OK. here's the real scoop. Today I finished syncing the throttle bodies with mercury
sticks. My way was as follows:
- Turn the air screws clockwise all the way in (there's a reason for that as
explained to me by a Moto Guzzi mechanic, and who else
understands EFI better than Guzzi, the company that first implemented FI on bikes).
- If need be....and it'll need be, bring up to 2K RPM the idle speed
- Sync to the throttle body closest to the TPS (No 4) i.e 3 to 4 using their
butterfly screw
- Sync 1 to 2 using their butterfly screw
- Sync 1&2 to 3&4 using the middle spring screw. You'll have to go back and forth to
get it to a gnat's hair.
- Fine sync all 4 by using their respective air screws
- Set TPS to 0.650 volts
- Bring back down the idle to 1K or there abouts
- Measure with Gastester ( http://www.rdent.com/pages/tools.html ) the emitted CO
from the exhaust. I set mine with the ECU turn pots to 3%
I am happy to inform one and all that the fastest GTS ever runs even better then when
I bought it but THE DREADED SURGE IS STILL PRESENT at 4.5K RPM!! Now you understand my
subject title.
BTW, at the 1 o'clock position my ECU was producing 6% CO readings which was much too
rich for my taste....and yours. This reading should vary with each individual GTS so
don't go expecting universal fixes by setting your ECU pots to 1 o'clock. I expect
that at 3% not only my MPG will improve but the squeaky clean environmentalist types
will send me a thank you note.
I am through adjusting/testing, I am through working around the house, I am through
baby sitting the in laws. The rest of my summer will be devoted to ridding and
partying in Hellas so, y'all are on your own.
George has left the building :-))
