Fuel Injector Cleaner

What's the most concentrated fuel injector cleaner in the $3-10 range?

A lot of people recommend Techron from Chevron.

i would think i need more of a fuel injector 'purge'

i know gold eagle has one of those available (126k never seen a fuel injector cleaner before), does chevron have that too?

You can try this:

http://www.storesonline.com/site/598452/product/SMI001?src=google

The link in the following post has a discussion "Homemade Fuel Injector Cleaner".

Another point in this discussion recommends GM Top Engine Cleaner (or the corresponding Ford product) for cleaning injectors

BTW, here is a great discussion of cleaning and working on injectors:
http://www.swedishbricks.net/700900FAQ/Engine-Fuelinjection1.html