LPG Conversion to '97 Manual Legnum

[pezza]

Hmm

[fassi1]

Right so Wideband AFR fitted this weekend. Initially on LPG under light throttle under 3000rpm I was running very lean. 17 to 18 :1 AFR's So thats easily sorted increased the LPG correction map by a little and reading much better now 13 to 14 with occasional 15's

Under WOT over 4000 rpm I was dipping to 10:1 (rich) so I have started to turn the injector timing down in this area however this is much more difficult to do by myself. At least it proves I have too much fuel available and by turning down the injector timing and using less del the system will be less likely to turn back to petrol.

I will keep monitoring it now and this weekend hopefully my mate can give me a hand to get a more spot on map.

13 14 occasional 15 is still quite big difference as 13 is definitely too rich for mid load what may cause fuel trims exceed under CL.
What is the AFR at mid load and WOT, max boost on the petrol?
This car will be good test for the OMVL ECU which as far as i remember doesn't allow any changes to the gas temp correction, it has its own correction values for gas temp. difference build in.

Ill definitely be up for dyno day. Got my manifold intake off today so will be up and running on LPG very soon, but first have to get BMW 3 2.2 converted so will have to stop working on mine for some time