1G BPR6EIX 11 or BPR6ES 11 in 1g

[Eclipse_dreamer_PL]

Hi everyone, Greetings from Poland
I have a question: BPR6EIX-11 or BPR6ES-11?
I’ve read that iridium spark plugs can ease the load on the ignition coil. Is it worth the extra cost?

I’ve recently been having issues with the engine RPM. While driving, if I apply light throttle, the car starts to vibrate and jerk; driving in traffic jams is impossible. Also, if I slam the accelerator down hard, the car sometimes stumbles and starts jerking. Could this be related to the ignition leads? The spark plugs? Or maybe the ignition timing?

 

[pauleyman]

No it is not worth the cost.
BPR6ES-11 will work fine in your non turbo.

 

[Eclipse_dreamer_PL]

No it is not worth the cost.
BPR6ES-11 will work fine in your non turbo.

And what do you think about BPR6EY ? V-Groove ? Or still the best choice is standard BPR6ES ?