BrandonF30 Posted July 8, 2022 Posted July 8, 2022 New to autocross and unsure what class I fall into, thanks for any help in advance!! 2013 bmw 328i -bootmod3 stage 1 tune -bootmod3 8 speed DSG sport transmission tune -resonator and muffler delete -H&R super sport springs Quote
freakin_elrod Posted July 8, 2022 Posted July 8, 2022 https://www.scca.com/downloads/60877-2022-solo-rule-book-1/download 1 Quote
civil Posted July 8, 2022 Posted July 8, 2022 11 hours ago, BrandonF30 said: New to autocross and unsure what class I fall into, thanks for any help in advance!! 2013 bmw 328i -bootmod3 stage 1 tune -bootmod3 8 speed DSG sport transmission tune -resonator and muffler delete -H&R super sport springs Looks like you fall in DSP(D Street Prepared). Use what Sid posted though to double check. Street Prepared rules start on Page 98. 1 Quote
cgroppi Posted July 8, 2022 Posted July 8, 2022 I think actually the car is legal for STU as well. The engine and transmission tune are legal there. 1 Quote
BrandonF30 Posted July 8, 2022 Author Posted July 8, 2022 3 hours ago, cgroppi said: I think actually the car is legal for STU as well. The engine and transmission tune are legal there. The engine tune jumped me up boost from 16-22psi. Does adding boost still keep it legal for STU? Quote
freakin_elrod Posted July 9, 2022 Posted July 9, 2022 (edited) 2 hours ago, BrandonF30 said: The engine tune jumped me up boost from 16-22psi. Does adding boost still keep it legal for STU? Upping the boost doesn't matter as long it's from the result of the tune and not mechanical, i.e. no external wastegate, manual boost controller, etc. Tunes are very difficult to police so it's pretty much whatever, unless of course you are running a tune that isn't pump 91-93 ish, but e85 or similar. Then that would bump you out of Street touring entirely unless flex fuel was an OEM option out of the factory which I don't believe your BMW would fall under. Edited July 9, 2022 by freakin_elrod 1 Quote
BrandonF30 Posted July 9, 2022 Author Posted July 9, 2022 29 minutes ago, freakin_elrod said: Upping the boost doesn't matter as long it's from the result of the tune and not mechanical, i.e. no external wastegate, manual boost controller, etc. Tunes are very difficult to police so it's pretty much whatever, unless of course you are running a tune that isn't pump 91-93 ish, but e85 or similar. Then that would bump you out of Street touring entirely unless flex fuel was an OEM option out of the factory which I don't believe your BMW would fall under. Ok so I could run in the STU class. Thank you Quote
Kim Kemper Posted July 10, 2022 Posted July 10, 2022 - resonator and muffler delete not sure what impact that has on the car’s exhaust sound level but assume you are aware that AMP has DB limits of 92 on the skidpad Quote
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