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-   -   93 WRX boost cut point? (https://www.scoobynet.com/general-technical-10/766675-93-wrx-boost-cut-point.html)

WMS 18 May 2009 01:09 PM

93 WRX boost cut point?
 
I've got a 93 wrx, it cuts out when it's boosting, not sure when the overboost cuts in. It cuts out at about 1.1/1.2 bar, it's std with just a decat downpipe.

L3YMS 18 May 2009 04:03 PM

this sounds perfectly normal to me, your decat is making it overboost. a cut around 1.1 bar is correct for safety, normal max boost is about 0.9 I think. I believe the basic quick fix options are fit a manual (or any kind of!) boost controller to limit boost, or perhaps adjust the turbo actuator arm

joz8968 18 May 2009 04:56 PM

Max boost on a std 1993 WRX saloon (with the TD05 16g turbo) is 11.47psi (0.79bar).

Subaru most likely set the boost-cut at c.0.2bar more i.e. 1bar (14.5psi)... Or it could be at the MAP sensor's actual limit of 1.2bar(?).

myblackwrx 18 May 2009 05:46 PM

1.004 fuel cut (to be super pedantic :) )

WMS 18 May 2009 07:53 PM

Cheers chaps, changed the soleniod and fixed now.

joz8968 19 May 2009 11:02 AM


Originally Posted by myblackwrx (Post 8710828)
1.004 fuel cut (to be super pedantic :) )

:D :thumb:


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