how loud can a quad to still be able to still get in to the mounds and silverlake?
http://www.ebay.com/itm/DG-Performance-Slip-On-Exhaust-Muffler-03-4170-for-Yamaha-YFM350-Raptor-05-11-/270973827041?pt=Motors_ATV_Parts_Accessories&hash=item3f174c77e1&vxp=mtr (http://www.ebay.com/itm/DG-Performance-Slip-On-Exhaust-Muffler-03-4170-for-Yamaha-YFM350-Raptor-05-11-/270973827041?pt=Motors_ATV_Parts_Accessories&hash=item3f174c77e1&vxp=mtr)
will this be too loud
IDK about silver lake, there pretty strict and they will stop you and measure the DB's, but at mounds there seems to be quite a few guys out there with some real loud exhaust and yes some running without spark arrestor. Ive never seen em pull out the DB meter at the mounds, there pretty lenient there I guess it all depends whos working the gate, and how much of an ass they want to be loll
This is straight from the DNR website
(a) Vehicles shall be equipped with a muffler and spark arrester containing baffles, shall meet the muffler and spark arrester requirements specified in subsection (g) of section 81133 of Part 811, Off-Road Recreational Vehicles, of the Natural Resources and Environmental Protection Act, Act 451 of the Public Acts of 1994, being Section 324.81133 (g) of the Michigan Compiled Laws and shall successfully pass a muffler and spark arrester baffle test. A vehicle shall successfully pass a muffler and spark arrester baffle test by preventing passage of a flexible, plastic rod,no larger than 3/8-inch in diameter, through the muffler and spark arrester when inserted through the exhaust outlet and/or visual inspection.
(b) A maximum noise level of 94 Db(A), or the current EPA emissions limit, shall be met. The testing provisions of current SAE J 1287, June 93 standard for ATV and motorcycle vehicles and SAE J 1169, March 93 for all other vehicles shall be followed and all vehicles shall pass a stationary sound level test. The stationary sound level test shall be administered from a 0.5 meter (19.69 inches) distance at one-half the engine's maximum rated RPM and as further described by current testing provisions for the particular vehicle.
Which means you would have to have a tach right?
90db
Quote from: J.C. on August 29, 2012, 01:21:23 PM
Which means you would have to have a tach right?
Nope, they either go by the tachometer reading or point of "half throttle"
i seen some loud ass quads at the dunes how do they pass
they test at random usually if its in the bed of a truck they just check for sparkies and let us go
everytime i take my quad to the mounds it gets a sound check, they test to 98 decebils and mines is at 106.
end up opening my race pipe and adding some packing to the muffler which is go to get in and 15 minutes later it's loud again but don't say anything once
you're in and go slow thruough the parking lot.