Electrical noise issues
Hi Guys ! At Fi-Tech
I have 2 seperate 30004 systems on different cars one was giving me trouble with noise interference pretty much good now !
I would like to see fitech put on there web site things to avoid on installation regarding interference
I hade to do a lot of research through forums to try find and figure out what to do
It would be benaficial to you to point out how important it is to have clean signals to fitech TB
I had people saying how crap this system is because they could not figure it out
I absolutely love this system but why not supply Sheilding sleeve to eliminate electrical noise and instructions on that install ?
The average Joe does not know this and will bag the system.
Your Thoughts !
Cheers Tony Seychell
Fitech No.1 in my opinion!!!
Sent from my iPhone
I agree completely. My 30002 was running great under the blue wire "Tach" hookup, but since I switched to "VR Coil" I'm getting RPM Noise just cranking it. I've shielded my distributor wires and grounded the battery to the body, the frame and the engine. I also grounded the starter to frame after still getting noise. Is the blue wire dead when using vr coil or does it have to be seperated and shielded from everything still? Since switching to vr coil I have the blue black white yellow wiring harness twisted together. Is that my problem?
Maybe I should wrap my entire engine in foil.
Ray
Electrical interference is common with all kinds of electrical component installations. Most common in automotive is you never run your RCA cables next to the power wire for an amplifier. This can create a bad signal to the amp and lower the sound quality.
With a Fitech application, you are introducing a sensitive electrical component to an older vehicle. The entire design of the charging and electrical system can and will be an issue.
One great example is older v8 Fords. The factory mount for the ignition coil is next to the distributor on top of the manifold. This puts it in close proximity to the ecu on the Fitech. Chevrolets don't have that problem, because their coil is on the back of the engine. My point, every install is different. But, there are some general guidelines that can help.
1. Shield the blue wire if not using timing control. Ground the blue wire if using timing control. Here is a link for shielding. https://fitechefituning.com/fitech-efi-tuning-forum-2/topic/shielding-the-blue-tach-wire
2. Run a 2 gauge ground from battery to block. 10 gauge grounds from battery to frame and from battery to body.
3. Run spiral core plug wires and resistor spark plugs. In other words no race wires or plugs.
4. Keep all Fitech wires away from coil and ignition related components. Plug wires, distributor, etc.
I just saw this, "Ground the blue wire if using timing control." That's the only time I've seen that....just want to verify that you want the blue wire grounded if using the FiTech for timing control? As in ground to the frame, right?
Follow the wiring diagram supplied.