BPR7ES okay to use in a 2.4T MFi?
 

Ordered BP7ES plugs and was sent BPR7ES's in error - understand the 'R' plug has a built in resistor - would they be okay to use in a stock 2.4T?

Just want to check before I install or send 'em back...

Yes, use them, non resistor no longer available

Cheers Ed, much appreciated.

They will functionally work, but you may suffer possibly two things. Radio Frequency Interference (RFI), and a less stable spark. Also could effect you CD Ignition System. Even a cylinder misfire. I never experienced a misfire, but even NGK talks about it, see like below.

Years ago, in the days of the dinosaur, when we ran non-resistor plugs, you would hear it in your AM Radio. Sounded like an audio tachometer. I recall you could hear a car next to you at a stoplight that was running non-resistor plugs. The same for plug wires. A good example of this is the Chevy Corvette, with its Fiberglass Body, that didn’t shield the radio antenna. So the used a shielded Distributor. A metal box fitted around the distributor cap. Later Air-Cooled Porsche engine used shielded spark plug wires.

Link to NGK:
https://www.ngk.com/what-is-a-resistor-spark-plug