4A-FE MAF or AFM

[Dirtjump9]

I was doing some searching and I came upon THIS thread. They are taking the AFMs in their Camrys and clicking the little gear type thing a few clicks leaner for more power. Does the 4A-FE engine equipped in the '91 Corolla have a MAF or an AFM? If it has only a MAF, can a potentiometer be used to tune the air/fuel mixture? Also, I have seen another site which says that you could do the same thing on the water temp sensor to control the mixture. Does these tricks work or will the ECU eventually learn the mod and tune to compensate for it?
One more question; to advance the timing you need to bridge the two terminals in the diagnostics port, remove the cover on the distributor, then turn the cap, correct? BTW, yes, I have access to a timing light

[toyotaspeed90]

neither, they're map based

[Flashmn]

and what good will it do to adjust the fuel air mixture? You wont get any power with it, because the engine isnt getting any more air with the added fuel. Plus MAF and AFM are the same thing

[Dirtjump9]

Okay, thanks for the clarification. The reason why I wanted to see is because you could click the gear back a couple of teeth on the AFM sensor to lean the mixture out and provide more power and better throttle response (because Toyotas are jetted very rich form the factory).
I'm still all new to the EFI tuning scene. I had no clue that MAF and AFM were the same thing. I though MAF used the electronic sensor inside the intake whereas the AFM used some sort of air vane to control a potentiometer. Well, atleast now I know BTW, do MAP based sensors get fouled when using a K&N filter? I bought a CAI setup with the K&N filter on eBay before I was enlightened about the flaws.
Just wondering, is there any way to give the same effect as the AFM trick to improve the throttle response?

[cuzman]

what the fk!
AFM Air flow Metre
MAF? manafold air flow (never herd of it!)
Both measure the air flow in to the engine same thing
MAP manafold air pressure
Measures the vacume of the motor/manifold and works out the air flow

Both systems also relie on the throttle postion senson! and the o2 sensor to keep the fuel mixure right....
All new cars wil run as lean as possible under light load due to emmission regs...but if ya floor it they give you an increase of fuel for best performance..and a bit rich is needed under full load for best power and reliabilty!
if the factory could have got more power or fuel consumption fron a screw twist dont ya recon they would have..lol..if ya adjust your afm to lean out you might have a revvy engine but ya hp will go to sh*t and it'll idel like crap...good luck..

[REN69]

AFM and MAF is the same thing backwards! people still get these confused, they call it MAF trying to refer to MAP instead. Noobs!

[punter]

MAF = mass air flow (metre). As everybody said, same as a AFM.