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 New pipe. No more bottom end power. 
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Joined: Sat Aug 05, 2017 8:39 am
Posts: 20
Location: Arroyo Grande, CA
scooters and mods: 2005 Zuma, 70cc kit, re-jetted carb, dual headlight mod
Post New pipe. No more bottom end power.
So I just installed the Gianelli reverse exhaust pipe and the 5g rollers that came with it (had 7g previously that came with my NCY CVT kit) and the increased top end power is great but the bottom end.....is lagging tough. Scoot used to take off like a banchee before the pipe. Do exhausts really affect the low end that much or am I missing something?

BBK (came jetted for this from original owner), NCY transmission kit (5g rollers and 105mm clutch), Gianelli Reverse pipe


Fri Jan 05, 2018 4:21 pm
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Joined: Thu Mar 20, 2008 5:27 pm
Posts: 14863
Location: portage wi
scooters and mods: 08 zuma dual headlight tmod rally kit cutom red paint koso mirros red anodized trans bolts
Post Re: New pipe. No more bottom end power.
Couch to springs need to be stiffer you changed the power band with the pipe so it doesn’t make power till higher rpms

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2008 zuma dual headlight mod koso mirrors liquid cooled polini corsa kit leo vince zx stage 6 variator rally kit custom red paintFUEL INJECTEDsoon to be 100cc
2008 stella olive custom ported 177 cc kit dechromed ford tear drop tail light alive and breathing and awaiting cosmtic surgery thanks to an trump cager
1985 elite 150 how long can i leave it stock


Fri Jan 05, 2018 6:00 pm
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Newb
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Joined: Wed Jun 10, 2015 4:55 pm
Posts: 17
Post Re: New pipe. No more bottom end power.
I am experiencing the same thing, granted I went from a stock pipe to a C16. You are saying a Contra spring would help? Or do I need some different clutch springs?


Fri Feb 09, 2018 2:27 pm
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