Deadlyblade2k

Ok little history. Truck has almost 59k miles on it had it tuned with 93 octane livernois performance tune. 4" cat back exhaust, and AEM dry filter. I have regapped plugs about 15k miles ago and set them to .30 . Before i regapped plugs it used to backfire alot under WOT with 93 perfv2 tune. Regapping fixed that about 96% of the time. I was wondering if i should just replace the plugs as it seems to be the only thing i can think of that is causing my clatter. Or should i go to like .29 and try that? Buddy of mine sais the 93 octane im gettin from gas stations around me probably arent really 93 octane. To prove this i put a bottle of octane boost at around half a tank. Problem solved. BUT i was wondering should i go ahead and put better/newer plugs in since its almost 60k miles? Im wondering if they are still set at .30 as i have heard people having them get outa whack.

dieselhunter44

I would replace the plugs regardless, but the octane theory doesn't sound too far off. Have you tried a different brand of gasoline?

frieed

[OT]
It's amusing to see the difference in drivers here.
In abut 7000 mi, mine has never seen WOT
Yes, I'm old
We now return you to your regularly scheduled thread
[/OT]

Deadlyblade2k

Well any reccomended plugs I should get?

mechanicboy

Valve clatter? Sounds like a combination of valve springs getting weak and high boost. Are you sure its the valves you are hearing?

Ditto on the try another gas.

jcain

He never said valve clatter, just clatter. Could be ping (pre det) for all we know. which it sounds like givin the rest of the "testing"

Lost In Sync

You didn't read the title of his thread did you?

brettd4x4

Data logs?

CoreyMS

There's your answer.

Deadlyblade2k

BTW tuned it back to 87 and super smooth again I think just to much timing and bad gas