Flow Matched Injectors
Thread Starter
Teching In
Joined: Sep 2025
Posts: 24
Likes: 1
From: Henley-on-Thames, United Kingdom
Flow Matched Injectors Are flow matched injectors necessary for milder builds? I'm about to pull the trigger on a set of new injectors and I can get brand new x8 set of Bosch L77 injectors for $220 shipped to my door. I'm looking at pretty much double that (a bit over $400) for a set of the same injectors that have been flow matched...
Is this money worth spending now? Could I get them flow matched at a later date?
Is this money worth spending now? Could I get them flow matched at a later date?
Staging Lane
Joined: Oct 2025
Posts: 89
Likes: 32
Not a big problem with new injectors. It’s the older that can have wear or deposits. Weakened coils. I’m going to match mine with a DW65c pump to match their needed flow. Adequate flow, no overkill. Will you have any wide band testing when your build is complete? If the wide band is good, flow matching can be a later option. Misfires or lean plugs would mean testing in needed.
Thread Starter
Teching In
Joined: Sep 2025
Posts: 24
Likes: 1
From: Henley-on-Thames, United Kingdom
Thread Starter
Teching In
Joined: Sep 2025
Posts: 24
Likes: 1
From: Henley-on-Thames, United Kingdom
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Interesting timing on this topic. A guy down the street from me is doing a budget low boost turbo build, and I am selling him my 20 year old siemens deka 60lb injectors that I replaced a couple of years ago with 1050cc FICs when I added a flex fuel sensor to my car. The set was never flow matched to start with, and I decided to clean and test them before selling them. The spread between highest and lowest flow was about 6.5%. I believe the factory acceptable tolerance is around + or - 6%.
