VINTON, Iowa ­– A word to the wise if you’re even thinking about using an altered rev limiter or competing with chemically treated tires in IMCA this season: Don’t.

Penalties for either infraction have been upped to $1,000, plus a 30-day suspension and the loss of all IMCA points. That change is the biggest in 2016 general rules and procedures announced and posted on the IMCA website this month.

“These are significant penalties, on par with an engine claim refusal,” IMCA President Brett Root said. “Both would have resulted in $250 fines and suspensions last year so this is obviously some­thing we are taking very seriously.”

Rev limiters are used in the Modified, Late Model, Stock Car, Hobby Stock and Northern and South­ern SportMod divisions.

The penalty for using chemically treated tires apply in those classes as well as the Sprint Cars and Sport Compacts.

While the rev limiter penalty can be imposed following discovery at a local track, the tire penalty would only be assessed after samples are tested at the laboratory contracted by IMCA.