After reviewing the data provided by on-track results from POWRi Illinois SPEED Week and other events this year and comparing that data to information from the races earlier in the season prior to the current rev limiter rules, POWRi Lucas Oil National Midget Series officials have decided to make a change.

Effective immediately, POWRi will be going back to the previous rev limiter rules.

Gathered data has shown that with the two major types of engine designs, push rod engines and overhead cam engines, the rev limit rules have impacted the performance and slanted the table against the overhead cam engines.

The present rules have not affected the push rod engines as much as the overhead cam engines because the push rod engines’ power curve is broader and comes in at much lower RPM range. On the other hand, the overhead cam engines have a narrower RPM range and work better in the top range.

“We thought this rule was a step in the right direction,” said POWRi owner Kenny Brown. “After reviewing the data, we realized it was not. The goal of implementing these rev limit rules was parity, to ultimately save money for car owners with increased time between engine maintenance cycles, and to welcome lower cost alternatives to current engine platforms. But it has become apparent over the last month of racing that the rev limit rules never actually accomplished this. We made a mistake heading in this direction and therefore, POWRi is going back to the previous rev limit rules.”