An honest man is good to find, namely, Tim at www.cleaninjectors.com. His price is $11 per injector (shop around - that's a bargain). The latest set I shipped to him (from my 3rd gen Maxima) had a lot of miles on them. Before I sent the injectors, he made it clear that there is no amount of cleaning that will have any affect on bad coils. Anyway, he wouldn't take my money - called me and told me that all the injectors do indeed have bad coils.