John Gemi Tuning Chip - my experience
Posted: Fri Jan 12, 2018 11:42 pm
Trixters...
Thought i would share my experience of my upgrading from my standard chip to the 'John Gemi' tuning chip for the R1100S. For those not familiar with the chip, check out:
http://www.ukgser.com/forums/showthread ... uning-Chip
https://en-gb.facebook.com/bmwmotochip
I run a 99 with GS inlet tubes, Lenny inlet ducts with K&N filter, booster plug, decat/laser (single); this has largely been my default setup so can't compare to the standard build.
After securing an update of the Bosch Motronic on my 99 R11S @ a good price from ebay over the new year, I finally had the opportunity to put the John Gemi Stage 9 chip, an upgrade that has intrigued me for some time. Not going into the details of swapping out the Motronic unit or the chip itself, easy enough but still the usual cursing of pulling fuel tank off etc to get to it. The chip itself was easy to replace, as was motronic unit.
Starting up the bike was no problem, but first thing i noticed was a definite toning down of the boxers charismatic sound - much more muffled / quieter, not sure that was to my liking or expectation. Quick 'shake-down' before putting fairing back on, i also noticed the bike was a little rough on idle but more so on take off. No major issues, but trip to service stand & back again didn't give a huge amount of insight @ speeds less than 40 mile an hour but gear change was a bit cleaner.
Over last two weeks, done approx 1000 mile through both London traffic & M1 motorway speeds (yes, its not warm @ 7am on the M1 @ this time a year). My findings thus are:
- Idle is slow - i need to address this & after a fiddle with idle screws (the big brass ones), its slightly better but i now need a balance!
- Starting off is a different experience, sluggish if I am honest as if I have a choke on; still not sure if this is as much in my mind due to change in sound but can't help something isn't quite right here; need to investigate but slowing becoming normal too me.
- Much smoother gear change.
- Performance isn't necessarily obvious, but its definitely a little faster but i think it takes less rev's; i wouldn't say acceleration is noticeably enhanced but its definitely feels a little quicker - i sit on 80 with less rev's no doubt.
- i am no sure it's me being paranoid, but the fuel pump always seems to be running in the background - i think this is normal but if someone can confirm i would appreciate it.
- Fuel consumption improved - as much as 5-10%.
In summary, its an improvement but its also removed a little of the character i have grown up with over past couple of years. . . . That said, its slowly becoming the norm & i think its a step forward.
Next up is the rocket sprockets when i get some time to do it.
Brad
Thought i would share my experience of my upgrading from my standard chip to the 'John Gemi' tuning chip for the R1100S. For those not familiar with the chip, check out:
http://www.ukgser.com/forums/showthread ... uning-Chip
https://en-gb.facebook.com/bmwmotochip
I run a 99 with GS inlet tubes, Lenny inlet ducts with K&N filter, booster plug, decat/laser (single); this has largely been my default setup so can't compare to the standard build.
After securing an update of the Bosch Motronic on my 99 R11S @ a good price from ebay over the new year, I finally had the opportunity to put the John Gemi Stage 9 chip, an upgrade that has intrigued me for some time. Not going into the details of swapping out the Motronic unit or the chip itself, easy enough but still the usual cursing of pulling fuel tank off etc to get to it. The chip itself was easy to replace, as was motronic unit.
Starting up the bike was no problem, but first thing i noticed was a definite toning down of the boxers charismatic sound - much more muffled / quieter, not sure that was to my liking or expectation. Quick 'shake-down' before putting fairing back on, i also noticed the bike was a little rough on idle but more so on take off. No major issues, but trip to service stand & back again didn't give a huge amount of insight @ speeds less than 40 mile an hour but gear change was a bit cleaner.
Over last two weeks, done approx 1000 mile through both London traffic & M1 motorway speeds (yes, its not warm @ 7am on the M1 @ this time a year). My findings thus are:
- Idle is slow - i need to address this & after a fiddle with idle screws (the big brass ones), its slightly better but i now need a balance!
- Starting off is a different experience, sluggish if I am honest as if I have a choke on; still not sure if this is as much in my mind due to change in sound but can't help something isn't quite right here; need to investigate but slowing becoming normal too me.
- Much smoother gear change.
- Performance isn't necessarily obvious, but its definitely a little faster but i think it takes less rev's; i wouldn't say acceleration is noticeably enhanced but its definitely feels a little quicker - i sit on 80 with less rev's no doubt.
- i am no sure it's me being paranoid, but the fuel pump always seems to be running in the background - i think this is normal but if someone can confirm i would appreciate it.
- Fuel consumption improved - as much as 5-10%.
In summary, its an improvement but its also removed a little of the character i have grown up with over past couple of years. . . . That said, its slowly becoming the norm & i think its a step forward.
Next up is the rocket sprockets when i get some time to do it.
Brad
