No prob. Stay safe over there.

 

What is the biggest difference between SM and BSP? Some of my friends assumed that boost mods put me in SM so that is where I played this past weekend. I managed a 64.x time versus the class winner and good friend running a 60.x with quite a bit more auto-x experience, sticky tires, and coilover suspension on his side. I haven't done an auto-x in 4+ years so it felt good to run decent times on street tires with no cones hit on four runs.

One thing that held me back initially was that I never had the car at the limits even at slower speeds of an Auto-X. After 2 runs of frustration I found that turning off the first stage of ASC (Active Stability Control) was critical to remove the power cut component. This let me control the wheel spin and keep revs up for slower speed corner exits netting a 66.x time. On my last run I held the ASC button down for 5 seconds turning off the brake assist as well and clipped another 2 seconds off with likely more on the table if we had another run. I think for a road course the driver aids would be more beneficial but where jamming the car down to 1st gear would be extra wear and tear I wanted to just leave the car in 2nd for the entire run.

I'll see if I can run in the BSP class for the last event of the year here locally. My mods are in my sig so if anyone can verify that BSP is legal that would be great!

EDit: Meant to say ASC, my ACD settings were on the Gravel setting since the course got slippery with my tires and slight mist coming down

 

The WG actuator puts you into SM. I think the BOV also cannot be changed.

 

I think the WG actuator is ok. Its considered part of the boost control system and is open.

If its a VTA BOV, that will put you in SM, but if its a recirc type, that is also legal in SP.

 

Doesn't matter if it is VTA or recirc. Either are allowed in SP classes. . .

 

everything in your sig is BSP legal. have fun.

 

Oh yeah, that's right... either one is essentially a type of compressor bypass valve. A BOV (the kind prohibited by the rules) is defined as a valve that limits boost pressure by venting intake air, right?

 

Cool, thanks for the input guys!

Is there a condensed set of rules anywhere specifically related to Evo Classifications such as a "Top 10 rules that will bump you to the next Category"?

AS -> BSP -> SM

For example, I know rear Anti-roll bars keep me out of AS but it's a popular first mod to the suspension due to how much it can improve turn in.

I wouldn't be modding the car to fit the rules but it would be good to know the top 10 most likely things that will bump me from BSP -> SM.

Thanks!

 

bsp->sm:
-doing anything to the turbo
-pulling out the rear seat
-roll center correction kit
-replacing body panels with aftermarket versions (carbon hood/trunk/fenders...etc)
-big brake kits
-pounding the body seam flat in the front fender well (is that even SM legal?)

 

Don't forget to add cams to the above bsp>sm list above.

Wow I thought WG actuator wasn't legal. BOV is free--nice. Hmmm new toys to buy.

 

Wait just looked at the 2008 solo rules

From section on Induction Section C

d. No changes are permitted to blow-off/pop-off valves.

 

Hold on are we really referring to Compressor Bypass Valves? They are free.

Please clarify.

 

ah, how could i forget cams. that's got to be one of the top 'get kicked out of BSP' offenders.

re: the 'BOV'. no matter what we call the bov's the rules clearly define what they mean by BOV. The evo's do not have anything installed that fits the solo rules definition of "BOV".

 

Correct - according to the SCCA a BOV is about the same thing as a wastegate. The only place I think you'd see what they call a BOV would be on certain types of supercharged systems with a valve that opens at a set psi to bleed off excess boost. . .

The CBV is allowed, and includes what we commonly think of as VTA or Recirc blow off valves . . .

And yes, for SM massaging the body seam in the rear of the fenderwell is allowed by the "minor notching, grinding, clearancing to facilitate other allowed modifications" rule . . .

 

So the BOV is much like the good old days of CART. The black cylinder on the top of the engine cowling which limits the amount of boost. Ahh the bygone days when CART had 900 HP cars with a wide track and big slicks (not the newer spec cars). Heavier than F1 cars but impressive none the less...