If anyone out there needs further proof that we as riders have more options today than any time in human history need only check out the Swamp Series exhaust from HMF to be silenced. Okay, sorry. Bad pun. Anyway, it really is true: Aftermarket exhausts have been around from the beginning but the concept of […] More »

Dear ATVC: If i take the silencer/ quite core out of the stock muffler of my 2007 Yamaha Raptor 700R SE, do I have to make any changes to air or gas flow? peslraptor Generally speaking, no, removing the baffle within your Raptor’s muffler shouldn’t require adjustment of the fuel & air ratios. In the […] More »

Dear ATVC: I’m building up my son’s Honda TRX90 with the following engine mods: Ported head, TBQ Race cam from Beatrice cycle and a 114cc cylinder kit With Flat top piston, stepped header pipe to stock muffler. Here’s the question; Do I run the stock carb and jet it up (I think it comes stock […] More »

There are certainly some advantages in the real world- namely saving you from having to make carburetor adjustments to compensate for things like elevation, temperature, humidity and modest modifications. Additionally throttle response across the entire RPM range is typically improved and fuel injectors are less susceptible to fuel varnishing that takes place during long periods of inactivity/ storage.

We know that electronic fuel injection is the future, but let’s be honest: hundreds of thousands of ATVs around the globe make use of the tried and true mechanical carburetor as the fuel metering option of choice. A well tuned carb can be every bit as efficient and capable as the more complex (and typically […] More »