best power mods for 2003 grizz 660 ??????
 

guys i need some more power out of my grizz, please give me some advice on what pipes are best, air and jetting mods, etc. i would also like to NOT void my yes warranty, ya know how yamaha can be. thanks

best power mods for 2003 grizz 660 ??????
 

ttt

best power mods for 2003 grizz 660 ??????
 

Is loudness an issue for you?

~HoundDog

best power mods for 2003 grizz 660 ??????
 

not really.

best power mods for 2003 grizz 660 ??????
 

The HMF, White Bros R4, and Pro Circuit T4, are all favorites around here... However, they are VERY loud. They also deliver the most flow and that is what you need to bring that 660 alive. None of them will void your warranty. You will also need a K&N filter and to rejet. I recommend putting a pro-flow kit on to adapt your airbox to a clamp-on filter system. It's much safer for your engine.

~HoundDog

best power mods for 2003 grizz 660 ??????
 

Ditto!!

HMF, Airbox lid removed and rejet to Mikuni 180 Main.

She'll rip a ton harder than a stocker. Want a boatload more torque, get a Wiseco 11:1 piston.

Now, if SOMEBODY would develop a damm new ignition we'd have Raptor like power.

best power mods for 2003 grizz 660 ??????
 

grizzlys are friggin beasts, why do u need more power they got lots of hp and tons of torque

best power mods for 2003 grizz 660 ??????
 

, why do u need more power they got lots of hp and tons of torque[/quote] what are you a girl????

best power mods for 2003 grizz 660 ??????
 

can i get a little more help?

best power mods for 2003 grizz 660 ??????
 

How much power do you want... Or should I say, how much can you afford?

~HoundDog