BC98XJ

I did the neon fuel injector swap a few weeks ago and found appreciable performance and economy improvements. Now I'm wondering if there would be any benefit to a plug upgrade given the better spray pattern.

Has anyone who did the injector swap ever experimented with different plugs?

salad

I realize this is an ancient thread, but I was sitting here wondering the same thing. Did a search and there were no relevant answers, save some automatic "manual says to run Champions"

Has anyone tried this? I'm thinking that better atomization would allow some of the fancier 3-spark plugs to work, where as the stream out of the stock injectors only really burns with the older-style coppers.

Bump!

mdnov

I am not an engineer, but I have a working knowledge of the principals of the internal combustion engine. If there is more of a spray pattern and better atomization due to the new injectors, a standard plug would be more than sufficient to ignite the fuel. If the OEM plug was able to ignite the stream of fuel, how much better will it ignite a spray or mist of fuel?

freegdr

messing with spark plug heat ranges can cause catastrofic engine melt down stick with factory rec plugs chammpion seem to be plug of choice but thats up to driver/owner...JM2CW

krazynezz

From what I've learned its got nothing to do with spray pattern. Our ignition systems aren't strong enough for much more than the coppers.

salad

Okay, interesting. Thanks!

LittleMeanPurpleMachine

What about a MSD ignition upgrade and new plugs? Or is that to much juice?

krazynezz

I'm not completely sure but if you were to upgrade the entire ignition system (all the components) stronger spark wouldn't hurt.

XJ-92

this would work if you know how to properly set up a new ignition system. upgrading the whole system will get you the more power you are looking for otherwise just stay with the stock spark plugs.