Fuel and backfiring

[Neil W]

I've not long been back from a short trip to The Mosel andEifel mountains in Germany , the question is does anyone else encounter excessive backfiring when using the their bikes on the continent.
Mine is a 1999 R1150 GS fitted with a K&N , Y piece and standard end can.
Mine has always backfired to a certain extent and it is always worse when abroad. This despite making sure there were no leaks on any of the exhaust joints it was 10 times worse than normal. Tried alternating between standard unleaded and the higher octane premium stuff with no difference.
Once back in the UK and refilled it went back to normal, I'm not going to loose sleep over it just wondering does continental petrol have any different additives in it likely to cause this ?

 

[Colban]

You are running the same set up as me,but have you done the Steptoe cat code plug mod ?.
I have had fuel problems in France with dodgy supermarket fuel but i would have thought Germany would have a decent standard of fuel.

 

[madman]

You are running the same set up as me,but have you done the Steptoe cat code plug mod ?.
I have had fuel problems in France with dodgy supermarket fuel but i would have thought Germany would have a decent standard of fuel.

All fuel in the UK and Europe conforms with the same EC standard. I have never found dodgy supermarket fuel in France and I live here!

 

[Neil W]

I don't think the fuel is dodgy infact the bike feels that it goes better on the fuel in europe its just that it backfires a hell of a lot more .
At home it is just when decellerating by rolling off the throttle from speed in say 3rd or 4th. In germany It was doing it in all gears. Got to be a bit of a pain in traffic around town.

 

[Rich-v]

You are running the same set up as me,but have you done the Steptoe cat code plug mod ?.
I have had fuel problems in France with dodgy supermarket fuel but i would have thought Germany would have a decent standard of fuel.

Hello there, my first toe-dip in this GS forum... My GS has a similar setup, what's this Steptoe cat code plug mod??

 

[Rich-v]

Forget that one, I've found the page.