Mas Air and an LA3

[xr4outcast]

I have a 2.3 with a LA3 and big Vam and thought I heard something about using a Mark 8 80mm mas or a Cobra 90mm. Any input would be appreciated. This is for a daily driver and I dont really want to run stand alone.

[AJ_Fritz]

you can do it but it needs a chip.

[xr4outcast]

Who do you recommend around MD. What Mas do you think would be better?
It is going on a 2.3 with ported head, HX35 with the stainless header and external waste-gate, ported intake w/65mm throttle body.

And whatever injectors you recommend. Im only looking for around 300hp give or take, its a daily driver.

Thanks

[salating]

I am running the LA3 with a 90mm MAF. It was actually pretty simple if you have wideband that can datalog.

I logged RPMs, AFR, MAF voltage and TPS. Tuned it to 12.0:1.

[xr4outcast]

Thanks for the info keep it coming.

[salating]

You will need a wideband. I use a Zeitronix Wideband System. http://www.zeitronix.com/Products/zt2/zt2.htm

Here are the parts I got for tuning.

J3 Chip
http://www.moates.net/product_info.p...roducts_id=101

You will need a chip burner.
http://www.moates.net/product_info.p...products_id=48

Ford Programming Module
http://www.moates.net/product_info.p...products_id=73

EEC Computer Reading Interface(not needed unless you plan on reading other tune files from other ECUs)
http://www.moates.net/product_info.p...products_id=74

I got my MAF and pigtail from ebay. All brand new stuff. MAF was a 90mm Ford Racing MAF.

Here is the wiring diagram that I used to wire it up
http://www.rangercustom.com/pics/MAF/MAF%20hookup.gif

I have a stock LA3 tune setup to run a 90mm MAF. I can change it to support a smaller air meter.

I am using Binary Editor as my tuning software. Very easy to use and you cen burn the tune right to the chip with the software(if you buy it, only $60) or you can use the software that comes with the chip burner. Either one will work.

Once you have it wired up and verify its correct, you put the stock tune on your chip, put it in the computer and go datalog.

Also to make tuning a ton eaiser put a peice of screen right after the MAF to straighten the air flow out since the turbo causes it to swirl.

To datalog and make it eaiser to tune, you want to get an idle to 2.0v on the MAF. Eaiset way to do that it let the truck get up to temp and slowly increase the rpms will you see the datalogger pull 2.0v.

Then get some data from the 1.3v to 2.6v range. You can do this in 2nd gear pretty eaisly.

Then get some 3rd and 4th gear WOT pulls.

All of these combined will allow you to tune your MAF curve to 12.0:1 AFR. Thats a pretty safe area to be when in boost, anything above 12.5:1 is to lean in my opinion.

[xr4man]

do you find that there are any rpm ranges that are hard to tune? like, does it run great at high rpms but only so so at idle? or if you set the low range so it runs smooth, does it give issues at the upper range?

do you have a link to the binary editor software, i am havinng a difficult time finding it.

thanks,

ian

[salating]

http://www.eecanalyzer.net/product_info/binary_editor.html

you are tuning your MAF curve

take a look at this excel file
http://www.rangercustom.com/tuning.xls
this is what the guy who helped me used to tune my truck

If you look at the first and second try sheets it shows volts in increments of .1 from 0 volts to 5 volts and the current flow rating in lb/min that the MAF thinks I am pulling in. He took the data I sent him and entered the AFR at that those voltages. Now with voltages with more than one AFR those were averaged.

The desiered AFR was 12.0. So in the corrected flow column is where your new lb/min values are calculated to get as close to 12.0. You would new enter those new values into the lb/min column in your tune for your MAF.

Then go datalog some more and do the same thing till you are running close to 12.0 AFR.

Now the best way to do this is to force your ecu into open loop so that the o2 sensor is not correcting the AFR. A lot eaiser to tune when the 02 sensor is not making changes.

Once its close to 12.0 AFR change the open loop value back to 0 so the 02 sensor can make changes. Go datalog and see where you are at and make changes accordingly.

That sums it up but understanding it is another thing. I want to do this on adams B2 and see what kind of results we get.

[xr4man]

thanks, that's good info right there. i'll probably be picking up a chip burner and the rest of the stuff next week sometime.

[xr4outcast]

YES!!:rockwoot:

[xr4man]

just ordered up the j3 chip, burner, and adapter. now i just gotta get the maf and wideband.

[muddpawz]

can you use a 90mm maf in place of the big vam? is that what all the chip programming is going to accomplish, or is it for the complete tune of the engine?

[xr4man]

yeah, that's what the chip programming is going to accomplish.