I am amazed on how much better the stock pipe is !!!!!!!!!
by: skuttadawg - Dec 27, 2013 13:33:50 GMT -5
Post by skuttadawg on Dec 27, 2013 13:33:50 GMT -5
I bought a PM Tuning sport pipe and it would not line up on the 49cc engine . I put on a BBK and it lined up but the head bolts are such a pain to get to and I did not think the stovk pipe would line up . Once it got the PMT pipe off the stock one lined up perfect . I found it was easier to leave the bolts in place and wiggle the connect between them . I had a heck of time finding the hole the first attempt . The first time I put on the PMT it was so freaking loud that it reminded me of a Honda CR 80 . I thought it was the muffler not the pipe so I switched mufflers . It may have even been pitched higher since it had a smaller nozzle . I had lost bottom end pep but once the RPMs were up on came the powerband . I echo off of buildings , had my ears ringing and made many people jump and cover their ears .
On Christmas Eve I put the stock pipe on as my treat to my neighbors . One had given me 20 dollars to do it . It must be 40 decibels quieter and take off has the wow factor even with 8g sliders were most run 4 or 5g . Mid range is way more peppy . I can still hit 10,500 RPMs as I also thought it would max at 8K like it did when it was a 49cc . So my theory that the exhaust port was too small may be the reason for the 8x max . I had put on a racing CDI it made no diff on top end . it runs so darn good that I smile every where I go . It can still hit 50 MPH on the speedo but it is screaming so I know I will have to get a taller gear set and lighter sliders soon . What is crazy is that I can can go faster up a large hill with a running start than I can down it .
I now can feel the 1.5k Hoca clutch springs on take off as I spun out in the grass by accident from the start after the pipe swap . I do use the PMT muffler on it since it is black like the pipe and has a larger nozzle . Plus it looks like carbon fiber which is neato to me . It has a reed valve just before the expansion chamber but I taped it off . It is not as loud and runs better than when it was blowing out exhaust .
On Christmas Eve I put the stock pipe on as my treat to my neighbors . One had given me 20 dollars to do it . It must be 40 decibels quieter and take off has the wow factor even with 8g sliders were most run 4 or 5g . Mid range is way more peppy . I can still hit 10,500 RPMs as I also thought it would max at 8K like it did when it was a 49cc . So my theory that the exhaust port was too small may be the reason for the 8x max . I had put on a racing CDI it made no diff on top end . it runs so darn good that I smile every where I go . It can still hit 50 MPH on the speedo but it is screaming so I know I will have to get a taller gear set and lighter sliders soon . What is crazy is that I can can go faster up a large hill with a running start than I can down it .
I now can feel the 1.5k Hoca clutch springs on take off as I spun out in the grass by accident from the start after the pipe swap . I do use the PMT muffler on it since it is black like the pipe and has a larger nozzle . Plus it looks like carbon fiber which is neato to me . It has a reed valve just before the expansion chamber but I taped it off . It is not as loud and runs better than when it was blowing out exhaust .
