F/S fuel injector modules

[phrogs]

I have both of the fuel injector modules from a 18,000 mile 90.
10086284 $350
10099210 $350

price does not include shipping.
jp

http://i150.photobucket.com/albums/s103/zr1salvage/parts/IMG_1148.jpg

[Zr1 Destroyer]

A stupid question, but how would you know if one of these guys are or have gone bad?

Also....are these located under the ecm?

[phrogs]

A stupid question, but how would you know if one of these guys are or have gone bad?

Also....are these located under the ecm?

Honestly I dont know how you know they are bad other than if the injectors are not working??

One sits on the LH wheel well and the other sits behind the battery.