Indiana Open Wheel - Bloomington muffler rule

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Rone9r

8/29/19 10:20 PM

Bloomington muffler rule

What’s the muffler rule on Bloomington speedway 410’s??

Dirtfan

8/29/19 10:41 PM

From 2015?

RLV4104 are the approved mufflers for all classes with exception of Run what you brung class.

nonwing77

8/29/19 11:32 PM

Re: Bloomington muffler rule

Don't believe you need any this season.

Rone9r

8/30/19 3:10 PM

Confirmed with AJ Bowlen. You are correct, no muffler rule.

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