I have stock jetting, reed spacer, and took the snorkel off my airbox and my blaster runs great!

Now I need to know if i install a fmf fatty pipe is it absolutly nessacary to re-jet or will i just not be taking full advantage of the powergains? Also will it ruin my engine or I can ride it a few days then re-jet whenever.

 

well when i got my pipe and silencer for my blaster the jet they gave me to replace the stock jet didnt help, when i installed it it was loading up and runnin like crap so we too it out and put the stock jet back in and it runs great now, but just test it out and see how it runs

 

Odds are good that you will have to rejet.

Run stock jetting on an aftermarket pipe and worst case scenario, you run way to lean and fry your top end, now you are out the cost of a top end rebuild (maybe worse if crud gets thrown into the crank). Buy some spark plugs and do some plug checks, and jet as the plugs indicate.......A handfull of spark plugs and new jets (if needed) is a lot easier on the wallet then a new top end.[img]i/expressions/face-icon-small-wink.gif[/img]

 

I think im just going to get the whole thing tuned up at the end of the season.

 

well mine blaster doesnt run lean at all ive pulled the plugs on them and they aint no where near white but idk maybe i just got lucky but all ik is when i put the jet they called for in it it loaded up and ran like ****

 

When you start changing stuff with the engine, consider proper spark plug check to be cheap insurance.