This is a long post. It's about injectors, and why you should only buy from trusted suppliers.
#DTAFast dealer and VW 1.8t specialist Badger 5 Ltd recently received a set of injectors from a customer to fit to a car.
It instantly ran terribly, so the injectors were pulled out and tested on the ASNU Fuel Injection injector tester. This was the result:
That explains the rough running then.
Now, our ECUs are good, but not even ours can help with that!
So, we decided to send him a few sets of injectors that we use.
First up, the ever popular Siemens Deka 630cc injectors. These are getting quite old now, but the results were pretty much as expected:
All 4 were 606 to 612cc at 3 bar.
Next, our Bosch 1000cc injectors. This is the first batch of these we've had, but we trust our suppliers. You can see why:
They were all 876cc to 888cc at 3 bar.
Finally, the very well respected, and ever popular Magnetti Marelli Pico injectors. These are the 12 hole version for extra atomisation. Look at the results!
Super consistent at 496cc to 500cc at 3 bar,
As you can see, all our injectors are the real deal. We will only buy from trusted suppliers, and while we could probably get them cheaper, we would rather know what we are selling to you.
As the old saying goes, buy cheap, buy twice.
when you get customers who supply injectors with this sort of abysmal spray pattern and expect you to "magic" the afr fuel control for stable lambda via mapping..... If you get lambda afr leaping about plus/minus 20%, its because of poor spray pattern and or combined with wrong spec of spray cone and inlet manifold.. Imagine the wide cone you see in the video in a long injector port in an after market manifold.. You take an already terrible atomisation & spray pattern and pool and puddle it..liquid fuels running in, not atomised and not wanting to burn. Engine and lambda have no chance of controlling something like this with light load, cruising throttle low port velocity not able to carry the blobs of fuel into the combustion chamber to burn nice.. Bad parts/Wrong combination.. Do your research properly first!