Help needed: MAS Swap
#1
Help needed: MAS Swap
hey everyone, new to the forum but have a question. I'm popping in a new Spectre performance intake (looks beautiful) but the MAS (Mass airflow sencer) port on the intake does not fit my 2004 sencer. it will however fit the 03' and earlier sencer (one of many problems associated with ford changing everything at 04'). my sencer has six wires attached, the 03' sencer for the 3.0l only has 4, but the one for the 03' 4.0L has six so my question is: can i hot wire the 03' 4.0L MAS into my 04 3.0L truck? and will it severely mess with my ECU?
#2
Possibly. The PCM uses a calibrated transfer function matched to the factory MAF sensor, MAF housing size/shape, etc. It tells the PCM how the electrical input represents the flowrate for that particular MAF combo.
#3
I have looked into this for the same reason you are, and my conclusion is that the older style sensors used a different voltage range than the new ones, so to swap them out, you would have to build a custom tune for the computer to compensate for the different readable range of the sensor. In short, not worth it for a "cool looking" intake.
Do the airbox mod, and enjoy as much power as the Spectre intake would give you.
Do the airbox mod, and enjoy as much power as the Spectre intake would give you.
#4
#5
If you want an aftermarket intake, why not get one for the correct year?
The O2 sensors will correct closed loop to stoichiometric within the limits of the clips. If the compensation goes beyond a clip, it will light the CEL.
The bigger problem could be in open loop where the PCM relies on the MAF and ignores the O2's. Yes, there is an Open Loop Fuel Multiplier based on the closed loop correction but there is nothing to say that one MAF transfer function has the same curve shape as another MAF transfer function. Using the wrong transfer function can cause the mixture to go too rich or too lean in open loop in spite of the multiplier.
The bigger problem could be in open loop where the PCM relies on the MAF and ignores the O2's. Yes, there is an Open Loop Fuel Multiplier based on the closed loop correction but there is nothing to say that one MAF transfer function has the same curve shape as another MAF transfer function. Using the wrong transfer function can cause the mixture to go too rich or too lean in open loop in spite of the multiplier.
#8
#9
why not go to a junk yard and pick up a pre 2004 Maf housing and use that??? use that to connect to the open element air filter and your sensor will just drop in. I was going to do that but I have an X-cal2 and went through Doug at stuffforyourranger and picked up his maf adapter.... that will fix everything, no need to reprogram and they are really cheap... yes the 04+ intakes really suck because of the molded in housing, Ive had to deal with it a few years ago.
#11
I have looked into this for the same reason you are, and my conclusion is that the older style sensors used a different voltage range than the new ones, so to swap them out, you would have to build a custom tune for the computer to compensate for the different readable range of the sensor. In short, not worth it for a "cool looking" intake.
Do the airbox mod, and enjoy as much power as the Spectre intake would give you.
Do the airbox mod, and enjoy as much power as the Spectre intake would give you.
#13
You don't have a receipt? Get your money back. With less than that $80 I you could have gained the same power from doing a tune up, cleaning your throttle body and changing out the fuel filter. At the same time you are doing maintenance too.
Last edited by whippersnapper02; 07-22-2009 at 09:54 AM.
#15
Is this a pre-designed intake or Spectre's Build-Your-Own series?
I am currently in the middle of building an intake for my 94 with their Build-Your-Own components. However what turned up was their 4" aluminum tubing series, no matter because I already had a 4" K&N conical filter.
In their Build-Your-Own series, they use MAF adapter plates (They also have a MAF adapter tube, but it is complete garbage). They have two universal ones that most parts stores carry in stock, but they usually require drilling to fit the smaller Ford MAF. They also sell specific Ford small MAF and Ford large MAF adapter plates in their 3" and 4" intake series.
I'll have all the components for my intake done by Friday, I'll post pics to help you if needed.
I am currently in the middle of building an intake for my 94 with their Build-Your-Own components. However what turned up was their 4" aluminum tubing series, no matter because I already had a 4" K&N conical filter.
In their Build-Your-Own series, they use MAF adapter plates (They also have a MAF adapter tube, but it is complete garbage). They have two universal ones that most parts stores carry in stock, but they usually require drilling to fit the smaller Ford MAF. They also sell specific Ford small MAF and Ford large MAF adapter plates in their 3" and 4" intake series.
I'll have all the components for my intake done by Friday, I'll post pics to help you if needed.
#17
#18
#19
Spectre Industries 8145 - Spectre Performance Mass Airflow Sensor Filter Adapters – SummitRacing.com
Bolts directly to the MAF housing, no retuning necessary.
#20
Or $20:
Spectre Industries 8145 - Spectre Performance Mass Airflow Sensor Filter Adapters – SummitRacing.com
Bolts directly to the MAF housing, no retuning necessary.
Spectre Industries 8145 - Spectre Performance Mass Airflow Sensor Filter Adapters – SummitRacing.com
Bolts directly to the MAF housing, no retuning necessary.
The end of story kid has an 04 with a cartridge style MAF.
Last edited by whippersnapper02; 07-22-2009 at 11:32 AM.
#21
p.s. don't call me "end of story kid"
#22
ok, don't even talk mr. "i have a 4 0". if i was lucky enough to have that engine i would have thrown in the K&N 77 series intake. secondly, i already fixed the problem by very skillfully built an adapter plate for the universal piece on the "build your own" intake which fits air tight, is squared off, and is level in the tube. and thirdly you will never here from me having engine problems.
p.s. don't call me "end of story kid"
p.s. don't call me "end of story kid"
They do make an intake for your truck. You said 04 3.0 right? K&N does make it. Did you look? Its a POS intake anyway. I don't run it anymore because all it did was suck in hot air. That's why I was trying to tell you to return the crap you bought because you will gain little to no power but no its going in end of story. Don't listen to the guy that has done this before.
#23
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