Exhaust Mod?

[Snowdog]

Is there any real difference between the slip on exhausts? They vary in price by a couple hundred or so, depending on the model and vendor. I am not really worried about performance, but would like something more attractive and with a nice sound. Oh, and quality. Titanium, Stainless, which is best for longevity. Some say things like aluminum with titanium coating or carbon coating. I know that's a whole different can of worms, but I'd hate to spend money on something that in 2 years is going to look like crap.

Akrapovi?

BMW scooter exhausts | GPR Motorcycle Exhausts

Arrow Special Parts

Exhausts BMW - C 600 SPORT - - MIVV

http://scooterpartsco.com/bmw-scoot...-slip-on-exhaust-for-bmw-600-scooter-m3215629

All exhaust systems will look like crap eventually, no matter what they are made of. Your best bet is to keep polishing!! A coated system will get scratches and wear through spots which are tough to repair. I would stick to a stainless system for ease of maintenance ( read polishing).

The important differences in exhausts is the insides. Is back pressure reduced ? Will it increase performance? Do I need to check it on a "dyno" and make fuel adjustment? Ask the manufacture.

Personally, I think the stock exhaust is as good looking as any of the aftermarket one's I have seen. The only thing it lacks is a fancy aftermarket name in big letters. ------And it needs to be quieter!!

 

[Skutorr]

You should probably go with the Akra. It's EU-compliant for dB output, so it won't be louder, but will be deeper and not as harsh as the stock muffler. Arrows will DEAFEN you, and the MIVV's, GPR's etc. are also louder than stock and non-EU compliant. Owners in Europe have to keep the stock cans and swap them back each time their bike is inspected...a pain...

 

[grey.hound]

Thanks Skutor, that's what I wanted to know.

 

[bobhlu]

Hi Doraemon,
Just curious and I want to do the same thing removing the Cat,if I remove the the cat and change to a straight pipe does the engine backfire when releasing the throttle at highspeed?do I need to use a power commander or adjust anything like air and fuel mixture?Im here in Philippines and cheaper to cut and weld instead of buying a system,so im very interested on how to do but im afraid if i cut the cat and backfire will be the problem i cannot buy a new cat again sure this will be too expensive here.

 

[Snowdog]

Hi Doraemon,
Just curious and I want to do the same thing removing the Cat,if I remove the the cat and change to a straight pipe does the engine backfire when releasing the throttle at highspeed?do I need to use a power commander or adjust anything like air and fuel mixture?Im here in Philippines and cheaper to cut and weld instead of buying a system,so im very interested on how to do but im afraid if i cut the cat and backfire will be the problem i cannot buy a new cat again sure this will be too expensive here.

Changing your exhaust system will require fuel adjustments, engineers spend careers designing the pipes and fuel systems. It's not as easy as the "carburetors" of the old days.

 

[bobhlu]

Changing your exhaust system will require fuel adjustments, engineers spend careers designing the pipes and fuel systems. It's not as easy as the "carburetors" of the old days.

Hi Snowdog,Ok thanks for the info I was wondering if I remove the catalytic and using the original muffler would it help release the muffler sound a bit or would it increase power and give a bit speed at top end?my point also in removing the Cat is we dont require here emission her in Manila sucks and 1 more thing Cat weighs around 7kilos so i will loose weight for my bike,hahaha what do you think sir?I just want to know how did the bike ran without cat...if it runs the same without Cat and no backfire I can cut rather than buying a system.wat do you think?

 

[exavid]

One thing I always liked about my Goldwings. It was like having a giant electric motor, silent with boatloads of torque. I'd prefer not to hear any noise from the bike. The GL1500s with hydraulic lifters and belt driven cams had the least mechanical noise I've ever heard from a motorcycle. What the GT needs is a 650cc opposed six.

 

[bobhlu]

Have anyone of you already tried using Akra slip on and Arrow exhaust system?Anything you can share like what plyball I need to use?do i need to add weight or lessen?
or do I need to use power commander?or should i just cut the Catalytic out and weld a straight pipe same as doraemon to save on buying a system?

 

[Snowdog]

Ask the manufacturer.

Have anyone of you already tried using Akra slip on and Arrow exhaust system?Anything you can share like what plyball I need to use?do i need to add weight or lessen?
or do I need to use power commander?or should i just cut the Catalytic out and weld a straight pipe same as doraemon to save on buying a system?

The companies that make these systems can answer your questions, check their sites.

 

[bobhlu]

The companies that make these systems can answer your questions, check their sites.

Thanks......

 

[seraphtan]

You should probably go with the Akra. It's EU-compliant for dB output, so it won't be louder, but will be deeper and not as harsh as the stock muffler. Arrows will DEAFEN you, and the MIVV's, GPR's etc. are also louder than stock and non-EU compliant. Owners in Europe have to keep the stock cans and swap them back each time their bike is inspected...a pain...

Well, if you're into the sound, you can remove the little 'dB killer' on the Akrapovic exhausts to get an even deeper growl, and put it back on if you have an inspection coming up. At least that's what we peeps in Singapore do with the Akrapovic exhausts that come with some of our bikes.

Some even claim that it gives them a wee bit more performance with the 'dB killer' removed. Personally, I can't feel anything different with this 'butt-dyno' of mine.. =p

 

[coyok]

I have been running my scoot with cat out and mivv muffler. I put on the malossi header instead without cutting out the cat. So far it slightly improves during take off up to mid range. No backfire noticed so far. Top speed still remains plus improving the bike weight but not too significant. I prefer not to take out the dB killer as the sound notes still good to me though I am aware removing it would be nicer but that is personal to individual IMO.

 

[bobhlu]

Hi Coyok, using the malossi header did you adjust the weight of the plyball or change the springs? and sorry what is mivv muffler?yes cutiing out the cat is around 7 kilos.

 

[coyok]

Hi Coyok, using the malossi header did you adjust the weight of the plyball or change the springs? and sorry what is mivv muffler?yes cutiing out the cat is around 7 kilos.

Bobhlu
I still use the stock plyball and spring. For warranty sake, I am waiting up to this June only then I will be putting Dr pulley slider of 28gm plus it's guide. Hope that will further improve the start off and kid range. Mivv muffler is just like another after market muffler I.e akrapovic, arrow, SC project to name a few. It is to me the cheapest when I bought it almost a year ago.

 

[bobhlu]

HI Coyok,
Last last sir sorry for asking to many question,so for now as of your opinion which is better?bike running on stock muffler with cat stock header or bike running with after market muffler and header? did using after market muffler and header gain speed on low or top end or all stock is better? compared with the 2 settings which is faster at top end and which is slower on acceleration?because some say stock is better at top speed and acceleration,my bike is also under warranty so i wont alter the plyball and spring to avoid conflict with dealer they just allow me to use after market exhaust if i like,my bike runs 170kph topspeed hope to increase a bit at top end and i like to have a louder sound for highway driving without backfire offcourse,haha thanks for your response sir...

 

[exavid]

I'm surprised a shop wouldn't refuse to work on a bike that's had the cat removed. A lot of states now require the original exhaust system to be maintained to insure correct emission controls.

 

[coyok]

HI Coyok,
Last last sir sorry for asking to many question,so for now as of your opinion which is better?bike running on stock muffler with cat stock header or bike running with after market muffler and header? did using after market muffler and header gain speed on low or top end or all stock is better? compared with the 2 settings which is faster at top end and which is slower on acceleration?because some say stock is better at top speed and acceleration,my bike is also under warranty so i wont alter the plyball and spring to avoid conflict with dealer they just allow me to use after market exhaust if i like,my bike runs 170kph topspeed hope to increase a bit at top end and i like to have a louder sound for highway driving without backfire offcourse,haha thanks for your response sir...

It is quite subjective to say which one better. I prefer the cat out with aftermarket header and muffler for the weight saving plus bit punchy during start off and mid range. That is the glaring difference I get at least to compensate the gain i have been enjoying when I rode sport bike years before. It is up to individual preferences IMO. Wish you best of luck!

 

[bobhlu]

It is quite subjective to say which one better. I prefer the cat out with aftermarket header and muffler for the weight saving plus bit punchy during start off and mid range. That is the glaring difference I get at least to compensate the gain i have been enjoying when I rode sport bike years before. It is up to individual preferences IMO. Wish you best of luck!

Thanks Coyok...

 

[Snowdog]

I'm surprised a shop wouldn't refuse to work on a bike that's had the cat removed. A lot of states now require the original exhaust system to be maintained to insure correct emission controls.

I am not, When something goes wrong, customers can be quick to assign blame on the garage, even though they had nothing to do with the cause of the problem. Example, garage adjusts valves, valves burn causing low compression due to improper back pressure from no catalytic converter, customer blames garage for burnt valves even though customer took the converter off.

 

[Skutorr]

Here are the two available brands that supply pipes replacing that horrible square, rattling cat; Malossi and Arrow. Very similar designs...