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BorgWarner EFR Stiff Blow Off Valve Spring

SKU 58061191364

BorgWarner EFR Stiff Blow Off Valve Spring

This product is in stock and ready to ship!
In stock
SKU
58061191364
$20.47

BorgWarner EFR Stiff Blow Off Valve Spring

BorgWarner EFR Stiff Blow Off Valve Spring

Borg Warner’s alternate “stiff” CRV spring for the EFR turbochargers provides a 66% stiffer spring rate than the standard EFR spring. Designed to meet the needs of those who require a bit more clamping force at the BOV, this is the stiffest spring suitable for use with the EFR internal BOV. (Any higher stiffness than this leads to tip-out surge when lifting from part throttle).

Comparison:  EFR Standard Spring (Left) Vs EFR Stiff Spring (Right)

efr-blow-off-valve-stiff-spring-content-1

Note: This item is not required based on HP or boost level – most applications work fine with the standard CRV spring. For applications that have an open CRV during part throttle cruising in high vacuum (Audibly loud, such as stock engine Subaru WRX/STI with EFR6758) or if surge is present while lifting the throttle – this stiffer spring may be the solution.

 

SKU

58061191364

WEIGHT

1.000000

BRAND

BorgWarner

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