Boost cutting off around corners, any idea whats going on?

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sliverumble
First Gear
Posts: 79
Joined: Sat May 29, 2010 7:02 pm

Boost cutting off around corners, any idea whats going on?

Post by sliverumble »

Ive got a basic ball/spring boost controller with ceramic bearing controlling boost on my 92 SS. Works like a champ 95% of the time but when ever I go around a corner and gas it, hoping to get the back end out some my boost just dies, almost acts like my FCD is not connected, but then when I pull my foot off the gas and am going straight it then lets me get on boost and acts like nothings wrong. I dont get it. Im going to check my boost lines. Has anyone had this problem before?
92 SS
-TD04
-3" dp/ turbo back w/HKS can
-wrx/legacy susp combo
-Tribeca Front Sway
-whiteline rear sway
-wrx front brakes
-sti lip
-ver.4 sti tranny w/rear diff
-wrx tmic
-mbc @14.5-15psi w/HKS FCD
-Apexi turbo timer
BSOD2600
Fourth Gear
Posts: 1636
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Location: Seattle, WA

Re: Boost cutting off around corners, any idea whats going o

Post by BSOD2600 »

typically happen when your gas tank is low? replaced the oem fuel pump yet? yes, this happened to me. then once I replaced it with a walbro, no longer a problem.

'11 WRX Limited
'94 SS | 3" TBE, 07 TMIC, TD05H-16G, Revtronix Stage 2, Walbro -- Sold
'94 TW | R.I.P.
vrg3
Vikash
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Re: Boost cutting off around corners, any idea whats going o

Post by vrg3 »

I'll second the suggestion that it's fuel starvation.

Does it happen on both left and right corners? If it only happens when you're turning right, it's probably the fuel moving over to the left side of the tank, out of reach of the pump.

A higher-flow fuel pump will help the operation of the jet pump that equalizes fuel levels left-to-right.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212
LegyC-LegyDO
In Neutral
Posts: 38
Joined: Wed Mar 09, 2011 9:01 am
Location: State of Jefferson

Re: Boost cutting off around corners, any idea whats going o

Post by LegyC-LegyDO »

Most definitely sounds like a fuel pump.
rallyOre.
91 legacy turbo
IronMonkeyL255
Fourth Gear
Posts: 1902
Joined: Sat Aug 09, 2003 5:02 pm
Location: Woodruff, SC

Re: Boost cutting off around corners, any idea whats going o

Post by IronMonkeyL255 »

+1 for fuel pump
Disclaimer: If anything I post is inaccurate, please correct me. I do not wish to add to the misinformation floating around on the internet.

That being said, everything I post is accurate to the best of my knowledge.

Rio Red '91 Legacy SS
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