MPH in the 1/8mi.
Thread Starter
Instructor
Joined: Apr 2001
Posts: 199
Likes: 0
From: Guyton, Ga.
MPH in the 1/8mi.
I increased my MPH from 83 to 87 MPH by jetting up four sizes in the secondarys but my ET stayed close to the same 8.4X with not much traction on street tires. What is this increase telling me? I need someone to explain. By the way I finally bought some BFG DR's to try out wed. nite
Race Director
Joined: Dec 1999
Posts: 11,095
Likes: 990
From: Sierra Foothills CA
Re: MPH in the 1/8mi. (MCAF84)
The increase in MPH tells you that you're making more horsepower. The fact that it happened when you increased jetting indicates that you were running on the lean side prior to your change. Most tuners will recommend going up 2 jet sizes at a time on all four corners when trying to dial in jetting.
Once you can get better traction your ET should show the improvement that the increased power can bring.
Once you can get better traction your ET should show the improvement that the increased power can bring.
