Solo II help
Jan 3, 2009, 12:30 AM
#1
Solo II help
Anyone have a good link that explains modification restrictions for Solo II autocross classes? I've read the manual, but I'm a bit unsure on some things. I'm not sure what options I have between A stock and STX, but I know I don't want to be modding what I can't use on the weekend.
Thanks in advance.
Thanks in advance.
Jan 3, 2009, 01:43 AM
#2
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You'd be running in STU. But as far as AS, you basically can only do the following:
Adjustable shocks
Drop in air filter
Cat back exhaust
R compound tires
Wheels must be the same diameter and width. The offset cannot exceed 1/4" (6.35mm) from the stock offset.
There are other things you can do (harnesses, etc) but they don't particularly improve performance. My recommendation is to learn/appreciate the stock car. Just get an alignment and go straight into STU because the PAX index is better.
Adjustable shocks
Drop in air filter
Cat back exhaust
R compound tires
Wheels must be the same diameter and width. The offset cannot exceed 1/4" (6.35mm) from the stock offset.
There are other things you can do (harnesses, etc) but they don't particularly improve performance. My recommendation is to learn/appreciate the stock car. Just get an alignment and go straight into STU because the PAX index is better.
Jan 3, 2009, 07:13 AM
#3
You can get an alignment in A-stock as well.
Like markpaco sai, you'd be in STU. STU allows you to do this:
- intake
- exhaust (full TBE, but you must retain a cat)
- coilovers or springs/struts
- sway bars
- camber/caster plates
- change wheels
- ss DOT brake lines
- brake pads
- big brake kit
- some aero mods
- no lightening mods
- retune FUEL maps only (no boost modifications, so no boost controllers, boost control in the ECU, etc.)
However, you are limited to a street tire with 140 tread rating or higher and 245 max width.
The "next" step is BSP (this is just the main difference between STU and BSP):
- engine remap/boost control is allowed
- R compound tires
- NO big brake kits
- no tire width limitations
Personally, I feel that the X is NOT competitive in a competitive AS class but it competitive in a strong STU class. If you are running in a PAX class (like Novice) then, even bone stock, STU is a better class to run in.
Scroll down on the main index to the Motorsports section. There's lots of info.
Like markpaco sai, you'd be in STU. STU allows you to do this:
- intake
- exhaust (full TBE, but you must retain a cat)
- coilovers or springs/struts
- sway bars
- camber/caster plates
- change wheels
- ss DOT brake lines
- brake pads
- big brake kit
- some aero mods
- no lightening mods
- retune FUEL maps only (no boost modifications, so no boost controllers, boost control in the ECU, etc.)
However, you are limited to a street tire with 140 tread rating or higher and 245 max width.
The "next" step is BSP (this is just the main difference between STU and BSP):
- engine remap/boost control is allowed
- R compound tires
- NO big brake kits
- no tire width limitations
Personally, I feel that the X is NOT competitive in a competitive AS class but it competitive in a strong STU class. If you are running in a PAX class (like Novice) then, even bone stock, STU is a better class to run in.
Scroll down on the main index to the Motorsports section. There's lots of info.
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