Lately I've been driving around and at WOT when boost comes on, I get this *snap* sound somewhere in front of me. It keeps happening every once in a while. I used to think I was kicking up some rocks, but it sounds the same every time. Any guesses as to what I should check first? I've also never heard detonation or knock before so what's that sound like?

My S5 T2 is pretty stock. Still has cat, I have a catback and apexi power intake. That's all.

In any case, any help would be greatly appreciated! Thanks.

Dave

 

is it just the sound or is performance affected when it happens?

 

I think it's just the sound...I'm not completely sure. But I know if I keep going it keeps boosting and all.

 

did you touch your cluster lately?

 

heh heh...

 

No not recently...why?

 

any ideas?

 

could only be one of two things, or even both...

1. A sonic boom, from when you hit full boost and break the sound barrier.

2. Your neck cracking from the awesome power and torque TII's deliver.

 

haha, made my day

 

the only thing I could think of is the old plastic in your car breaking when you floor it or a loose cluster or something loose (maybe your washer fluid lines are hitting the inter cooler) other than that Can't really think of anything else

 

Sounds like detonation to me.. Done a tune up lately? Plugs/fuel filter/etc?

 

Plugs, wires, belts all done...I guess I should change the fuel filter...

 

Though it's like a plastic sound of some sort...kind of a dull snap, no metallic sound