Autolite xp iridium plugs???

**Ortiz11b** · 07-06-2011, 08:59 AM

Has anyone used these in our ls1's? good luck ,,,bad luck??? just seeing what people have to say about the autolite xp iridium plugs.. i just got my car and it had bosch double electrode plugs in it,, and looking to change them out asap... i normally use ngk plugs,, thanks for any input

**Spaz** · 07-06-2011, 10:02 AM

i've been running them with no problems... i'm probably just going to go with the cheap version of autolites next swap...

**Ortiz11b** · 07-06-2011, 10:43 AM

well i just picked these up online for 41 bucks shipped for 8 (rockauto),,, and they have a $16 rebate also.. so for 25 bucks i figured id give them a shot!

**SteveC** · 07-07-2011, 05:30 AM

I never ran Autolite plugs in a GM vehicle, I guess I always equate the name to a Ford product.

SteveC

**Spaz** · 07-07-2011, 06:33 AM

Originally Posted by SteveC

I never ran Autolite plugs in a GM vehicle, I guess I always equate the name to a Ford product.

SteveC

i don't know whhy you would... autolites are good plugs... i'd put them up there with ngk...

**M-1000** · 07-07-2011, 08:07 AM

i put those plugs in mine two weeks ago. seem okay

**Ortiz11b** · 07-07-2011, 08:34 AM

Originally Posted by SteveC

I never ran Autolite plugs in a GM vehicle, I guess I always equate the name to a Ford product.

SteveC

I always think of Bosch as a ford plug, and ac delco/champion as a gm plug... Ngk just a good plug for all.. and i never ran Autolite but everybody i know who races at the track uses Autolites... but i heard how some motors just don't like certain plugs... and i just got my car and it has bosch 2 pt plugs,, and i heard they are crap... so gota change them out asap.....

Any every $ i can save buys more parts! more parts =

***SMWS6TA*** · 07-07-2011, 09:34 AM

I agree that some plugs work better with some engines over others. I used to have a .305 sbc and it did not like Autolites, but did like the Bosch Platinum, but only the Platinum. Any other plug and it would run like crap.

I've been running those E3 plugs in my wife's Jeep to see how they would do. So far seen no major changes over stock. I did get her fuel economy up to 2 mpg more on our last long drive, but for running around town no difference. So maybe they are helping.

I will not run them in the T/A.

**bryceslu** · 07-07-2011, 11:57 AM

I put those in my LT1 and ran great. Autolites are good plugs...get em and dont worry about it.

**peteo101** · 07-07-2011, 12:10 PM

never had a problem with autolite.. had the double plats in my tahoe when i first got it and did a tune up on it a month or two later and it was fine. i did replace it with the standard acdelco and it didnt feel any better. champions on the other hand i wouldnt run in anything but a mopar and bosch i probably wouldnt run in anything, just my .02

**Ortiz11b** · 07-07-2011, 12:34 PM

Rodger that! will be putting in autolite xp's in this weekend when its not a kagillion degrees out! lol

**widget** · 07-07-2011, 12:41 PM

Why would you not try the AC Delco Irridiums, terrific plug!

**1MileCrash** · 07-08-2011, 09:22 AM

i had put bosch in my old monte carlo and it bogged and hesitated. swapped in some autolite double platinums and it ran great...immediately smoothed out and power was restored. i've seen similar things happen on other gm cars with bosch and autolite. as far as i'm concerned autolites are very good plugs. i put delco iridiums in the camaro this last time around but i may put autolite iridiums in instead next time.