[Gtnby2]

Hey guys I was curious as to what kind of spark plugs are running in your z8? I was looking for some e3 spark plugs, and didn't know if any of you had tried them and had good results.

[emersonsc]

Hey guys I was curious as to what kind of spark plugs are running in your z8? I was looking for some e3 spark plugs, and didn't know if any of you had tried them and had good results.

run what they call for. NGK DCPR8E unless your running a high performance coil, you have no need to run anything else. You've got to remember, your running an EFI unit. These systems are tuned based on everything down to the spark plug.

I have a 1990 Jeep Wrangler (YJ) with the 4.2L I-6 (last year they used that engine before switching to the 4.0L EFI engine). It came from the factory with cheap Champion Copper tops. They cost $1.99 each. I tried changing to what I figured was a better, plug. It ran like dog poo. Went and purchased and new set of cheapos, and it purred like a kitten. That was even after replacing the old coil with an MSD high output, and going from stock 6mm wires to 8mm wires.

More expensive doesnt always mean better.

[Gtnby2]

Hey guys I was curious as to what kind of spark plugs are running in your z8? I was looking for some e3 spark plugs, and didn't know if any of you had tried them and had good results.

run what they call for. NGK DCPR8E unless your running a high performance coil, you have no need to run anything else. You've got to remember, your running an EFI unit. These systems are tuned based on everything down to the spark plug.

I have a 1990 Jeep Wrangler (YJ) with the 4.2L I-6 (last year they used that engine before switching to the 4.0L EFI engine). It came from the factory with cheap Champion Copper tops. They cost $1.99 each. I tried changing to what I figured was a better, plug. It ran like dog poo. Went and purchased and new set of cheapos, and it purred like a kitten. That was even after replacing the old coil with an MSD high output, and going from stock 6mm wires to 8mm wires.

More expensive doesnt always mean better.

I've had great performance improvement using aftermarket plugs in my mustang and my truck. Maybe the jeep just doesn't want to run better lol! EFI is a good thing for drivability, but it's not the end all when it comes to performance. If it was, there would be no aftermarket industry. I was more asking to get away from trial and error.. If some had used them and maybe different ones to see the best. I liked the Bouch platinums in my stang the best after using a couple different types, and wondered what part number interchanged with the factory. Since you gave me the factory number, I can look up what I need now. Thank you sir!

[emersonsc]

Hey guys I was curious as to what kind of spark plugs are running in your z8? I was looking for some e3 spark plugs, and didn't know if any of you had tried them and had good results.

run what they call for. NGK DCPR8E unless your running a high performance coil, you have no need to run anything else. You've got to remember, your running an EFI unit. These systems are tuned based on everything down to the spark plug.

I have a 1990 Jeep Wrangler (YJ) with the 4.2L I-6 (last year they used that engine before switching to the 4.0L EFI engine). It came from the factory with cheap Champion Copper tops. They cost $1.99 each. I tried changing to what I figured was a better, plug. It ran like dog poo. Went and purchased and new set of cheapos, and it purred like a kitten. That was even after replacing the old coil with an MSD high output, and going from stock 6mm wires to 8mm wires.

More expensive doesnt always mean better.

I've had great performance improvement using aftermarket plugs in my mustang and my truck. Maybe the jeep just doesn't want to run better lol! EFI is a good thing for drivability, but it's not the end all when it comes to performance. If it was, there would be no aftermarket industry. I was more asking to get away from trial and error.. If some had used them and maybe different ones to see the best. I liked the Bouch platinums in my stang the best after using a couple different types, and wondered what part number interchanged with the factory. Since you gave me the factory number, I can look up what I need now. Thank you sir!

... never said EFI was bad nor did I say it was an end all...

[Gtnby2]

[/quote]

... never said EFI was bad nor did I say it was an end all...
[/quote]
?
A general statement about efi dude.... not towards you.....

[mayor hal]

What ever happened to " if it isn't broke, don't fix it"? 

[emersonsc]

What ever happened to " if it isn't broke, don't fix it"? 

my thoughts too.

What i've found over the years, especially with spark plugs, is that most of these premium plugs are gimmicks. Run what the manufacturer recommends and leave it be. There are premium plugs out there for engines designed to run them. These dont need anything fancy.

http://www.amazon.com/BRISK-PERFORMANCE-SPARK-Replaces-Bosch/dp/B00NBQ3KC0

This company called brisk makes a "premium" plug to replace our plugs (the NGK number crosses over to the Bosch that this plug replaced). I watched some youtube videos the company produced... and didn't notice much of any difference between theres and a standard plug. In fact, the comments on the videos were pretty harsh because most people noticed the same thing.