2g mas in 1g problem

[dsm2gboost]

OK a 2g mass flows more air right, why would my car run richer when i did a 2g mas conversion. I tried 2 different mas, i did my wiring and check it over many times, and i tried tuning it lean, nothing would work it ran like shit and would stall and back fire. I put my 1g mas back in and replace the spark plugs after replacing them 2 times while using the 2g mas, the car runs normal. does the 2g mas just not work for some cars or what. what would cause this effect, because i dont understand it. it flows more air theres no way it should run richer. some explaination would be appreciated. thanks all

 

[flytalon93]

What size injectors are you running?

 

[bus]

Also make sure you have a 2g mas plug. The first 2g mas I got for my car had the transistor pack plug. They look the same, but the wires are in different places. It made it where it didnt notice the mas at all on an afc. After we fixed that we had no problems with the 2g mas.

 

[dsm2gboost]

im running 660cc injectors, and im, getting a good reading from my afc that says the hz, and it looks to be rite cause they go up as you press the gas. so i think the plug is correct. Is there something maybe with it being a 1990 cause i know the wiring and ecu is different than 91-94. all help is appreciated thanks