Beached Bones
NAXJA Forum User
- Location
- Winnipeg
Is this a good idea? I've heard that when an XJ is cold it uses the MAP sensor to guage fuel delivery, then switches to using the O2 sensor when it's warmed up. My problem is that I live in a cold climate and even with my grill mostly blocked it takes a while to warm up to the warm cycle. Since the warm up cycle normally runs richer than "operational temperature" cycle I see a definate impact on my mileage. I loose easily more than 15% gas mileage when it's cold out. This is with exactly the same driving/trips etc.
My question is, can I use a MAP adjuster to lean out the warm up cycle to get better mileage? And assuming I calibrate it rich enough to keep the engine from stumbling, are there any other side effects I can expect from running leaner? Lastly has anyone tried this and if it works, what voltage works best for you?
Also I run a home made snorkle to get more air, and colder air. Would I get much benifit from blocking it?
92 XJ Loredo 4.0
My question is, can I use a MAP adjuster to lean out the warm up cycle to get better mileage? And assuming I calibrate it rich enough to keep the engine from stumbling, are there any other side effects I can expect from running leaner? Lastly has anyone tried this and if it works, what voltage works best for you?
Also I run a home made snorkle to get more air, and colder air. Would I get much benifit from blocking it?
92 XJ Loredo 4.0