surge question..

Bunghollio · 05-07-2006, 08:20 PM

I think what I'm experiencing is compressor surge. From what I've researched, it has symptoms of what people claim to be compressor surge (low boost/low rpm shifts, i hear a flutter sound... high boost shifts, i hear the regular BOV whoosh).

What I'd like to know is, is my problem coming from my wastegate or my BOV? I have a TurboXS type RFL BOV and I have a stock STi vf39, catless downpipe and a cai at below 3000 rpm i get this turbo sound like a psh psh psh from the turbo not the bov at above 3000 rpm the bov blows off fine am i getting surge? and can i tell if its surge by the boost gauge?
Sorry... this research has confused me.

its only when i have lil to no boost its a psh psh phs
the sound is just like that from gti's and those supras

Bunghollio · 05-07-2006, 09:20 PM

listin to this video its in the first few seconds when he is shifting gears at low rpm sounds just like this http://videos.streetfire.net/hottest...CC15D6C160.htm its at 6 seconds in the video

Bunghollio · 05-08-2006, 12:32 PM

anyone has any info?

ArizonaSTI · 05-06-2007, 08:46 PM

im am haviing the exact same problem but i have a recirculating turboxs BPV

***CenCali07STI*** · 05-06-2007, 09:44 PM

I do not know much at all about this situation but I will take a guess but could it possible be that your bov is not set right and not able to release at low boost levels causing the compressor to surge? because my factory bpv will release at very low rpms.

ArizonaSTI · 05-06-2007, 10:13 PM

when i recieved it, it had 6 washers installed and it sounded really loud (surge sound)

so i took one by one out and finally got down to just the spring and its almost gone but you can still barely hear it, which is alot better than before but now it has a problem holding boost

***JDM-STI*** · 05-07-2007, 11:47 AM

I would think that if you are getting compressor surge, you will see the boost gauge needle flutter too.

05-07-2006, 08:20 PM	#1
Bunghollio Senior STI Driver Feedback Score: 0 reviews Car: 05 Subaru WRX STi My: Subaru Parts for sale Join Date: Jan 2005 Location: Glendale Posts: 360	surge question.. I think what I'm experiencing is compressor surge. From what I've researched, it has symptoms of what people claim to be compressor surge (low boost/low rpm shifts, i hear a flutter sound... high boost shifts, i hear the regular BOV whoosh). What I'd like to know is, is my problem coming from my wastegate or my BOV? I have a TurboXS type RFL BOV and I have a stock STi vf39, catless downpipe and a cai at below 3000 rpm i get this turbo sound like a psh psh psh from the turbo not the bov at above 3000 rpm the bov blows off fine am i getting surge? and can i tell if its surge by the boost gauge? Sorry... this research has confused me. its only when i have lil to no boost its a psh psh phs the sound is just like that from gti's and those supras Last edited by Bunghollio; 05-07-2006 at 09:16 PM.

05-07-2006, 09:20 PM	#2
Bunghollio Senior STI Driver Feedback Score: 0 reviews Car: 05 Subaru WRX STi My: Subaru Parts for sale Join Date: Jan 2005 Location: Glendale Posts: 360	listin to this video its in the first few seconds when he is shifting gears at low rpm sounds just like this http://videos.streetfire.net/hottest...CC15D6C160.htm its at 6 seconds in the video Last edited by Bunghollio; 05-07-2006 at 09:29 PM.

05-06-2007, 08:46 PM	#4
ArizonaSTI Grassroots STI Racer Feedback Score: 1 reviews Car: 06 Subaru STI Fav Mod: DomTune My: Subaru Parts for sale Join Date: Mar 2006 Location: Bellevue/Bothell, WA Posts: 548	Re: surge question.. im am haviing the exact same problem but i have a recirculating turboxs BPV __________________ Mods: STI Short Shifter Kit \| Perrin EBCS \| Perrin Catless DP \| Custom N1 Catback \| Cobb Crank Pulley \| Cobb SF Intake \| Snorkus Delete \| Walbro 255 LHP Fuel Pump \| 225/45R17 BF Goodrich KDW \| Perrin Radiator Shroud \| Greddy Header \| Agency Power Short Shifter \| Enginuity Tuned By Dom

05-06-2007, 09:44 PM	#5
*CenCali07STI* Platinum Member Feedback Score: 3 reviews Car: 07 STI SWP Fav Mod: Custom built TBE FTW!!! My: Subaru Parts for sale Join Date: Feb 2007 Location: Modesto, California Posts: 1,229	Re: surge question.. I do not know much at all about this situation but I will take a guess but could it possible be that your bov is not set right and not able to release at low boost levels causing the compressor to surge? because my factory bpv will release at very low rpms.

05-06-2007, 10:13 PM	#6
ArizonaSTI Grassroots STI Racer Feedback Score: 1 reviews Car: 06 Subaru STI Fav Mod: DomTune My: Subaru Parts for sale Join Date: Mar 2006 Location: Bellevue/Bothell, WA Posts: 548	Re: surge question.. when i recieved it, it had 6 washers installed and it sounded really loud (surge sound) so i took one by one out and finally got down to just the spring and its almost gone but you can still barely hear it, which is alot better than before but now it has a problem holding boost __________________ Mods: STI Short Shifter Kit \| Perrin EBCS \| Perrin Catless DP \| Custom N1 Catback \| Cobb Crank Pulley \| Cobb SF Intake \| Snorkus Delete \| Walbro 255 LHP Fuel Pump \| 225/45R17 BF Goodrich KDW \| Perrin Radiator Shroud \| Greddy Header \| Agency Power Short Shifter \| Enginuity Tuned By Dom

05-08-2006, 12:32 PM	#3
Bunghollio Senior STI Driver Feedback Score: 0 reviews Car: 05 Subaru WRX STi My: Subaru Parts for sale Join Date: Jan 2005 Location: Glendale Posts: 360	anyone has any info?

05-07-2007, 11:47 AM	#7
*JDM-STI* Platinum Member Feedback Score: 14 reviews Car: 2005 & 2008 STI Fav Mod: Scott Siegel Tuning!!! My: Subaru Parts for sale Join Date: Mar 2005 Location: Columbus, GA Posts: 2,482	Re: surge question.. I would think that if you are getting compressor surge, you will see the boost gauge needle flutter too. __________________ 2008 STI Aspen White/Gold BBS~305whp/369wtq 2005 STI CGM/Bronze 57F Gram Lights TopSpeed RR1 long block and UR GT35R .63AR~528whp/483wtq Both tuned by Scott Siegel

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