tune up

[cam3439]

Well I installed some Bosch Platinum/Iridium Fusion spark plugs like 2.5 years/40k miles ago and they have held up pretty good. They made the truck run smoother, and it still runs smooth. They are installed on my '02 Z71 Tahoe 5.3L. I don't know how they'll behave in the 5.7L, but they are doing good in the 5.3L. And you don't have to be worrying about gapping as they come pre-gapped (you cannot change the gap on these). If you notice the gapping is messed up or incorrect then you're going to have go back to the store to get another set. They were 4 pronged, so I would suggest getting a similar set if they don't have the platinum/iridium fusion for your engine. Get something that are OEM or better. And you should also get some better wires. I got some 8-8.8mm wires to go with the spark plugs. Stock wires I think are like 7mm.

 

[IRQVET]

I can't stress this anymore than I already have, BUY BOSCH PRODUCTS!! I will put anything they make into my Tahoe. Currently I'm running a Bosch Platinum Plugs, Bosch Wires, Bosch fuel filter, Bosch cap and AC Delco rotor.

AC Delco parts are not horrible, but their not stellar either. I began buying Bosch parts a long time ago, and they hold up very well. I've never been let down. (Except the Alternator I just purchased and had to return because it didn't fit my Tahoe) That was my only incident where Bosch didn't come through as advertised. And even after that, I'm still a huge fan of their products.

 

[Biggwaukegan]

Listen up. If you wanna run like the big boys run MSD or ACCEL. I run MSD with the msd coil and bosch plugs. think i got the double bosch platinums. Anyways Im running a msd distrubtor too. Shit makes a world of diffference. Replace that crappy oil with Royal Purple too. Any extra hp or gas mileage gain we can get is great. Do these things and you will thank me later

 

[99Yukon_Z71]

I am using the E3 plugs in both my burban and Yukon, and so far, the Yukon which is what I drive everyday, is running like a champ. Even Justin of Blackbear was impressed at the power I was making. I run a Accel Coil, wires and E3 plugs. I am still running the stock cap and rotor, so imagine when I change those out too. Just my .02