Ok, I have searched through old threads and have found lots of mention about boost gauges buzzing but no real fix for it.

Does anyone know what is causing the buzz? Is it the gauge itself...the lines going to it? a resonance or possibly the lines rattling on the a-pillar trim? I haven't dug into mine too much yet but it does buzz when boost comes up rapidly and at boost levels above 25psi. Shurly someone has fixed the buzz and has some insight as to what causes it.

I will likely take the a-pillar back off and try insulating the boost tubing to make sure it is not just vibrating against the plastic trim. Anyone else have any ideas as to what to do?

 

Some people have said that if you install a snubber (sp?) it will eliminate it. It's essentially an orifice placed inline with the tubing that limits the air flow through the tubing.

I'd take a look at your fuel pressure gauge for the buzz. If you tapped the fuel pressure at the CP3, it will transfer a good amount of noise to the gauge. If you tap the hose to the pump with a t-fitting and a needle valve, or the bottom of the stock filter housing your gauge will be quiet. Also, if you mounted your isolator to the firewall (like I did) you'll get some noise transfer.

A much better location for the isolator is on the battery tray, low and out of the way.

Good luck.

On edit:

I tried to insulate my tubing. It made no difference.

 

My Autometer does this as well, I bet it's the gauge, not the line or mount.

 

My Isspro does the same thing.

 

I had this reply to the same question on another forum I frequent...could explain the noise and why it doesn't do it on all...I will have to check mine out.

 

Thanks CRXsi, I will have to check mine this weekend.