Spark Plug Info!!!
#41
I was going to do spark plugs today and decided to dig this thread back up in helping me decide what plugs to pick up.
I was going to just go with the Autolite 3923's, since I have a 4.7L Non H.O., so I went to Advance Autoparts website, and they don't even list that plug as an applicable plug for mine, which is a 2007 Flex Fuel 4.7L. I checked the VIN for the H.O. and they still list the 3922 for them, but for me they're showing Autolite 5224 in various models, such as copper (5224), single platinum (AP5224), double platinum(APP5224), and Extreme Performance (XP5224) Has anyone used these?
So now I don't know if I should go with these 5224's or not. I didn't really plan on going with Iridiums mostly due to cost($70-$80), but now I'm wondering if I should based on my tuning and running 91-93 octane all the time. The only Iridiums they show are Champion, Denso, and Pulsar.
I know there are some differences between the Flex engines and non flex fuel, so I don't know if this is why I'm seeing different recommendations or not.
Opinions?
I was going to just go with the Autolite 3923's, since I have a 4.7L Non H.O., so I went to Advance Autoparts website, and they don't even list that plug as an applicable plug for mine, which is a 2007 Flex Fuel 4.7L. I checked the VIN for the H.O. and they still list the 3922 for them, but for me they're showing Autolite 5224 in various models, such as copper (5224), single platinum (AP5224), double platinum(APP5224), and Extreme Performance (XP5224) Has anyone used these?
So now I don't know if I should go with these 5224's or not. I didn't really plan on going with Iridiums mostly due to cost($70-$80), but now I'm wondering if I should based on my tuning and running 91-93 octane all the time. The only Iridiums they show are Champion, Denso, and Pulsar.
I know there are some differences between the Flex engines and non flex fuel, so I don't know if this is why I'm seeing different recommendations or not.
Opinions?
#42
#43
#45
I really cant tell a difference except it does seem a little smoother at idle and during acceleration. It might be in my head though. If there is a difference, I would be the only one who would be able to tell. No one that has rode in my truck before would be able to get in and go "Wow, it feels so much better!"
#46
#47
When I pulled out my stock champions a couple months ago the electrodes were gone in the rear cylinders. Swapped them out and drove about 6k miles. When I pulled them out this time, they were a coffee color gapped at .041-.042 so the stocks do perform pretty well, IMO. Technically you should pull and regap your plugs every 6-9k.