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Old 03-25-2005, 11:19 AM   #1
pdi180
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Member#: 77540
Join Date: Dec 2004
Location: Omaha NE
Vehicle:
2002 Legacy L Sedan
Silver

Default MAP's + CAI + ProECM = ?

OK, I have searched for a few days on this topic. Thankfully i found Cobb's tech notes on the subject which helped TREMENDOUSLY even though i think it was pretty old. But I still have a few questions

First, how do i tell if my car has a MAF or a MAP? I am pretty sure my 02 legacy has a map, but I want to double check it.

Second, I heard that getting a cai really leans out the car at low rpms (at least for some cars, specifically the older 97-99 2.5's) Is this the case with my specific car?

Also, I have read that the ecu in newer cars can "learn around" the pro ecm chips and the like. I would first like to read some info on this, because that is just amazing!, and second is that the case in my car?

- as you can probably see, I read the information, i just can't tell if what applies to me!

Thanks for your help... any links, or just answers would be great!

----
Paul
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Old 03-25-2005, 11:47 AM   #2
gtwagon941
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Join Date: Mar 2002
Chapter/Region: NWIC
Location: Beaverton, OR
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2008 2008 Audi RS 4
2014 Audi S Q5

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When you look at your intake-is there a black section of the tube with a wire plugged in? If not then you are MAP. If you are MAP I believe the MAP is what is able to learn around things like the ProECM. Search on here and read about "flashes" or "piggybacks". Should help to answer your questions.

Jared
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Old 03-25-2005, 12:03 PM   #3
Lavery
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Location: Tennessee
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98 impreza 2.5rs
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true...Map...I don't know if anyone can say for certain how much the ECU learns around it or whatever. ProECM=piggyback chip

I guess this info won't help you much, just my .02
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Old 03-25-2005, 12:16 PM   #4
pdi180
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Location: Omaha NE
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2002 Legacy L Sedan
Silver

Default

Ok, let me rephrase and make my question more specific...

From my understanding, a CAI (even the good Cobbs and INJEN) will lose out on lower RPM, not necessarily worse, just not as good as it could be, because of my MAP Based engine. What can i do to solve this if the piggyback chip gets ignored after a while? Just go in and reset my ECU once a week? Or is there a more perminent way to solve it?

Thanks for the responses so far, keep em comen!
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Old 03-25-2005, 12:52 PM   #5
gtwagon941
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2008 2008 Audi RS 4
2014 Audi S Q5

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I have never heard anything about the CAI and MAP causing low end loss. what I have heard is that once you remove the stock airbox/plenum you tend to lose some low end torque.

I don't have an answer to your question if it does indeed happen because of the MAP, but BUMP.

Jared
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Old 03-26-2005, 06:35 AM   #6
anonymous_wolf
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2000 RS sedan, GC6
Blue Ridge Pearl

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i heard there's a new engine manage system called perfect power works pretty well with MAP based engines and the ECU won't learn around it (it's a piggyback as well). rallitek is now selling them.

a link from RS25 forum
http://www.rs25.com/forums/showthrea...=perfect+power

or u can get reflash too, but it's a lot more expensive.
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