I've got all the SD MAP scalings worked out. I'll be posting them later this evening if I can find the time.

 

This is what my maf looks like. I may be doing this sooner than I though.

 

Did you ever post these settings anywhere?

 

Not yet. Sorry, a few other things weaseled their way higher on the to-do list. I'll get to it before the weekend.

 

thanks fred...Im still trying to find a better solution than my fake boost adder.

 

Wouldn't the 4bar just need different scalings for the boost control tables?

25 psi of boost would be roughly a raw bit count of 214 using the JDM 3bar. So your desired boost table is 25 psi, which is 214 raw.

That same 214 bit count would correspond to ~36 PSI on the 4bar. Thus, the ECU would try to reach the raw bit count of 214, giving you 36 psi instead of 25 PSI that is reflected using the 3 bar scaling.

The ECU just looks at the raw bit count, it has no idea if you have a 3 bar or 4bar. The ECU tables just need to be scaled to reflect the 4bar.

But honestly, I haven't tuned closed loop boost at all (I use a manual controller) so I could be completely wrong.

 

Where would one scale these tables at. Is this something I need to setup in EVO Scan?

Any settings reference, or location to look for?

 

Hey guys. After installing the omni 4 bar, I've noticed a lean spike of over 18.4 (aem wideband) when slightly lifting off the throttle after boosting. Has anyone else experienced this? Any ideas?

 

D-VO, I am seeing similiar. If I lift I go flat line on my AEM Wideband. Of ourse I am also experiencing stutter, hesitation and misfire when I push the throttle over 25% at about 3k - 5k. I also just installed my 272's at the same time though...

By chance do you have the scalings for ECUFlash and EVO scan on the Omni 4 Bar, I don't hink mine is reading right. My boost guage says higher than Evo Scan does...

Any help on this would be tremendous. Thanks

 

NP. I opened the tables linearly and arranged them from left to right:


*Now that I'm looking at this, shouldn't the map scaling table go upto 5 volts and not 3.63? I thought the omni map sensors read from 0 - 5 volts. Could that be whats causing the lean spike? Does anyone else have this problem?

For EVOScan: What I did was copied the "JDMMap" code in the xml to create a second one and named it "Omni 4 bar", then changed the formula to 0.238683*x-(add your atmospheric pressure here), so in case I need to log JDMMap on someone elses car I'll still have the correct formula for the 3 bar.

BTW: I've noticed this stuttering issue coming up again in recent posts. Didn't this have something to do with the P0300 code or blown head gasket or something. I used to have this problem too, but my memory is a bit spotty on the answer.

 

Do you have the xml code? what rom are you running?

 

96940011:
<table name="MAP Scaling" category="MAPSensor" address="57d2" type="2D" level="1" scaling="uint8">
<table name="MAP Output" address="6ed4" type="Y Axis" elements="9" scaling="Volts16"/>
</table>

<table name="MAP Fault Trig: Mid VE Max #1" category="MAPSensor" address="28b4" type="1D" level="1" scaling="Volts16"/>

<table name="MAP Fault Trig: Mid VE Min #1" category="MAPSensor" address="2894" type="1D" level="1" scaling="Volts16"/>

<table name="MAP Fault Trig High VE #1" category="MAPSensor" address="289a" type="1D" level="1" scaling="Volts16"/>

<table name="MAP vs MAF Baro" category="MAPSensor" address="2802" type="1D" level="1" scaling="uint16"/>

<table name="EGR MAP offset #1" category="MAPSensor" address="44fa" type="2D" level="1" scaling="uint8">
<table name="RPM" address="623c" type="Y Axis" elements="9" scaling="RPM"/>
</table>

<table name="EGR MAP offset #2" category="MAPSensor" address="450a" type="2D" level="1" scaling="uint8">
<table name="RPM" address="623c" type="Y Axis" elements="9" scaling="RPM"/>
</table>

<table name="EGR Pressure Diff" category="MAPSensor" address="1b68" type="1D" level="1" scaling="Volts16"/>

<table name="MAP Comparison" category="MAPSensor" address="27fe" type="1D" level="1" scaling="Volts16"/>

The rest are here: https://www.evolutionm.net/forums/ec...tructions.html

 

You say they are 100$ shipped, but now its 120 plus shipping.. Did the price change that much? Who offers the best price on these right now? Thanks

 

I got mine on fleaBay... $125 shipped. Not sure some vendors have them.

Thanks for the code... Will check it out.

 

MAP has them for 125 shipped.