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Last year I raced a 1293 on a 5" Maniflow inlet, STR930 cam, race LCB from Maniflow into a megaphone, nicely ported head, and a little too low compression.

This year I've fitted another head, increasing the compression, more porting and a 3" Maniflow inlet and a SW23 camshaft.
The guy that's going to rolling road it has not got many Weber spares, so I need to get these myself first.

When increasing the compression, what will normally happen to the needs on the 45DCOE?

Hi,

what I learned: Install a lambda Instrument. Look for a straight, slightly climbing road and hold the car at 4000 revs. Not becoming slower and not accelerating watch your instrument. Repeat with 6000 revs. Try to have your pointer in the middle at 4000 with the main nozzle (bigger more fuel) and at 6000 with the air correction nozzle (bigger less fuel). The tube between might be a F16.
Some guys may beat me now. But it works. If I would tell you to take 160 main nozzles and 160 air corrections, it might be completely wrong. What I learned too. There are no two identical working motors.

Regards.

whats youre current jetting?