Diverter Valves Volume Increased with Intercooler

[cbl117]

Since changing to an aftermarket intercooler I noticed the stock diverter valves are noticeably louder when coming off the throttle after heavy load. I also have DCI for intake but didn't notice the volume change until after the intercooler. The intercooler is a Dinan intercooler. Anyone else notice this? My assumption is the boost transients are higher with a more efficient intercooler so theres more presssure at the diverter valves under high load??

[Pig Farmer]

I didn't notice a difference at all. Do you hear it under load, or only when you come off throttle? If you hear it under load, I would check to see if you have a leak somewhere.

[cbl117]

Originally Posted by Pig Farmer

I didn't notice a difference at all. Do you hear it under load, or only when you come off throttle? If you hear it under load, I would check to see if you have a leak somewhere.

I hear it only when I come off throttle after heavy load. For example 6k shift or letting off the gas in the higher RPM range. It sounds like a blow off valve.

[Pig Farmer]

^ Cool.

[cbl117]

Originally Posted by Pig Farmer

^ Cool.

i guess its a welcomed bonus!

[Miko226]

I got the same from my VRSF Stepped 5" but i did the charge pipe at the same time so I'm not sure which one made the diverters more pronounce but they definetly got louder aslo.

[wobbles1]

My active autowerke bov was noticeably different sounding after installing wagner stepped intercooler.

[Dackelone]

A friend of mine told me that when he changed to a larger FMIC, he engine intake noise changed. He said it sounded more aggressive. He really did not expect any change, but the engine sound did change. I never seen anyone else talk about this. ?

Dack

[fe1rx]

Originally Posted by cbl117

My assumption is the boost transients are higher with a more efficient intercooler so theres more presssure at the diverter valves under high load??

There is more air volume to divert with the larger volume of the intercooler core.

[Miko226]

My intake sound became much more audible with the FMIC and Charge Pipe upgrade that is for sure and in a good way! You can actually hear the turbos spooling up top now

[cbl117]

Originally Posted by fe1rx

There is more air volume to divert with the larger volume of the intercooler core.

I think you hit the nail on the head. That makes total sense to me. Thanks!

[MightyMouseTech]

Well, a more restrictive inter cooler will act like a muffler on the intake, so makes sense.

[Miko226]

Originally Posted by MightyMouseTech

Well, a more restrictive inter cooler will act like a muffler on the intake, so makes sense.

+1