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I was wondering the difference, and have had a 5MGE AFM collecting dust for the longest time.
Anyway, I plugged in the 5MGE AFM to my 88 3SGTE turbo engine to note differences. I used the SAFC to look at voltage characteristics and behavior.
3SGTE:
closed voltage 3.8
full open voltage .20
5MGE
closed voltage 4.0
full open voltage 0.00
I thought it might just plug and play, but upon running the car i noticed a big difference..
idle voltage 3sgte 2.6
idle voltage 5mge 1.8
As you can see the 5mge spring was much more soft... after tightening the spring quite a bit, i was able to get idle voltage to 2.5 on the 5MGE. However, the spring was still quite weak as any rev of the engine brought it to .5 (loads of air) and the car died from being too rich..
I tightened the spring on the 5MGE to 2 full turns of the black circle, as far as it would go.. Still too soft...
So it looks like the 5MGE has a pretty narrow tuning band and a fairly loose spring. Adding the 5MGE AFM had an effect of the computer thinking there was too much air. If you were to put the 3SGTE AFM on a 5MGE, the computer would think there is not enough air. This might open options up for injector upgrades and turbo upgrades. Someone would have to try the 3SGTE AFM on the 5MGE to find out. The only problem with the computer thinking there is not enough air is the advanced timing that would go along with it.
You should be able to get MR2 VPC modified to work on 5MGE. Anyway, that was my fun for the day, I thought I would share.
Anyway, I plugged in the 5MGE AFM to my 88 3SGTE turbo engine to note differences. I used the SAFC to look at voltage characteristics and behavior.
3SGTE:
closed voltage 3.8
full open voltage .20
5MGE
closed voltage 4.0
full open voltage 0.00
I thought it might just plug and play, but upon running the car i noticed a big difference..
idle voltage 3sgte 2.6
idle voltage 5mge 1.8
As you can see the 5mge spring was much more soft... after tightening the spring quite a bit, i was able to get idle voltage to 2.5 on the 5MGE. However, the spring was still quite weak as any rev of the engine brought it to .5 (loads of air) and the car died from being too rich..
I tightened the spring on the 5MGE to 2 full turns of the black circle, as far as it would go.. Still too soft...
So it looks like the 5MGE has a pretty narrow tuning band and a fairly loose spring. Adding the 5MGE AFM had an effect of the computer thinking there was too much air. If you were to put the 3SGTE AFM on a 5MGE, the computer would think there is not enough air. This might open options up for injector upgrades and turbo upgrades. Someone would have to try the 3SGTE AFM on the 5MGE to find out. The only problem with the computer thinking there is not enough air is the advanced timing that would go along with it.
You should be able to get MR2 VPC modified to work on 5MGE. Anyway, that was my fun for the day, I thought I would share.