Standard or Matched injectors? Is there a difference?
Thread Starter
Safety Car
Joined: Oct 2002
Posts: 3,991
Likes: 0
From: Phoenix AZ
Standard or Matched injectors? Is there a difference?
I'm getting ready to order SVO 30lb injectors and I see both are offered. Standards are 205 bucks but matched are 390. I talked to 2 techs and they both said that with computers making them today they are all the same, and that "matched" actually means they were produced sequentially on the line, basically just 8 injectors off the line in a row, nothing else and that the "tuning" of the injectors is all hogwash. Is this true?
Melting Slicks
Joined: Jul 2000
Posts: 2,112
Likes: 2
From: Peoria IL
As I work in the OEM injector biz, I would hope that the matched injectors are sorted based on their gasoline flow rates. When they are flowed on the line a different less flamable medium is used. While the flow rates in that medium vary a tiny amount, I see larger variations when the same injectors are flowed in pure gasoline. My geuss is that the injectors are hand sorted into tighter groups after the pure gasoline flow rate is measured. This doesn't help OEMs because all cars get the same computers and none of them can vary A/F from cylinder to cylinder. But having a small flow rate variation from injector to injector would allow a custom tuner to tune more agressively and not be worried about A/F variations from cylinder to cylinder. If you plan on tuning aggressively, I'd say get the matched set.
