Dr. D vs. PMB Spark Arrester
Posted October 10, 2005 - 11:48 AM
Posted October 10, 2005 - 12:22 PM
This is an unfair comparison. Inserts for stock mufflers are not designed to compete with aftermarket exhaust systems. They are for riders who want to boost performance of their stock system without the expense involved in buying a complete system.
I scored a great deal on a YZ450 pipe. I saw the recent thread on the Dr. D. S/A and quiet insert. Can anyone give me some insight to how it compares to the Pro Moto Billet set up. Will either pass the 96db sound test? I appreciate the help.
An insert costs between $40-50; an aftermarket system can cost hundreds of dollars. An insert gives a moderate boost in performance while maintaining the bike's overall characteristics; an aftermarket system can completely change the performance characteristics of a bike and should be matched to your riding style and preferences.
Most inserts are designed to meet the 96-98db tests. Not all aftermarket systems are. An insert will retain spark arrestor capabilities (if originally present) of the stock muffler. Some aftermarket systems have no spark arrestor.
Bottom line is that an insert is a cheap way to unleash some of the power choked off by the stock system, but it is no match for what a well-designed, properly matched aftermarket exhaust system can do.
Posted October 10, 2005 - 07:49 PM
Posted October 10, 2005 - 11:47 PM
Posted October 11, 2005 - 11:05 AM
Posted October 11, 2005 - 01:43 PM
Also, my son's stock '05 TTr125 was at 87db, which seems close to the stock WR insert.
Posted October 11, 2005 - 02:26 PM
Not trying to give you a hard time, or anything, just trying to have a base line to compare some of the inserts I see online to get a sense for how much louder the inserts are compared to my stock and baffled WR 450 pipe.
Posted October 11, 2005 - 02:41 PM
Posted October 11, 2005 - 04:03 PM
When I bought my 02 it does not have any insert. I would think this would increase power and noise but it really does not seem to loud. Or is the stock WR pipe still pretty quiet without the insert?
Posted October 11, 2005 - 08:27 PM
Posted October 12, 2005 - 01:08 AM
Unless they changed it, even on their website they call the QI for the 250 a 96db tip, but they just call the one for the 450 a quiet tip to lower the noise level.
I have it on my YZ and it definitely helps the noise level, but it's still pretty loud.
My impression of the PMB setup is that its made really nice and is worth the cash if you need/want an SA and the ability to lower the db's a little when you need to.
Posted October 12, 2005 - 11:44 AM
The point is the difference in db change in something quite, say 50 dbs to 52 dbs is hardly noticable. The difference form 87 dbs to 89 dbs is noticable.
Also, I would say the the TTR doesn't really rev compared to the WR. If I ride the TTR without a helmet It doesn't seem to get much louder, on the other hand the WR just keeps reving and getting louder.
Posted October 13, 2005 - 10:16 AM