I have a 2000 Trailblazer 250 and have drag raced it a couple of times in the past few months. The first time I run 41 MPH. and after that race I put on a DG exhaust system and raced again and this time I run 37 MPH. The next race is in 2 weeks and I need to know if there is anything I could do to get my speed back to normal or faster? Thanks.

 

did you jet it?

 

no I have not jetted it yet. I have been trying to find what size jets to put in it. I alos thought about a clutch spring. Do you know what size jets or what color clutch spring to put in?

 

You will have to jet up a step or 2. You are leaning out the mixture by not doing so. This is why your speed is sufferning.

 

ya like he said you need to jet it what we do for a dirtbike is run it out to third gear and kill it and look at the plug if its white your running lean if its Black or wet thats rich you need to get it a brown color i dont know how you would go about checking it but the plug color still applys