2002 bike where s the code reader port and is there a way to bypass with a bit o

[Brian Law]

hi there my 2002 bike is running like a bag of mince and f1 lightcomes on low revs but disppears over 50 mph  just been had new down pipes fitted and engine was out to take broken studs out  since then does run good as if it s missingand back fires tooo  all advice welcome and pics of where things are to test

[ouch]

Could be as simple as firing order wrong

[Andre]

Regarding code reader port (aka "Dealer Mode") see http://gsx1400owners.org/forum/index.php?topic=429.0

[seth]

If you fitted downpipes from a k5 onwards to an earlier bike they have larger internal diameters so could be your fueling that's wrong due to that .
Have a good look through the forums and threads as a lot of info as if any of the loom plugs including the ones in the head light aren't clean or plugged in fully they cause simular problems to what your having .

[Notty]

Regarding code reader port (aka "Dealer Mode") see http://gsx1400owners.org/forum/index.php?topic=429.0

Offer £10 on eBay
https://www.ebay.co.uk/itm/Dealer-Mode-Switch-Tool-For-Suzuki-6-Pin-Connections-GSX-1400-2004-Onwards/322381744531?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

[Andre]

Regarding code reader port (aka "Dealer Mode") see http://gsx1400owners.org/forum/index.php?topic=429.0

Offer £10 on eBay
https://www.ebay.co.uk/itm/Dealer-Mode-Switch-Tool-For-Suzuki-6-Pin-Connections-GSX-1400-2004-Onwards/322381744531?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

@Notty  I doubt that this one will work for @Brian Law  . States explicitly 2004 onwards. Barmy writes in his post that  K2-4 only have 2 wires to the plug, later ones have 4.

[BlackAdder]

White plug near the main fuse, left side of battery, usually covered with a black plug, goes nowhere two wires in there. Connect them with a wire and your bike is in dealer mode. You have to keep the power on when you get the code - when you cut the power it clears the trouble codes untill the error condition is on again (usually after 2 seconds when the fault is on)

What comes to the running poor-stuff, easyest first - like the allready mentioned firing order, altho it doesnt lite up any errorcodes soo... ...engine was out and runs bad after that, I'm guessing theres a sensor tha has not been plugged in. My first bet would be the intake air pressure sensor just underneath the tank: either the plug aint connected, or the hose going to the throttlebodies isnt where it's supposed to be, not connected or kinked - would let the bike to run, but it would run very poorly.

"...broken studs out  since then does run good as if it s missingand back fires tooo..."

...but please, try to use points and capitals and so with sentences, much easyer to de-cypher whats going on...