87 I thought. You can check on mazdatrix's website if you really wanna know.

 

Maybe they just need professionally cleaned. Makes sense that they flow differently by now being that the primaries are always used and the secondaries aren't.

 

That is not how you flow-test injectors. The results from gravity feeding like that would mean nothing. Injectors are tested and measured under the same pressure they are at in the car. If your injectors are stock, they're all the same.
Also that cleaning method would've done very little. Fuel injector cleaner is only useful for regular maintainence. You need to get them professionally cleaned.

 

yea well i'm real cheap and poor

 

The low-high switch was made in 87.5. All cars after VIN #7601 are high impedance.

 

Are you sure the difference you see in the flow/amount of fuel between them isn't because they are clogged and because you use the primary more often than the secondaries? just a thought. I would send out the injectors to be tested, blue printed and cleaned. well worth the money. The turn around time for mine was 1 week. Gary

 

I would recommend, R.C. Engineering, INC.you can go to there web sight at WWW.RCEng.com
A little money well spent will save you big money down the road. Do it right the first time. Good luck. Gary

 

yea that what i think also. i'm sure most of us guys injector are like that