blow off valve failure
#1
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Just found out my blow off valve went bad what amount of HP loss have you seen with this failure?
Also what’s the best Aftermarket blow off valve to replace this with?
Also what’s the best Aftermarket blow off valve to replace this with?
#3
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Stock Porsche OE blow-off for 993/996 with the brass-reinforced diaphragm works fine, too.
Trouble with the 951 BOV is the diaphragm was only fabric and failed frequently.
Trouble with the 951 BOV is the diaphragm was only fabric and failed frequently.
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I really like the Turbosmart Kompact series. They're externally adjustable too. Right now I'm running their dual port and couldn't be happier, but they have a bypass version available too (the dual-port can be converted to BOV, bypass or both). Our cars take the 25mm outlet size. I had a Forge knock-off (no idea what brand) on it that the PO installed and the piston was sticking open. I wanted to try something different and saw the Turbosmart.
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I have one from Lindsey that I am ahppy with, but i normally run a GFB hybrid blow-off. It recircs 50% of the pressure which keeps me from having running probs, but still sounds fantastic. Track time sees the Lindsey as there is no reeason to lose 50% pressure - you can't hear anything anyway.
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How can you put a number on this? You'd have to stick her on a dyno with a bad BOV. I ran 14.2 on the quarter mile with a bad fuel pressure regulator... but a bad BOV... who knows? depends on how bad it is... just fix it!!!!
#15
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Interesting...I have the Lindsey one myself and got the extra spring but didn't install it. I'm about to have it all out doing my Vitesse MAF install in a few weeks - what exactly is the advantage of the tighter spring?