Vtec fuelling/throttle control problem - a new hope.

[Ed_Case]

Originally Posted by Monkey Butler

First of all I must attribute the suggestion to someone from another forum found by googling randomly - johnny.chadda.se
The fully reversible "pair, flapper and snorkel mod":
1. lift tank and disconnect the pair control valve twin plug connector located at the rear of the air filter housing. Protect plug and socket as appropriate
2. disconnect the vacuum hose from the air filter housing intake system diaphragm unit. Plug the hose and the diaphragm port as appropriate. Secure the hose to prevent movement.
3. remove the soft rubber snorkel at the front of the airbox. Keep it somewhere safe.

Not being a mechanic myself, I work on the principle that if a part is there, then it does something necessary & removing it may cause another problem elsewhere (perhaps not obvious at the beginning). Is there any update on this mod Monkey Butler?

[Ian Daly]

Originally Posted by Ed_Case

Will this not affect the MOT emissions readings/regulations?

Bikes aren't emission tested, are they

Ian

[Ed_Case]

You're right, just checked, it's only the condition of the whole system & BSAU stamp that is required, no emission check, (probably only a matter of time though) silly me, should have checked before posting not afterwards..

[kaldek]

Hi folks,

I posted a couple of months ago about testing vacuum dampers. Anyway, the short answer is it's not a good idea. The long answer is my problem which I was twiddling with vacuum dampers to dix was ACTUALLY stuffed and fuel injectors which were leaking. Pretty much every test I did after that was a waste of time with invalid results until I had the injectors replaced (with units from an '06 model).

I tried a factory vacuum damping chamber from a Suzuki DL-1000 VStrom, and it made the bike stall because it not only damps pulses but also restricts flow and causes lag in the data getting to the MAP sensor. Pulling up at a quick stop with the clutch in would cause the bike to either stall or almost stall. Not good!

Having said all this, my '02 running '06 flow-matched injectors (with a PowerCommander V and Autotune) runs very well indeed. The bike has Motad headers, Staintunes, K&N filter, O2 eliminators and PAIR-valve block-off plates. I have not disabled the flapper valve.