Hey, just bought a 2007 NRG Power DT, it came with the factory exhaust which is appalling to look at and is really restricting. i was looking at buying a Gianelli reverse as i have done a bit of research and they appear fairly good. i also heard that you have to do upjetting hock:? and change the rollers?!? Can anyone give me a bit of advice? Thanks x
this a top rated exhaust and it's chromed. http://www.scooter-center.com/scowe...IAGGIO_NRG50POWERDT&category2=CAT:CAT_AUSPUFF look at it's rating...... http://www.scootershack.co.uk/sportexguide.html
any sports pipe that actually does something, will need upjetting and a drop in roller weight....more than likely stiffer clutch springs too.... The giannelli reverse is a good pipe, so is the Doppler S3R, and The laser x-pro
replacing the main jet in the carb with one of a larger size, normally a good pipe will require a 5% larger jet.
Nope, you will have to buy a box of jets and roller weights then its a case of trial & error to set it up correctly. You can't just bolt on performance parts and expect them to magically give extra power. Fitting a pipe changes the way your engine behaves, so the jetting and transmission needs setting up to suit.
if your just fitting a sports pipe, check what size your main jet is, then order a 5% bigger jet from any of the scooter tuning parts retailers