Soooo.... Anybody have an after market exhaust pipe?

[NeoGenesisMax]

Nobody seems to be posting anymore, lol.  Never thought I'd see Stig go this long without posting.  I guess now's a good time to ask if anyone has added any performance parts, besides weights, to their Like 200i?

[Stig / Major Tom]

Pls click on Stig, then recent posts.(I'm always talking too much here)
Don't think too many will spring for these after market pipes.
I have never read a sustainable account of a street 4 stroke getting much from an aftermarket pipe.
Sounds like if you want some extra zip - with perhaps a price to pay in longevity - then sliders and mucking about with the clutch and variator give the most noticeable changes.
Mild possible engine improvements might come by  lighter synthetic oils and 93 octane, and an Iridium plug.
Better handling by improved tires.
There is a pleasant ground swell at present in sticking with stock Kymco parts on a Kymco engineered product!
(belts, brake pads, variator parts)
Adding LED's seems a popular move.
I honestly am beginning to think that the LIKE 200i is a very solid appliance for the road - but does not lend itself to aftermarket performance -mproving parts which are avail. in the USA. I think we own a 4 dr Chevy Impala, rather than a Camaro SS.
To repeat myself - if you need more "go", buy a bigger scoot; because there are no cheap, proven, turbo helps within our shores!
Or, you can do what the teens are doing. Get a Honda Civic and put a fart can on it. Doesn't do anything but irritate the heck out of older folks! There being some small value in that.....admittedly.
(ie: drill holes in your stock pipe ?)
Stig

[91cavgt]

GPR does make an aftermarket pipe for our Like 200i models and they claim a 2.5 hp increase in power, which is a rather large amount considering the 163cc motor only makes just over 11 hp in stock trim. 

I was planning on getting this pipe and installing it a month ago, but life happens.  My truck broke down and I had to spend that money getting it back up and on the road. 

Stig is right in that typically, a pipe on a 4 stroke single cylinder motor doesn't do much.  But if you look at the exhaust outlet on the stock pipe, it is TINY and HAS to be restricting exhaust flow at high rpms.  However, I believe it also helps to give the great mid range power this scoot has by keeping the exhaust velocity high.  So, it appears as though the GPR exhaust will greatly help on the top end, but it will most likely slow the scoot down in the mid range. 

[tclhb]

I'll agree that it is a small exit, but our engine is small. When you consider that a typical 4 cylinder car engine is 2000cc, that's 12X our engine displacement. Maybe our exhaust isn't so small.
I've replaced the exhaust on different cars I've owned. Mustang Cobra, Chevy Corvette, Nissan 350Z (ugh, what a terrible car that was), and never got a noticeable performance gain in any of those. Be skeptical to those hp gains, and you will be smart. Now if you are doing it for the sound, that's entirely different.

[Vivo]

Scooter "Performance" Exhaust pipes will not give much improvement alone but may contribute a little bit to your overall engine modifications... emphasis on 4 stroke scooter engines... different story for 2-strokes...

[91cavgt]

I'll agree that it is a small exit, but our engine is small. When you consider that a typical 4 cylinder car engine is 2000cc, that's 12X our engine displacement. Maybe our exhaust isn't so small.
I've replaced the exhaust on different cars I've owned. Mustang Cobra, Chevy Corvette, Nissan 350Z (ugh, what a terrible car that was), and never got a noticeable performance gain in any of those. Be skeptical to those hp gains, and you will be smart. Now if you are doing it for the sound, that's entirely different.

For reference, my brother had a Honda Elite 80cc scooter, and it's exhaust outlet was the same size as the one on our Like, even though the motor is twice as large! 


It is difficult to equally compare an automotive 4 stroke motor to a single cylinder scooter 4 stroke motor when it comes to the exhaust because they are very different in the nature of how the exhaust acts.  With a single cylinder motor, you have lots of distance between the waves in the exhaust compared to a multi-cylinder motor.  In a V8 motor, you have 8 pules per 720 degrees of crank rotation but a scooter only has 1 pulse.  Not only that, you have a motor that is run at very high rpm vs. car engine.  A typical car engine is only going to rev up to 6k-7k rpm, but most of the time it will be around 2k.  A scooter engine is going to rev up to around 9k-10k and typically be around 6k.  Automotive exhausts are not designed for peak power increases.  They are designed to give the best power band since the engine is going to be used over a wide rpm area.  A scooter however, the engine's power band is not as broad as a cars so a manufacture can develop an exhaust that is geared more towards maximum peak power which is what most of them do. 


I have dealt with a few single cylinder engines and had a single cylinder 250cc Suzuki Ozark that had 15 hp stock, and then after adding a pipe and tuning the carb for it, it had 18 hp.  So that is a 3hp increase.  Like I posted above though, the low end torque did suffer because the pipe manufacture designed the pipe for maximum power, not useable powerband. 


Take a consideration of this too.  Modern cars have pretty free flowing exhaust systems from the factory so there is not much to be gained from an aftermarket exhaust.  The exhaust systems on cars are so much bigger and longer than what we have on scooters which makes it possible to design a quiet exhaust that is also free flowing.  If you were to take a car from the late 70's to early 80s and put a free flowing exhaust on them, you would see a pretty substantial power increase from the cylinder head to the tail pipe.  A scooter is similar to this.  The exhaust is not designed to produce maximum power from the factory thanks to bean counters.  It is designed to be quiet and too tame the high pressure pulse.  If you are not concerned about keeping quiet, you are able to uncork the exhaust and free up a decent amount of power.   

[Vivo]

[cochi]

Vivo, that's a nice looking exhaust. The header pipe looks to have a substantially larger diameter than the one on the Like. Do you know how it performs and who makes it? I would like to uncork mine a bit. 91cavgt is right on the money about loosing some low end torque. However, if the system is designed well this could be kept to a minimum and there could be gains in the middle and upper rpm ranges. It would be neat to see some dyno curves with that pipe. Thanks. cochi

[Vivo]

Hi Cochi, the brand is Asia Power Pipe.. I don't really know if it's available in your place... People here say the pipe performs good but a bit loud....

[91cavgt]

Is that for the 125 or 200 model? 


I ask because if it is for the 125 model then it does not have a bung in the pipe for the O2 sensor. 

[cochi]

Vivo, thanks for the info. I'll ask the fellas at the scooter shop where I bought the Like if they know anything about them. cochi