I have Delphi 680's in my car right now and I would like to send them off to have them flow checked. The reason is that I had an engine burn the #4 piston and now that I have everything back together I just pulled the plugs and whil #'s 1 and 3 look to be rich (which they should be as my MAF tables are zero'ed out for break in) #4 electrode is a bit more white and #2 electrode was pretty bright white compared to the rest of them. And I did not put the injectors back in in order although I probably should have. I wish I was at my house as I would just take pics and post them, but I guess my description will have to do. I am about to do a compression and leak down test just to check the health, but I am not worried as my boost table is zero'ed out as well so I have only been hitting 12 psi, and only once or twice, so no damage has been done. Besides that, the electrode does not look overly lean, just leaner then the others so it looks like there could be a discrepancy in the flow rates, I would rather check it out then risk any harm. Any suggestions would be appretiated, especially a place in Texas, Dallas would be perfect!

 

http://www.rceng.com/service.htm#INJECTOR

 

Also www.cruzinperformance.com

They are a lot cheaper than RC and it will take about a week from the day you send them out.

 

Marren fuel injection www.injector.com