Originally posted by John
The other alternative is a plug Jimmy told me about,
Ive been meaning to look into, its like the A55V but with a
resistor and only costs a mere $5 a piece. I need to ask
Jimmy to run them in is gr. A car first to make sure they are
safe for me
I have done it.
My Touring car came with zero new A55s plugs.
Just a box full of old ones.
The only plugs I have ever run in it were the "Qs".
No problems to report, ran fine, plugs read great.
My car is set up with an old, fairly archane, British Zytek engine mgt system. Its quite basic and all plugs still read well.
It will actually even start on them,,, but takes forever before I can move it or rev it.
Moving can come much faster with the startup plugs.
Once the engine has heat in it once, I am fine with the race plugs the rest of the day.
Champion engineer told me they (Qs) were a pretty direct replacement and "should" have no ill side effects.
The only reason they did the resistors was to reduce RF interference in DMEs on Ducati race bikes (which is the primary use for this plug today).
88 E30 M3 Zinnoberot - street - 2196827
88 E30 M3 Lachsilber - Race - 2197924 (#98 SPU)
87 E30 M3 Prodrive British Touring Car 2.0 Litre - 068
04 Ford F350 - V10
06 Audi A3 Brilliant Red / 2.0 / DSG