you are planning on possibly upgrading from the turbo back in the future, you may want to think about which turboback you are most interested in. If you get a cat back exhaust, getting a downpipe would pretty much set you up, and you can always add a 3rd cat eliminator to that.

Another option would be a setup like the turboxs, where you replace the full factory system except for the muffler--you could pair that with any muffler you have now or pick up. You aren't going to get much gains from changing the pipes between the cat and the axle piece, IMO, so that may be a good option for now.
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Old 12-18-2002, 06:01 PM   #3
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That wouldn't be legal for stock class though, right? It says Cat Back. But I was also thinking, doesn't the car have like 3 cats? It doesn't say which cat I have to start at, does it?
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Old 12-18-2002, 06:08 PM   #4
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Default Re: Stock Class

Quote:
Originally posted by DILLIGAF Racing
I have a question about the stock class. Its not so much about the rules though. It says that you can have a Catback Exhaust, is there any exhaust out there, that is catback that can be upgraded if I decide to run a different class? I think since I got the WRX, I may start to Auto-X again, but I wanna start off with just Stock class, and go from there.
Ones like the Scoobysport (old style) and Stromung are modular and you can mix and match stock pieces to them anywhere after the turbo. That would be your best bet, probably.
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Old 12-18-2002, 07:27 PM   #5
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Quote:
Originally posted by DILLIGAF Racing
That wouldn't be legal for stock class though, right? It says Cat Back. But I was also thinking, doesn't the car have like 3 cats? It doesn't say which cat I have to start at, does it?
Hmmm... good question... but I beleive it's after the last cat... But let me look it up.
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Old 12-18-2002, 07:28 PM   #6
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Quote:
Originally posted by DILLIGAF Racing
That wouldn't be legal for stock class though, right? It says Cat Back. But I was also thinking, doesn't the car have like 3 cats? It doesn't say which cat I have to start at, does it?
You have to start after the LAST cat. It doesn't say so in as many words, but that's the meaning of the rule. All three factory cats have to stay in place.
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Old 12-18-2002, 07:29 PM   #7
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OK, here's the rule in it's entirety:

Any part of the exhaust system beyond (downstream from) the header/manifold or catalytic converter, if so equipped, may be substituted provided the system meets the requirements of 3.5. Stainless steel heat exchangers are permitted only if the physical dimensions and configuration remain unchanged. Modifications of any type, including additions to or removal of, the catalytic converters, thermal reactors, or any other pollution control devices in the exhaust system are not allowed and the system must be operable. Replacement catalytic converters must be OEM if the vehicle has not exceeded the 5-year/50,000 mile warranty period as mandated by the EPA. Converters must be of the same type and size and used in the same location as the original equipment converter(s). This does not allow for a high performance unit. If the vehicle has exceeded the 5 year/50,000 mile warranty period, replacement catalytic converters must be OEM-type as per Section 13.

So that's your answer... cannot remove ANY cats.

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Old 12-18-2002, 09:31 PM   #8
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I should clear up what I was saying. Apparently I was having a late night brain fart and it wasn't coming out the way I was thinking it.

Basically what I was trying to say this:

If you are planning on further upgrades in the future, plan ahead to what you want. In most cases any cat back section you get now can pair up with another downpipe in the future (move you to STX). Pair that up with a custom high flow cat to still meet the STX requirements, or run a 3rd cat eliminator (stromung makes one) to go for SM (maybe ESP) requirements. The exception to this would be the turboxs turboback, which would take place of everything except for the muffler section.

Hopefully this spewage from my brain makes more sense.
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Old 12-18-2002, 10:31 PM   #9
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ok, so basically look for a cat back, keep everything the way it is, and then in time, find a down pipe. Works for me.
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Old 12-19-2002, 02:04 AM   #10
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Quote:
Originally posted by DILLIGAF Racing
ok, so basically look for a cat back, keep everything the way it is, and then in time, find a down pipe. Works for me.
Exactly. You'll be all set.
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Old 12-21-2002, 10:13 PM   #11
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Is the STI scoop legal for Stock Class, I know its kind of a stupid thing to be bumped for, but you never know. Sorry to be asking questions like this, but I am not sure how stock rules go, my last car I was in stock class for 1 autox, then went to DSP, then STS then gave up when I got sent to SM.
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Old 12-22-2002, 11:21 AM   #12
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Quote:
Originally posted by DILLIGAF Racing
Is the STI scoop legal for Stock Class
No, I think that would put you into SM.
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Old 12-22-2002, 11:23 AM   #13
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Quote:
Originally posted by TheWRX

No, I think that would put you into SM.
Any change like that in Stock isn't legal. It *MAY* be legal in SP or STX only *IF* the STi and the WRX are on the same line in the class. But don't count on that happening. So yes, SM would allow this.

--kC
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Old 12-22-2002, 12:39 PM   #14
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What about ESP for the scoop?

Dave

DS prepped WRX
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Old 12-22-2002, 12:56 PM   #15
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KC, TheWRX...

couple of questions...

Is the hood scoop considered part of the body?

My question is this... Can the STI hood scoop be considered part of the "apperance" items like STI badges, wings, and other aero parts available?

If this is true, then the STI hood scoop would be STX legal.

If the STI hood scoop is considered an "intercooler mod" then actually it would be legal for ESP and SM. Remember intercoolers are unrestricted in ESP.
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Old 12-22-2002, 02:03 PM   #16
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Quote:
Originally posted by ChrisW
KC, TheWRX...

couple of questions...

Is the hood scoop considered part of the body?

My question is this... Can the STI hood scoop be considered part of the "apperance" items like STI badges, wings, and other aero parts available?

If this is true, then the STI hood scoop would be STX legal.

If the STI hood scoop is considered an "intercooler mod" then actually it would be legal for ESP and SM. Remember intercoolers are unrestricted in ESP.
Scoobiedoggie... SP means any street prepared class. (xSP) That's what I was referring to above.

Chris: The scoop cannot be considered 'appearance'. Why? It does more than appearance... it actually serves a function, to get more air to the IC.

About SP, since the Scoop is 1st and formost part of another model line, unless the STi and WRX are on the same line, UD/BD cannot get you the STi scoop on the WRX. Also, the rule is written like this "Carburetors, fuel injection, intercoolers and intake manifolds are unrestricted." You'll have a hard time saying a Hood scoop is part of an intercooler. Note, the rule isn't "an intercooler system and it's components". So it's the actual unit itself.

Again, this is how I'm intrepreting the rules. Also remember something about UD/BD: "The updated/backdated part or the part to which it is to be attached may not be altered, modified, machined, or otherwise changed to facilitate the updating/backdating allowance" If the scoop is of a different shape and mounting points (the hood itself is actually of a different shape and it wouldn't surprise me if the scoop didn't fit our WRX's) it's not going to be an allowed UD/BD in SP.

Now in SM, I would say it would be legal... but I'm not fully up to date on SM rules, the best would be to ask the STU list on yahoo groups.

--kC
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Old 12-22-2002, 02:57 PM   #17
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I'm not the ultimate expert on rules, but the reason I said SM for the hood scoop is that I just couldn't think of a rule in "lower" classes that would allow it. The closest is probably 17.2.F in STS that allows "Spoilers, body kits, rear wings, etc.". Sounds fairly vague, if you want to risk a protest, go ahead and give it a shot, claim that the hood scoop fits under "etc.", and we'll all read the answer in Fastrack!

SM allows replacement hoods, so putting a different scoop on the stock hood should be fine.
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Old 12-22-2002, 07:53 PM   #18
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Quote:
Originally posted by KC
Scoobiedoggie... SP means any street prepared class. (xSP) That's what I was referring to above.

Chris: The scoop cannot be considered 'appearance'. Why? It does more than appearance... it actually serves a function, to get more air to the IC.
True, but it serves a function on a part that we are allowed to modify under street prepared rules. which rule has precidence? Stock? ESP?

Quote:

About SP, since the Scoop is 1st and formost part of another model line, unless the STi and WRX are on the same line, UD/BD cannot get you the STi scoop on the WRX. Also, the rule is written like this "Carburetors, fuel injection, intercoolers and intake manifolds are unrestricted." You'll have a hard time saying a Hood scoop is part of an intercooler. Note, the rule isn't "an intercooler system and it's components". So it's the actual unit itself.


--kC
I am not aruging that the hood scoop is part of the intercooler system, but it does directly affect it's performance.
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Old 12-22-2002, 11:32 PM   #19
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Quote:
Originally posted by ChrisW
True, but it serves a function on a part that we are allowed to modify under street prepared rules. which rule has precidence? Stock? ESP?

I am not aruging that the hood scoop is part of the intercooler system, but it does directly affect it's performance.
"If it doesn't say you can, then you can't." The rule says 'intercooler', not it's 'system and/or parts. So the rules there look pretty black and white, unless I'm not looking at the rule that you are.

What I'm doing here is making you work for it, devils advocate so to speak, because at a national event, in ESP especailly, you will have protests and you need to back up your findings to the 'T' to support your arguement for the scoop.

Show me the rule that states that you can alter airflow for an intercooler. That's what I believe it'll come down to. Again, this is how *I* am interpreting the the rules and I've been wrong before.

However, I believe that if the STi and the WRX have different scoops, and are NOT on the same line, it's going to be a very tough sell in SP.

TheWRX... you actually may have a point in that line in SM. But I do know they (SM) are trying to clean up those little loopholes that have been there.

--KC
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Old 12-23-2002, 12:17 AM   #20
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KC, your probably right. I have heard that argument before.

Quote:
Originally posted by TheWRX
I'm not the ultimate expert on rules, but the reason I said SM for the hood scoop is that I just couldn't think of a rule in "lower" classes that would allow it. The closest is probably 17.2.F in STS that allows "Spoilers, body kits, rear wings, etc.". Sounds fairly vague, if you want to risk a protest, go ahead and give it a shot, claim that the hood scoop fits under "etc.", and we'll all read the answer in Fastrack!

SM allows replacement hoods, so putting a different scoop on the stock hood should be fine.
You could make the argument that, lets say, I want to install body kit that would make my WRX look like a prodrive WRX. If that body kit includes a new STI hood scoop, then I guess it's perfectly legal. But then again, you need all of the body kit or nothing or you risk getting protested.
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Old 12-23-2002, 07:54 AM   #21
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Yeah, it comes down to something like that. Were you around a couple years algo with the whole 2.5RS blocking plate removal deal in STS? They said that removal of the plate, even for a non-functional hoodscoop, was illegal. It was all based on the whole 'doesn't say you can' methodology and no one who had done this could argue a rule that said you can do it.

And even tho burdon of proof is on the competitors, those who did it coudln't claim comfort & convenience. So that measly little blocking plate had to stay blocked. Kinda rediculous if you ask me, but rules is rules.

I'm sure on a local level, there wouldn't be an issue.

I was also thinking, if the WRX comes with the bigger hoodscoop, then it would, IMHO, be a legal UD/BD item to the 02/03 WRXs, only if it bolts right into place with no modification needed.
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Old 12-26-2002, 06:58 AM   #22
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Default Rear Sway Bar Swap?

What would just replacing the wagon rear sway bar with the sedan's put me? DSP?
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Old 12-26-2002, 08:57 AM   #23
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With the replaced bar, you can run in either ESP (R-Compound) or STX (Street Tires).

--kC
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