Converting MAF to MAP

[Rasco]

Is it possible? Has anyone done it before? I have an 89' Camry with the 3SFE and I wanna go MAFless I figure I'd need a MAP sensor with the harness and an AIT temp sensor/bung to splice into my MAF harness. Anyone have the electrical diagrams. or where I can get them? Im seriously thinking about doing this. Thanks for the Help.

Rob

[white90dx]

That just won't work. A MAP sensor and a AFM create very different signals. You would have to run a different ECU (and change to the correct wiring and sensors for that ECU) to make it work. The AFM on the 3s-fe isn't much of a restriction - check how small that throttle body is...

-Charlie

Edit/PS: The 3s-fe in the Camry has a AFM (air flow meter), not a MAF (mass air flow). The quick way to tell is if it has the flapper-door thing, it is an AFM and just a little air tube (or similar) it is a MAF.

[fredk]

why do you want to do this?

[Rasco]

Originally Posted by white90dx

That just won't work. A MAP sensor and a AFM create very different signals. You would have to run a different ECU (and change to the correct wiring and sensors for that ECU) to make it work. The AFM on the 3s-fe isn't much of a restriction - check how small that throttle body is...

-Charlie

Edit/PS: The 3s-fe in the Camry has a AFM (air flow meter), not a MAF (mass air flow). The quick way to tell is if it has the flapper-door thing, it is an AFM and just a little air tube (or similar) it is a MAF.

Sorry, I get confused with the AFM and MAF. Im not too concerned with the restriction on the AFM. I just wanted to try and see if I can still use my current 2 Bar Map sensor with my 6BTM Ignition System without using any other type of EMS. I figured it would prevent some problems for future plans. Just trying to work with what I currently have. I got the idea from the Subaru guys Thanks..

[white90dx]

Originally Posted by Rasco

Sorry, I get confused with the AFM and MAF. Im not too concerned with the restriction on the AFM. I just wanted to try and see if I can still use my current 2 Bar Map sensor with my 6BTM Ignition System without using any other type of EMS. I figured it would prevent some problems for future plans. Just trying to work with what I currently have. I got the idea from the Subaru guys Thanks..

It is very easy to ADD a MAP sensor for use for a boost gauge, BTM, or other purpose...

In case you are thinking about turbocharging the 3s-fe, there are plenty of ways to do it, but in the end you will probably be happier with a 3s-gte motor swap. (I've done both...)

-Charlie

[Rasco]

Originally Posted by white90dx

It is very easy to ADD a MAP sensor for use for a boost gauge, BTM, or other purpose...

In case you are thinking about turbocharging the 3s-fe, there are plenty of ways to do it, but in the end you will probably be happier with a 3s-gte motor swap. (I've done both...)

-Charlie

How do I Add the Map Sensor? And what was your basic engine management setup for the turbocharged 3sfe? FMU/FPR, S-AFC? I did a search and read that you were able to run your set up with 7,000+ miles. Do you have any pics? I couldn't find any... they were deleted since it was couple of years back. Thanks for the Help.

[white90dx]

Originally Posted by Rasco

How do I Add the Map Sensor? And what was your basic engine management setup for the turbocharged 3sfe? FMU/FPR, S-AFC? I did a search and read that you were able to run your set up with 7,000+ miles. Do you have any pics? I couldn't find any... they were deleted since it was couple of years back. Thanks for the Help.

Well, I guess it all depends on the reason you want a MAP sensor. An FMU, BTM and many other things either use an internal sensor or are mechanical. An electronic boost gauge will have its own MAP sensor...

For my turbo 3s-fe, I just used an FMU with no other tuning. I ran 5-7psi on 91 octane and never really noticed any issues. All the pics I have are on my other computer...

Keep in mind that as soon as you do something major to your car (turbo, engine swap, etc.) you will loose all the reliability your car once had. Oh yeah, and budget about twice what you think it will cost. The only reason I feel ok doing all this stuff to my Camry is because I have a second (ok, third right now!) car. That way, I have a way to get to work in the morning if something goes wrong!

-Charlie

[Rasco]

Originally Posted by white90dx

Well, I guess it all depends on the reason you want a MAP sensor. An FMU, BTM and many other things either use an internal sensor or are mechanical. An electronic boost gauge will have its own MAP sensor...

For my turbo 3s-fe, I just used an FMU with no other tuning. I ran 5-7psi on 91 octane and never really noticed any issues. All the pics I have are on my other computer...

Keep in mind that as soon as you do something major to your car (turbo, engine swap, etc.) you will loose all the reliability your car once had. Oh yeah, and budget about twice what you think it will cost. The only reason I feel ok doing all this stuff to my Camry is because I have a second (ok, third right now!) car. That way, I have a way to get to work in the morning if something goes wrong!

-Charlie

Thanks for the help Charlie. I got a spare car and have most of the parts needed lying around. I figured it would be a fun project to work on. I just did a compression check on my motor and its pretty decent. What was your ratio on the FMU? And Did you install the AFM before or after the turbo? Thanks again.