TURBO: The Sound

I dont know how your BPVs works, but, if I disconnect the vacuum in my BOV, the turbo will make a similar Turkey Sound in my turbo Protege5...and thats because the turbo is being forced due to not venting or recirculating.


I think your BPVs are too tight from stock. I can try record it both ways.
In my case, just because my turbo is bigger, the rithm of the gobble gobble is a bit longer.
 
Oh man, I need to get some video of my car in action now. The turbo spool is soooo soo noticiable. You hear this highpitched jet engine sound, and then WHUTSHESSSSST! when my BPV (Flyin' Miata) hits. I live for this s***!....:D
 
nrcooled said:
If you really want to hear the turbo go with a 3" pipe off the turbo. Also the hard I/C pipes make a big difference.

FYI- Any mods that you do will increase the amount of sound your car produces. (i.e. big exhaust, FMIC, CAI etc)

Do you necessarily need a name brand piping? Cuz I got a shop that will make one for me.

Also 3" is not too big? I know that most people that are makeing them are doing 2 1/2!?? Sometimes it makes a difference and sometimes it doesn't. Cuz in my old honda I once had a custom pipe fabd' and it was too big and I didn't have enuff back presure.. just a thought.. please clarify for me, I am new at the turbo stuff.

thanx
 
kineticSpicyMSP said:
Do you necessarily need a name brand piping? Cuz I got a shop that will make one for me.

Also 3" is not too big? I know that most people that are makeing them are doing 2 1/2!?? Sometimes it makes a difference and sometimes it doesn't. Cuz in my old honda I once had a custom pipe fabd' and it was too big and I didn't have enuff back presure.. just a thought.. please clarify for me, I am new at the turbo stuff.

thanx

if you are going to raise the boost. I recommend 2.5 or bigger.

Also, big exhaust pipes will help the turbo to run cooler. I remember mi friends Supra, he had stock exhaust of 2.25inches and when boosting a lot, when opening the hood you would noitce the turbo was glowing RED. Now with 3 inches it doesnt.
 
Custom piping is fine. They will be made just like any big name companies will make it (on a mandrel bender w/ a jig big enough for 3" piping). But if they are donig any welding I would make sure to look at previous work so you can get an idea of how good their welds are.

For piping size I would suggest 2.5" hot sideand 3" cold side
 
Cool, I think I will save the $900 bucks and get my shop to make them. Thanks for all the info.

Also does anyone know anything about this car toys car show this weekend? time, location??? Thanks
 
my theory came from hearing and seeing Dexter's MSP having its BPV removed and replaced with a friends HKS BOV, and hearing the HKS and turkey sound at the same time still, where else would the sound be coming from then??
 
DevilsSi1481 said:
my theory came from hearing and seeing Dexter's MSP having its BPV removed and replaced with a friends HKS BOV, and hearing the HKS and turkey sound at the same time still, where else would the sound be coming from then??

BPV can sound similar.

Most likely it is a combination of sounds. BPV + Compressor wheel wobble. The wobble will make the "wuh wuh wuh" sound.
Wobble is common in Ball Bearing turbos. Nothing to be affraid of.

Like I said before. Your wastegate will make one sound. A POP. That is it. That is all it is meant to do.
 

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