1150 GS Tuning Chip

Apologies if this is already covered elsewhere but has anyone here any experience of the following tuning chip currently being offered on eBay?
https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.at/ulk/itm/333018056456
If so can you advise if it is a worthwhile upgrade?
Thanks in advance

No, check out GS JOHN on this very Site, I’ve been using his Stage 7 chip for approximately four years.
No issues, toured most of Europe using it.

Just received his Stage 10 chip, ( 28 Euros ) will be fitting it when the weather warms up. I’m a fair weather rider !! :marc

Search FaceBook for JOHN GEMI ChiPixel . :beerjug:
 
he does a discount for UKGSer members, so remember tell him you heard about him on this forum ;)
 


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