QUOTE(SVT40 @ Jan 2 2011, 10:29 PM)
So, my engine now has a 62mm block / aftermarket valve springs / camshafts.
Do these/other engine components require
modification when replacing my current stock CDI for a racing CDI?
Or just plug and play?
EDIT: Or do you recommend a
carburettor before the CDI?
Some say the CDI is the most effective in bringing out the most of your big block;
others say the carb is it's best friend.
cdi change does bring out the most of ur big block because.. bigger block usually have more power and the stock cdi limits the power.... but limitation of the cdi is the Key to longer lifespan of ur engine.. =) lifespan = less maintenance
but of course this does not mean that u must use stock cdi.. buy a cdi that is adjustable.. =) but in ur case.. 62mm block, tune properly for top end power.. i bet ur bike need a koso meter already.. because finish meter easily in stock.. =) and then make u gila because the jarum kacau ur top speed.. only way is cut ur needle short..remove the yamaha logo in ur meter..
but according to other members here.. they recommend u change bigger carb.. bigger carb means bring in more air fuel for ur engine.. =)
but in my area, my foreman did not recommend to change carb, he says stock carb more than enough.. 61mm with stock carb can give stock meter hit 220km/h..
after all.. tuning a carb need pro foreman... tuning a carb is more difficult than changing bigger block... =)
just my 3 cent..

Added on January 3, 2011, 1:16 amsometimes i cant help it when i see other budak mat rempit trying to show off and drive fast2 in small highway just to tunjuk to his fren... KNN CCB wan ppl.. and worst thing is that..
when that fella going up a road that is slightly bump.. he willy his bike in 90-100km/h lc meter.. cilaka fella.. then sped off..
and 1 FUNNY thing is.. he wear a half shell helmet look like the arc raider II helmet type.. and carry a mini backpack.. like the one i saw in penang bridge doing superman stunt in rxz.. fkin retards...
see how that fella willy..
» Click to show Spoiler - click again to hide... «
This post has been edited by Aaron135LC: Jan 3 2011, 01:23 AM Attached thumbnail(s)