Speaking with Steve O, when running the motor in a truggy with a 7mm restrictor, I should expect 7.5 - 9 minute run time. I could get about 45 seconds more by going to a 6mm, but the overall power would be reduced.

I don't have a ton of experience with Jammin pipes, but all of the top drivers I've spoken with have told me the same thing....great pipes, but mileage suffers.

Anyway, my run time estimates are likely to be a bit on the low side since I try to never run my tank bone dry. I did however, try the mileage test that Steve explained to me. It goes as follows...

- Get the engine up to operating temp, and tuned appropriately for the conditions.
- Fill the tank and start the timer.
- Run 5 minutes at race pace and shut the motor down.
- In a truggy, with 7mm restrictor, if the tune is correct, the fuel level remaining in the tank should be just below the half way point. If the fuel level is way lower than that, the tune is off.

I was just a tad under the half way mark at the end of my 6 min. heats yesterday, so I'm sure I could have gotten more than 7.5 minutes run time, including what was in the filters and lines...