need help with modification

[sk8_vocal]

Guys i need help...my engin is all stock except i just took of my air box and changed into a simota power filter and a GPR streetfight exhuast...but my top speed drop for 140km to 100km..what should i do? pls help me...

 

[naati]

tune it..heheh

 

[sk8_vocal]

Tried already brotha...dont know why?

 

[express unlimited]

maybe your exhaust is designed for modified engine and not to stock engines. upgrade your CDI to attain higher top speed.

 

[naati]

vocal..!! tell us the detail........ hw u tuned it?

 

[sk8_vocal]

HAHAHA...i reall dont know how to tune it always send to the shops to tune? anyone can teach me? hahaha? now my top is only 120km...my stock was 140km last time man shit balls...

 

[romkazoo]

140kph? our stock here in phil is only 110 to 115kph...

 

[sk8_vocal]

damm...yap my stock in singapore was 140km when i bought it..seriously bro...

 

[pugo08]

http://en.wikipedia.org/wiki/Yamaha_Y135LC

there's a big difference in our speedometer reading, (from what i have read.)

 

[express unlimited]

so the top speed is actually 30% higher than the actual speed in malaysia.

135LC speedometer (km/h) 90.0 100 110 120 130 140 150 160 170 180
135LC Actual speed (km/h) 69.4 77.0 84.8 92.4 100.2 107.8 115.6 123.2 131.0 138.6

so if the top speed of the bike is 140km/h, the true speed is just 107.8km/h.

 

[rodds_16]

http://en.wikipedia.org/wiki/Yamaha_Y135LC

there's a big difference in our speedometer reading, (from what i have read.)

ohh..very nice info..tnx