I have Siemens 60lb/hr shorty injectors, and have been pulling my hair out with the tune. It has started horribly, idled horribly, and ran horribly since day one. I have been unable to figure it out. A week or so ago, I thought that maybe my injector data was off, and the computer was off due to that. Well I decided to be sure and have my injectors flowed. I pulled them out today, and was going to get them flowed tomorrow. When I pulled them out, I noticed numbers scratched or burned onto them. The numbers on them are not something that Siemens did, and I was wondering if someone had flowed them before, and left the data on them. The numbers are 2359/66137,3559/56137 etc. Every number on them is XX59/X6137. The first 2 digits change followed by 59, with a forward slash with a changing digit followed by 6137. Can anyone make sense of these?

 

Just curious did you buy those injectors new or used? You still having issues??

 

I bought them used off of here a while ago. I actually have more money in them than new ones would have cost, and they would have more than likely flowed them for me. Lol. I turned up the IFR and it started, idled, and all out ran a lot better. I just want to be sure they are flowing very close to eachother. I have a feeling they aren't. I should have done this first off. I will never put an injector in something unless I know exactly what it flows.

 

Just a thought. I see a 90 MM TB in your sig. Make sure you adjusted the scalar in your tune for the larger TB. Cheers.