06s2kid

Is it possible for my hks single with test pipe to some times make VERY small popping noises? Theyre barley noticeable. They dont sound as if i had a missfire. Is it just the exhaust or is something wrong? Like i said, doesnt sound noticeable like a missfire, and it sounds as if it were the sound from a cam.

Nerd-Vol

When is it making the noise?

noodels

Noticed that on mine also on tick over,i have an HFC
think they run quite weak on tickover and maybe the cause?

06s2kid

i only notice it at idle. I hear the noise, its a very quiet noise but noticeable. My body doesnt feel it as if it were a misfire. When im driving and rev match a down shift it back fires some times.

Chuck S

Back fires? Really? I've not heard a car backfire in years. Sounds like a gunshot.

-- Chuck

Car Analogy

Backfire, or burble? Burble on decel is not uncommon with uncorked exhaust.

06s2kid

Youre right, its that burbling noise sorry.

johngamez10

It's normal. I also have the same exhaust and it burbles on decel.

doggz

Mine was back firing like crazy only when I had a timing set up incorectlly done.

Car Analogy

Burble is usually considered a desirable byproduct of aftermarket exhaust.