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06-16-2017, 09:50 PM
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#1 |
 Join Date: May 2017
Location: Norfolk, VA
Posts: 531
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Almost forgot. You mentioned the EGR system. Please note IF it plugs into the exhaust for final waste removal, and you muffler has a catalytic converter in it (usually obvious from having weird heat shielding plates on the exhaust) DO NOT bypass it. Bypassing it will NOT give you more power! The Cat needs air to fully work, and that is what the piping provides. If bypassed the Cat will actually RESTRICT flow and act like the exhaust is clogged, making top end mushy and weak. Some EGR valves just dump back into the airbox. I have also seen some that dump into a "catch hose" that needs to be drained every now and then. Just know what you have first if you plan on bypassing it.
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07-01-2017, 09:17 AM
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#2 |
 
Join Date: Jul 2011
Location: Connecticut
Posts: 493
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Can't run a stock air box.
Can't hit WOT+black plug= far too rich. Install an open-element filter and block off the egr port.
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2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats. |
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07-24-2017, 04:39 PM
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#3 |
 Join Date: Jun 2013
Posts: 14
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thanks all,
so still haven't given the nitro 50 more thought, but i did start it up recently and it still smokes pretty bad - really thinking the rings are shot. on the nitro 150 front, i have this random issue where on decelerating from a constant 60 kph to slow down, i get a random "backfire". Only happens sometimes... thoughts? thanks! |
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07-25-2017, 01:04 AM
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#4 |
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Join Date: May 2017
Location: Norfolk, VA
Posts: 531
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Big difference between a backfire and a miss BUT if it makes you feel any better every single cylinder (thumper) vehicle I have ever owned misses/backfires/sputters or other weird noises when slowing down. Mostly 4 strokes 125cc and up that use carbs, but my Burgman 200 does it and its EFI. Don't sweat it unless it gets really bad/constant, thats usually a sign of a air leak in the system (Honda Helix carb mount comes to mind).
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