I would like to autocross my Sol next spring. Does anyone know off hand whether you can make modifications to the Air Intake system and still autocross in the low stock class? I put an intake on my Miata which was a fairly easy mod and it seemed to run better. Since I'm new at this (I haven't autocrossed since my college days) I would like to start out in the lowest stock class so I'm not competing against the "pros". Your input would be greatly appreciated!

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Zip, Zero, Nada, None.... Well you can replace the stock air filter with a K&N type that fits the stock air box.

Basically the only allowed modification to a Stock Class car are shocks, Front swaybar, and tires.

SCCA Solo 2 rule book in PDF

(if it doesn't specifically say you can, you can't)

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Stupidity is the basic building block of the universe. -- Frank Zappa

LBJay,
Thanks for the info.

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AKA xmm
First 1000 Order VIN # 000218 - Time Stamp 2:35:20
DEEP with Steel/Sand leather,
72,300+ miles on the odo - Silver side stripes - My wife named my car "Nittany" after Penn State, my Alma Mater
Reborn at the factory at 57,100 miles
Proud Member - ICoD EHDoR&M
WPASC
~~~~~~~~~~~~~~~
NASSOA
Founding Member #41
~~~~~~~~~~~~~~~
"It's Going To Be A Girl......plus one more on the way!!!"

Hows about the GM cold air intake and catback, dealer option so is that still stock?

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dealer expected deliver 6 March, arrived 28 Feb, picked up that night w 3.2 miles on the clock :)
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Stock means as it came off the production line. No dealer installed options are legal.

Any catback exhaust would be legal. I forgot to put that in my other post. You can change the exhaust. It's basicly any part that would be replaced over time from normal wear. Shocks, brake pads, tires.

It's all in the rules.

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Stupidity is the basic building block of the universe. -- Frank Zappa

Reading over the rules it looks like OE tires are also required. Wheels of the same width and diameter and a max of +/- .25" (6.35 mm) offset difference.

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It sounds like the rules are pretty tight. My only hope would be for a Solo Solstice division. I think I could do well in that division knowing there is only one other Solstice in my area. Thanks for all the good info!!

__________________
AKA xmm
First 1000 Order VIN # 000218 - Time Stamp 2:35:20
DEEP with Steel/Sand leather,
72,300+ miles on the odo - Silver side stripes - My wife named my car "Nittany" after Penn State, my Alma Mater
Reborn at the factory at 57,100 miles
Proud Member - ICoD EHDoR&M
WPASC
~~~~~~~~~~~~~~~
NASSOA
Founding Member #41
~~~~~~~~~~~~~~~
"It's Going To Be A Girl......plus one more on the way!!!"

Well since the original concept car had the F1's GS-D3 then those are OK.

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No XM/OnStar and NO Spoiler.

MODS (RKSport/Magnaflow dual exit exhaust system, K&N filter, Ventureshield.
First 1000. Aggressive with everything, NO XM/OnStar. SOLD
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Nope. Any DOT approved tire is legal. Like these R-compounds...

Hoosier A3S05
Kumho ECSTA V710

Only $240-$260 ea in Solstice sizes.

You can also check and see if your local group has a street tire class and what the rules are for that.

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Stupidity is the basic building block of the universe. -- Frank Zappa

Yup, you're right. I read the main heading part but didn't read the sub headings close enough.

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Based on past experience, I would go with a P245/40R18 Hoosier, or maybe even a P245/35 Hoosier - IF you are really serious.

Like LBJay said, some local regions run street tire class, for some of those, Michelin PS2 or Goodyear GS-D3's would do quite well.

I haven't read through them in a while, are you sure shocks are allowed, LB'? 9meg + on dialup sucks...

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Yep. Stock, Koni adjustables, or anything up to dual adjustable Penskes ($$$$) as long as you keep the same mounting points and same spring perch height. (no lowering)

You can put on $4000 worth of shocks but you can't change the shift knob....

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Stupidity is the basic building block of the universe. -- Frank Zappa