I was considering putting the 'direct hits' ( www.directhits.com
) spark amplifiers onto my EF futura but was hoping to pick someones brains first as to whether it would be worthwhile.
The first thing is, I am assuming I have 'resistor' type spark plugs, as would most (all?) efi vehicles. Was looking at the BoschUSA website at their Platinum +4 plugs and the FAQ, which explains that there is a glass membrane which acts as a resistor in the plug to reduce/dissipate the RF Interference.
Without this, some RFI "MAY" interfere with other electrical signals. "MAY"
Elsewhere I read that it is only a major problem if you have solid core cables, and that a 'non-resistor' can be used in conjunction with a helical wound glass core cable ( like Eagle 9mm leads ) and that it shouldn't be a problem.
My workshop manual doesn't explain a lot about the ford EDIS module, but I would like to think it is shielded and has optocouplers in the output to protect it from such things.
I just don't want to spend a couple of hundred dollars on improving the spark and ignition setup to find it won't work, or that it will cause electrical/electronic problems. Does anyone have any information on using 'non-resistor' plugs on an efi engine, and/or any information on using direct hits?