Yamaha Starbike Forum banner

1 - 16 of 16 Posts

·
Super Moderator
Joined
·
4,515 Posts
Should not have too unless you go with a high flow intake. All exhaust have a certain amount popping on decel, you just don't hear it with stock exhaust as it's muffled.
 

·
Super Moderator
Joined
·
6,019 Posts
Les is correct, you can change out the stock air filter with a k&n and still not need a FMS unit.


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
691 Posts
Engines backfire even with the stock mufflers you just don't hear it unless you really listen hard because they are more muffled.

Reinhart states that you don't need a tuner if you are just repacing the slip on mufflers with their slip on mufflers, Reinhart mufflers are louder than stock so you will hear the backfires more with them.

Many companies will push you to purchase a tuner because todays engines are set up to run lean to pass emissions and what will happen is the chrome of an aftermarket slip on muffler may get some bluing from the lean condition, so they want you to get a tuner to richen up the mixture and that cures the chrome bluing issue for their product.

It is not that the engine itself really needs the tuner just because you changed the mufflers it is all because of the bluing issue and that is their way of curing it.
 

·
Registered
Joined
·
691 Posts
Should not have too unless you go with a high flow intake. All exhaust have a certain amount popping on decel, you just don't hear it with stock exhaust as it's muffled.
Even a high flow intake does not mean you have to get a tuner, an engine is only going to intake as much air as it needs so unless that stock intake was really choking the engine that engine is not going to ingest any more air than it did with the stock intake. The cams are going to be your biggest effect on how much air the engine will ingest depending on how much lift and duration was designed into the cam.

Tuners do one thing, they allow you to richen the air fuel mixture, todays engines all run very lean in order to pass federal and state emissions standards. A tuner will allow you to adjust the mixtures through the RPM range an even for each gear if you have a dyno. Having said that once you adjust the mixture you will no longer likely pass any emission test or standard, the engine will run better because you are feeding it more fuel.

Again unless the stock intake was really choking the airflow the engine is not going to ingest anymore air with a high flow intake vs a stock intake.

Most stock intakes these days are pretty free flowing so unless you are changing out the cams and doing other performance work the stock intake should be fine, the slip on mufflers will be for sound to satisfy your tastes.
 

·
Registered
Joined
·
43 Posts
Discussion Starter #12
Haven't made a decision yet. Leaning toward the Cobra because the volume of noise can be tuned down if it is too loud. I don't want a very loud muffler, just a deep throaty sound. Had a Roudhouse on my 950 and loved it. Sadly Roudhouse is out of business. Do you have any recommendations?
 

·
Registered
Joined
·
19 Posts
Nope. In the same boat though, just want something that sounds better, not a ton louder. I guess I haven't even looked into it enough to know you could do something, presuming relatively easily and without that much more expense, to quiet it down a little if desired. How soon do you think you will be making the decision? I'm just getting back into road riding, have an ATV and dirt bikes but plan on being more of a fair weather rider and the weather is turning cool quickly here in the northeast. Low 70's yesterday so played hookie from work and got out for an hour or so but opportunities will be getting fewer.
 

·
Super Moderator
Joined
·
6,019 Posts
When I originally went with a cobra slip on, great sound and not too loud or distracting, install time was a total of 28 minutes. Swapped it out in the driveway!


Sent from my iPhone using Tapatalk
 
1 - 16 of 16 Posts
Top