Hey guys i just finished chaning my rear sprocket to a nice 24 toothed, added some speed and less torque but it works great.
I read alot about the tomos a55 muffler getting clogged up and not being good so i was wondering if bi-turbo or Technigas was better?
I like the look of Technigas but i dont think it comes in a tomos a55 streetmate size.
Any help would be appreciated so much!
Thank you :)
I changed my sprocket and put a Technigas pipe on my sprint. I heard that the technigas is the all around best pipe out there for the A55 right now. you might find the biturbo a bit cheaper though.
http://www.mopedshop.com/Moped-Exhaust-Systems-s/36.htm - bottom of the page is the pipe, cheapest i could find it.
http://www.mopedarmy.com/forums/discuss/7/63858/63858/ this link here says it should fit.
Biturbo all the way. Nice clean classy design, cheap, works great, and won't break off the Tomos mounting bracket. Although no aftermarket pipe looks really good on the Streetmate, IMO. The Streetmate is overstyled, and when you change something, it messes up the look. Peace. Jerry.
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tecnigas is a much better pipe. they are both cheap as hell and both will eventually break on you. however the biturbo has a very limited power band while the tecnigas have a very broad powerband. personally i recomend reshaping the stinger into a 1 inch less straight piece of pipe. it will give you even more top end and i noticed no loss in low end.
i used a small section of handlebars for the stinger. the pipe in the pic was not the final mod i went with. went a little shorter on the stinger and made it look better. just dont have a recent pic.
also, if your friends dont know anything about mopeds they might think your "classy biturbo" looks cool, however everyone who knows anything about mopeds will laught at you for being one more jerk with a tomos and a biturbo pushing 38mph.
even un modified it is a way torqier pipe and much better for city riding. if you want top end dont bi a biturbo. there are much better top end pipes.
dis-agreed!
i powder-coated mine a black texture to match.
i bought a bracket to match from 1977* and it was a quality made product, it wasent quite well fitting... so i had to weld somthing up neways. i think theyve got better ones now, but im am not positive.
ummm.... make sure you get the correct angled header when purchasing a pipe. i suggjest over the phone.~SABAT!
Whats that white plastic thing between the air filter and the carb? Peace. Jerry.
a silencer. i made it.
heres the post break>
it works real good, and it makes my bike silent. compared to the roaring loudness that getting rid of the stock air box was.
here are some others.
bros revival
my first ped 
now owned by my bro.
fun fun~SABAT! ill make you one if you want.
I keep saying it, my '08 Sprint with a Biturbo, 22 tooth rear sprocket, and the carb kit from 1977 goes 43 mph, on average, verified by GPS. I'm happy with that. it keeps up with traffic, so I don't have to ride in the bike lane. And nobody I know knows anything about mopeds, except what they've seen me with. I just wanted something I could cruise around town in the right lane with, without getting run over, and I got it. Peace. Jerry.
that flaccid k&n chode looks hilarious
hahah that moped rocks tho, before it burned thru 2 pistons, 50+
jerry i am very glad its working out for you dude. heres the thing though, i know u rebuilt your motor and bike and shit, but your "performance tuning" in the moped world consists of a biturbo and an upjet.
the dude was asking which one is better, you have only had the biturbo. not trying to be a dick but you have no idea which is better since you have only owned 1 of them.
Please don't rip on Jerry.
Heres my A35 Technigas
I know I have almost no experience with "performance tuning" which is why you never see me on that forum. But I was pretty impressed with gaining 13 mph in top speed with only a Biturbo, air filter, rejetting, and a smaller rear sprocket. My Sprint now outruns my Honda Metropolitan, which I think is really neat. Speed AND style. As for the 50mph + crowd, that requires a kit, and I don't want to go that far. Not yet anyway. Peace. Jerry.
so then what's the deal with the tecno bullet?
looks just like a biturd to me, but is it actually a biturbo?
yes and slightly better constructed, less prone to baffle blow outs and looks better.
the biturbo expansion chamber is pretty decent, but the baffle is a piece of crap.
ok looks like jerry got the carb kit, the new air filter and rejetted it and still cruise at 43. I did and spent alot less and cruise at 40. The two keys are change the sprocket to a 22 and put on a technigas pipe. If you treat it well and don't go offroading i dont see why it will break on you. I forgot to put on the exhuast gasket where it attaches to the engine head but ive had no problems. Also, doesnt rejetting reduce engine life by putting it under more strain?
no it gives it more fuel so u have more lubricants in the cylinder and so u don't top out cuz your jet can't give any more fuel to keep up :P (i hate MI right now i had to small of a jet in the winter now its to big :()
omg
omg
sorry mobile phone. drifter u have to upjet. not upjetting is what willdestroy the life of your motor. when you add more power, the engine sucks harder adding more air. gotta compensate with more gas or u will dmaged your cylinder.
Rejetting compensates for the leaner air/fuel mixture you get when you install a less restrictive air filter and exhaust pipe. Running to lean will destroy your engine. It seems most people here do "plug chops" to determine the proper jetting, but I've never figured out how this works, and didn't want to destroy my new engine from running to lean, so I cheated and used an exhaust gas analyzer to get the mixture the same after the filter and pipe were installed as it was stock. I have checked the plug several times, it looks fine, there is no sign of overheating, and it makes good power. Peace. Jerry.
or if your jet is to big u will just always run crazy rich and not get max performance and jerry it is simple u run at full speed for a little take out your plug if its black u r to rich if u r not seizing and its not black u r fine :P
hmm, well i never changed the air filter. It seems to be working, the engine just purrs along no whining or rattling. Because i changed the sprocket to a 22 the transmission speed and rpm's at full throttle havent changed much. Also prehaps i could add slighty more oil to the gallon when i go to premix next time.
Even with the stock filter, you will be running lean if you install a performance pipe, and don't rejet. A foam filter will make it even leaner, so you have to rejet richer. But with a foam filter and a pipe, you are getting a lot more air/fuel mixture in and out of your engine. Since you are moving more air, you need a larger jet to keep the A/F ratio the same. 2 strokes are very sensitive to proper air/fuel mixture, that much I do know. A 2 stroke will make the most power when it is right on the edge of being too lean, but I don't like edges, so I'd rather give up 1 or 2 mph, and make sure I don't burn a hole in my piston. It's a genuine Tomos piston. Peace. Jerry.
i appricate the advice but i think ill be ok. I could get the 1977 carb kit but it will only give me 3 more mph. The concern with running leaner is that the cylinder will not get enough oil/lubrication with every fire. To try to compensate ill add a bit more oil in my premix. I see you have that red airfilter hanging off teh side, wont that get all grimmy and clogged from dust and shit, what about in the rain..
i know someone with a tomos ST. If you upjet that it still wont change the amount of oil going into the engine (it has a technigas pipe on as well).
All I know is that I had a 1996 Targa LX, and it had a Technigas pipe, opened up piston, stock air box, and jet. It ran about 40 mph solid, it ran very reliable also, with great bottom end. The plug was always a coffee color, and I could put my hand on the side or top of the jug/head and it wasnt that hot.
Just thought I'd throw that out there
James
Btw, I could do touch and hold my hand on the head and jug, after I got back from a ride. Just to clarify.
James
drifter you arent getting it. this is not a suggestion. this is how 2 strokes work. its not an opinion. its HOW A 2 STROKE MOTOR WORKS.
if you upjet your motor will run better, faster and last longer. you can only run lean for so long. your cylinder and piston will develop hotspots and eventually you will sieze your cylinder.
but if you would like to believe that you have a magical engine that wont break keep at it, blow your shit up and then sell it to me for 5$
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