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Posted: Thu Dec 08, 2005 1:50 pm
by disc
OK, here is some info about AT90E. I have the same in my car....

Posted: Thu Dec 08, 2005 11:47 pm
by mitsuko
This is valuable information

Thx for sharing

Pat

Posted: Fri Dec 09, 2005 1:49 am
by disc
No problem mate! I have many more... Landi, Lovato, Tartarini, Viale

Posted: Sat Dec 10, 2005 1:42 am
by Rik
Any info on Vialle LPi ?
thanks Rik

Posted: Sun Dec 25, 2005 2:58 pm
by arny528
Another suggestion to control LPG system by MS - use a dual table code like MSnS-E, and feed the signal from the switch to the table-switching input of your choice on MS. That way you can easily use different VE tables for different fuels.

Just my 2 cents...

Posted: Tue Jan 31, 2006 7:44 am
by Phillblanchard
Hi mitsuko!
Ive been mad busy since i last posted on here and basically want to thank you and the others on here for the ideas and help :)

the rangie is running fairly well, i hadnt fitted a volume restrictor in the gas line from the reducer, so it was dumping a shitload of gas into the engine!! lol
wondered why the milage was so crap!
anyhow, i fitted one and got it running more econo mode style (10mpg around town).

think ive got it pretty much sorted now, the only gripe is performance.

when cold, and on petrol, it goes like a missile!! on lpg and cold its very moderate.
when warm, performance on either fuel seems worse again. not lots worse, but you do notice the difference.

maybe need to tweak the mixture a little on MS. Can i use the lambda to tune in the lpg? in the normal 0.5v cross over way or do i have to run it richer?
im currently running 10 degs advance too.

Regards and much thanks,
Phill :)

Posted: Tue Jan 31, 2006 9:35 am
by mitsuko
What you should do is run the car , with a warmed up engine , on lpg at
3,000 rpm . No load on the engine .
Then make adjustements to the restrictor to find the oxygen sensor
stoich point . Trip point at 0,5V with a narrow band .
You can watch the gauges in megatune to .

Next take it on the road , 3,000 rpm at cruising speed .
Look at the oxygen sensor again and adjust the volume restrictor
to the toggle point. This could take several runs to find it ,as you can't adjust the restrictor while driving , can you .

When you've found the trip point , adjust the restrictor 1/8 to 1/4 turn to the rich side . That ought to get you a decent performance vs fuel economy .

Pat