Engine knock

[Mn Avalanche]

Well heres my question.I got my Azsm longtubes on and love em.but i can hear a knock or ping on passenger side,only at idle.I swear i can hear it through the header also.I am waiting on my magnacore wires so i left my stock plug wires in.Is this the infamous piston slap at 6400 miles?i had allen tune for my mods so i dunno,its running great i towed my boat 300 miles this weekend, and was beating peeps to freeway merges off the line towing 5000LB boat so all seems well.Im clueless im still getting used to the sound of the headers at 3k rpms, i cant tell if i hear a bag of rice or if it cause of the headers.

[farmtruc]

Hi,

I've heard others say there is a small noise after a header install. It's either a very small leak or just the normal header ping. I'm sure it's a little annoying,

allen

[Mn Avalanche]

Thx for reply allen.I feel better now. Im sure it just me, i did so many mods at once,That i cant keep up with the diffrence its made.

[L82gofast]

You probably ate a ricer and it needs to burp!

Its probably normal if its a faint noise as the stock manifolds cover that up since they are so thick.

[onyx]

i had the same problem after i installed my headers... i think since the motor is running cleaner now, you hear more... its very annoying though... luckily i have no KR because of it... thanks allen!

maybe i should try tightening my bolts anyway...