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is it possible to advance the timing on a obd vehicle?
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fixityourselfer Offline
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is it possible to advance the timing on a obd vehicle?
Is it possible to advance the timing on a obdII vehicle?

if yes, how? what electronics can be acquired to do the job?

(a piggyback ecu that I looked into can only retard it , not advance it .)
10-27-2010 06:20 AM
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mike Offline
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RE: is it possible to advance the timing on a obd vehicle?
Check out this article: http://www.fuelsaver-mpg.com/store/tuning-for-mileage .

Skip down towards the bottom where it discusses the temperature sensors. Air temp and water temp sensors.

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10-27-2010 11:39 AM
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jbalat Offline
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RE: is it possible to advance the timing on a obd vehicle?
So Mike is this correct (I know that I should know this by now but....),

Tricking the IAT for a higher Temperature will increase the timing ?

Tricking the MAF for less air flow will increase the timing ?

Once you increase the timing (assuming you do not ping) you can decrease AFR further ?
(This post was last modified: 10-27-2010 02:49 PM by jbalat.)
10-27-2010 02:47 PM
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mike Offline
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RE: is it possible to advance the timing on a obd vehicle?
Sorry, but I can't tell you. That article is the only article on my site that I didn't write. I haven't messed with temp sensors and timing. Not at all. So I just can't answer it. I was only able to give him the reference that discussed what he was interested in.

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10-27-2010 05:34 PM
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jbalat Offline
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RE: is it possible to advance the timing on a obd vehicle?
Maaaan...

I remember from experience when I artificially raised the temperature on the IAT to lean out the engine the Timing actually Retarded. So in light of that you would want to decrease the effective temperature to advance the timing !! Proof of that is that the car does seem to pull better on a cold day.

Still not too sure about the MAF yet, hard to say ?
10-28-2010 02:12 AM
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mike Offline
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RE: is it possible to advance the timing on a obd vehicle?
Oops. Yes, that's what it says in Tuning for Mileage too.

Sorry, I just haven't looked into adjusting timing. I can't help you on this one.

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10-28-2010 09:41 AM
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