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Author Topic: 640Adv Jetting  (Read 288 times)

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Offline boosted gp

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  • Bike: KTM 990 Adventure
    Location: Gauteng
  • Posts: 195
640Adv Jetting
« on: June 20, 2008, 06:09:46 pm »
hey All,

I am not overly impressed about the performance of my bike, having had a 525exc prevoiusly, i mean it has power, Ijust feel it is not jetted right. maybe you guys can shed some light.

This is what I have done so far:

Akropovic Silencer
162 Main
Stock needle pos
Stock needle
Stock Pilot jet
Mixture screw 2.75 turns out
Immisions removed
EPC removed (as well as 2nd and 3rd gear switch)
stock airbox (snorkel fitted, no mods to the side of the box)

Bike pulls relatively well till about 4000 rpm. it feels like it is running very lean as you can hear the sucking, but its not pullying cleanly (holding back)

After about 4000 it pulls hard and fast.

i have heard some guys changing the stock 45 idle jet to the 47.5?

I live in JHB.

Any comments welcome

« Last Edit: June 20, 2008, 06:26:45 pm by boosted gp »
All Advice given without Prejudice. Boosted Performance, and any of its employees will not be held Liable for any damages or loss in any manner or form whatsoever. All parts sold carry manufacturers warranty and are intended for RACE use only

Offline Matroos (aka JJred)

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  • Bike: KTM 990 Adventure
    Location: Gauteng
  • Posts: 442
Re: 640Adv Jetting
« Reply #1 on: June 21, 2008, 12:38:55 am »
Boosted contact Freez (member) he has got a very nice load dyno set up. If it is a jetting problem he will be able to sort it for you in no time.