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Removing the catalytic converter
- Thread starter Dray
- Start date
PMK
Active member
I recently read on one of the Facebook groups that there is no catalyst inside the primary muffler. If that is the case, you are not altering the emissions. When you install the bypass pipe, the computer makes automatic adjustments and there is no codes thrown.
Simple plug, play, enjoy type of mod.
Others say it makes no difference, I disagree, the engine runs better, there is far less heat under the passenger and when I checked my MPG log, there is a definite documented increase in MPG also.
This is on a 2014 RTs
Simple plug, play, enjoy type of mod.
Others say it makes no difference, I disagree, the engine runs better, there is far less heat under the passenger and when I checked my MPG log, there is a definite documented increase in MPG also.
This is on a 2014 RTs
Chupaca
New member
As I see it...
Motorcycles are not required to have cat converters yet and this is only an advance move to keep epa happy. It is not ilegal yet and even here in CA they do not smog bikes. As a matter of fact they don't even safety check them. :yikes: removing it will improve engine performance as mentioned by Billybovine . You dump a lot of weight and allow better airflow reducing heat. Still if in doubt check your state regulation but if you ask you know they will say you shouldn"t. I would keep it in case at some date they do come up with "if it had it when purchased it has to be there and work".
Motorcycles are not required to have cat converters yet and this is only an advance move to keep epa happy. It is not ilegal yet and even here in CA they do not smog bikes. As a matter of fact they don't even safety check them. :yikes: removing it will improve engine performance as mentioned by Billybovine . You dump a lot of weight and allow better airflow reducing heat. Still if in doubt check your state regulation but if you ask you know they will say you shouldn"t. I would keep it in case at some date they do come up with "if it had it when purchased it has to be there and work".
robtdonna
New member
Can't speak to the 998s but have seen a pic of a 1330 primary muffler/cat off a 2014RT. It was cut open and there is no catalytic converter in it!
PMK
Active member
The internet no doubt is full of BS, the source I mention should be reliable based on it being from Pitbull Powersports. Personaly,it does not matter to me, we have been running a bypass for many miles with superb documented results.
All the best
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PMK
Active member
Agree, ours certainly has the increased power based on the Butt Dyno and how the power comes on and where it prefers to be shifted. I believe there is also the increase in midrange regardless of others saying it needs a baffle. As for the mileage, I have documented the fuel used and miles traveled for all but the first two tanks riding it home from the dealer. I know exactly the miles and date the bypass was installed and just recently compared the oem exhaust MPG to the bypass exhaust. Even with shift about 1000 revs higher, 4500 vs 3500, the bypass pipe got better MPG.
Installing the Yokohama rear tire and lower belt tension increased the MPG further.
SpyderAnn01
Active member
I believe the proper name for it is the Secondary Muffler as it isn't a true catalytic converter. I've got the bypass with muffler - ceramic coated black - sitting in a box in the garage and I'm anxiously awaiting installing it. This week I get new tires, rear wheel bearings and the new exhaust on my Spyder before we head out to Spyderfest.
SpyderCruiser
New member
Just to let you know. The brp factory service manual lists it as a catalytic converter.
Lamonster
SpyderLovers Founder
SpyderCruiser
New member
Yes, I saw that Lamont. That is why I said the SERVICE manual calls it a catalytic converter. I also remember a photo on this site of one cut open and it did indeed have a small catalyst inside. If you want I will post a photo of my manual stating they call it a catalytic converter. I don't make stuff up!
The catalyst is in in the inlet pipe going into the canister under the bike, the subject of this thread. It is a honeycomb structure about 3 inches in length. That is a typical construction in which the catalyst is coated on a heat resistant substrate. It needs to develop and retain heat to function properly.
Wayne
Wayne
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SpyderCruiser
New member
Here is the page from my manual calling it a catalytic converter. It is clearly labeled as part number 3.:yes:
No one is challenging what's in your manual. Go online and check the BRP website parts books. The item in the middle of this discussion in identified as Item#8, part# 707601881 Primary Muffler. So within BRP documentation it has been called two different names. Next question.
Wayne
Wayne
SpyderCruiser
New member
Found the photo of the inside of the primary muffler. It definitely has a catalyst inside. So the previous post I made from the service manual is correct. It is a catalytic converter. My Spyder is running very well with the bypass pipe and baffle.
Found the photo of the inside of the primary muffler. It definitely has a catalyst inside. So the previous post I made from the service manual is correct. It is a catalytic converter. My Spyder is running very well with the bypass pipe and baffle.
You didn't photoshop that did you?
Sure looks like a cat. Mystery solved. Now I have two trikes with cats. Guess I am going to need a litter box?
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cmarsala
Member
Cat or muffler or what ever
What difference does it make if it's a Cat converter or primary muffler, you want your bike to run better, faster and better MPG get rid of the converter and put in the Cat delete from Lamonster. I put mine in shortly after I got my F3, it 's one of the best things I done besides the BajaRon sawybar. It's all up to personal choice, it's a subject that can be debated till the end of time. Again just my 2¢ :doorag::doorag::riding:
What difference does it make if it's a Cat converter or primary muffler, you want your bike to run better, faster and better MPG get rid of the converter and put in the Cat delete from Lamonster. I put mine in shortly after I got my F3, it 's one of the best things I done besides the BajaRon sawybar. It's all up to personal choice, it's a subject that can be debated till the end of time. Again just my 2¢ :doorag::doorag::riding:
SteveandBelinda
Member
Where can one get the bypass pipe, how much, how hard is it to take out old system and put in bypass pipe, and will it improve anything on a 2010 RT?
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