Sam,
Controlling boost in SP (or any other class) is a tough problem. I suppose
that's why the SCCA outlawed turbo cars in Showroom Stock several years ago
(I used to road race an MR2 Turbo in the former SSGT class). However, there
are discussions going on now about allowing turbo/supercharged cars to run
in Touring, so perhaps folks are thinking they can keep the playing field
level now. A supercharged car like the Mini Cooper S might be easier to
police than a turbo car, so that might be a consideration as well. It will
be interesting to watch what happens if the Evo8 and STi are classed in
Touring 2. In the case of my MR2 Turbo, it was never competitive against
the Camaros anyway, and you couldn't raise the boost without also installing
a fuel cut defenser.
One option might be to require all forced induction cars to have a test
connection installed in the intake manifold. Then a boost sensor/recording
device could be installed to measure boost levels during actual competition
runs. The problem though, is what boost level do you consider illegal? If
it is greater than stock, it could be (or argued to be) due to a more open
intake and exhaust, which are legal. Also, some cars may have a momemtary
boost spike before settling to a steady state level so you may need to
record more than just peak boost.
Another option is to not allow them in SP. They can run in Street Mod.
Brad B.
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