Hank,
Checking the plugs while only in the driveway @ correct rpm is not using the carb circuits the same way as a load on the road. Tom
This way is a quick & easy way to go & get you closer to where you need to be instead of trying different jets,go driving,try different jets then go driving again & so-on.
Saves time.You will know right away if you are too lean in the driveway & say 2500 RPM it will not want to say @ 2500 or will be missing & not running smooth.
I am not saying this is the way to get correct jetting period & no further jetting will be required.
It's just a quick & dirty way to to get close to being as lean as possible & work your way back up.Saving time.
It does not hurt your engine being lean & missing a bit a a few seconds @ 2500 in neutral.
All this testing @ 2500 RPM (no driving required) can get your carb adjusted quicker for running on the primary jets.
Thats all I am saying.
As far as which unit to use the LM1 or LC1?
Well,if you are going to adjust A/F ratios or monitor A/F ratios on different cars,get the LM1 along w/one of these http://cgi.ebay.com/ebaymotors/INNOVATE-...sQ5fAccessories
If you just want a permanant install on a particular vehicle,get the LC1.
MBHD
