Carby Speed Carb or Performance Carb?

[skinnerman]

Hi! I ride my bike to work thrice a week (hour ride there and back) and I noticed that my standard carb SUCKS!

So I was wondering, which is better for my purposes (daily commute), the performance carb or the speed carb?

 

[butre]

a mikuni vm16 is the best bolt on for a stock engine. if you have am increased max rpm and/or increased compression a vm18 is even better

 

[crassius]

a standard carb is supposed to suck, otherwise no air will ever get into the motor

I only use NT (or NTTC, WH, or other NT clones) they work fine for most bikes.

What does yours do that is bad, and how did you tune it so far to fix that?

 

[skinnerman]

Haha very true casius!

I have the standard NT carburetor. I bought everything from bikeberry.com, and they have the

I tried asking my carb problems multiple times but got nowhere. When I let out full throttle the RPMs rev up for a few seconds, then they drastically decrease, then go back up again, and on and on.

Here's what I've already checked.

Fuel flowing well -- Check
Air filter clean - - - Check
Motor mounts tight - Check

Its a new carb!

 

[butre]

could be a really mild vacuum leak or sticking cable

 

[Fabian]

The standard NT carburettor works as well as any of the other carburettor options once it has been jetted correctly.