MSefi.com read only forum (Jan.15,2018)

I've just fitted some new heads and injectors to my Rover V-8, so have been doing some tuning tweaks on MS. It's an MS2 V3 running the latest B&G code. After logging and viewing, I noticed some strange voltage spikes, both above and below the 13.8v norm. Max 21.8v, min 7v. They don't seem to coincide with any abnormal readings elsewhere so do I just ignore them?

Where is the MS grounded?

Are you running high or low impedance injectors?

Matt Cramer wrote:Where is the MS grounded?

Are you running high or low impedance injectors?

Low impedance - the ones as used by the original Lucas injection with resistors. I'm not using the resistors.

Might want to try using the resistors. This can make for a little less noise.

Just wondering why go to the bother of designing MS to drive low impedance injectors directly if it's just as good to use resistors? I made my new loom excluding the resistor pack. After reading the benefits of driving them directly on this site.

I'm seeing the same thing in my Alfa with low impedance injectors. What does "using the injectors" mean? Steps 69 & 70 of the V3 assembly steps? I did both of those and I've got my grounds going to the engine block and set up like the DIYAutoTune article (http://www.DIYAutoTune.com/tech_articles/grounds.html).

Kevin

kredden wrote:I'm seeing the same thing in my Alfa with low impedance injectors. What does "using the injectors" mean? Steps 69 & 70 of the V3 assembly steps? I did both of those and I've got my grounds going to the engine block and set up like the DIYAutoTune article (http://www.DIYAutoTune.com/tech_articles/grounds.html).

Kevin

Sorry, meant "using the resisters" not injectors!

Kevin