recently bought my 87 iroc previous owner switched from 5.0 to 5.7.said car wouldnt "pull right" after.installed hypertech ecm and these yellow injectors.car is still lean.anyway to tell what lb. these injectors are?so far im finding this was probably a really nice car until he got his hands on it. now im just trying to sort it out.supposedly engine is '89 vette w/older double hump heads on it.

 

pull one of the injectors and look at the numbers on the top of it, where the plug plugs in.
put the numbers into google and find out.
sometimes you can tell by the color, but i'd look to be sure

 

thanks ill try that.they just look like a cheap set i noticed on ebay.hope not.

 

only numbers i could find were 1275194...sound right..they were on the side