Compressor Surge, but only in 5th?

[RMeadows]

I thought I had the stiffness in my BOV set perfectly, however I noticed on the highway this past weekend that if I just want to speed up a small bit very quickly in 5th I get compressor surge like mad. It happens when I go part throttle and let the turbo spool to maybe 10 pounds and then slowly back off. Is there any way to avoid this? I don't want to mash on the throttle and go to full boost just to speed up maybe 5-10mph.

I guess what i'm asking is, is it surging because i'm only letting it build a small bit of boost and then very slowly backing off the throttle? Or is the BOV actually set too stiff? The only reason I question it not being the stiffness of the spring is because it ONLY does this in 5th gear when I try and boost just a small amount for a short time.

 

[RMeadows]

I thought I had the stiffness in my BOV set perfectly, however I noticed on the highway this past weekend that if I just want to speed up a small bit very quickly in 5th I get compressor surge like mad. It happens when I go part throttle and let the turbo spool to maybe 10 pounds and then slowly back off. Is there any way to avoid this? I don't want to mash on the throttle and go to full boost just to speed up maybe 5-10mph.

I guess what i'm asking is, is it surging because i'm only letting it build a small bit of boost and then very slowly backing off the throttle? Or is the BOV actually set too stiff? The only reason I question it not being the stiffness of the spring is because it ONLY does this in 5th gear when I try and boost just a small amount for a short time.

Looks like my driving just needed some work. Making sure I let off the throttle quickly after boost has pretty much solved the problem. It's just strange that I never noticed this before with my old turbo. dunno.

 

[CanadianTSi]

Just to clarify, this is your BOV fluttering not Compressor Surge.

 

[95blackGsTurbo]

Listen to the Canada man . You are going to feel compressor surge. My 1g flutters at anything but WOT and it doesn't affect anything.

 

[RMeadows]

Listen to the Canada man . You are going to feel compressor surge. My 1g flutters at anything but WOT and it doesn't affect anything.

I think I know the difference between fluttering and compressor surge. I know what you guys are referring to. Just letting the turbo spool a small bit and then letting off and it flutters. This is the car spooling up hard and then when I slowly ease off the pedal I get that quacking sound and the whole car shutters a bit.