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Old 10-01-2013, 11:42 AM   #64
thstone
Certified Boxster Addict
 
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
Quote:
Originally Posted by Topless View Post
Hmmmm,
Tom is your gas tank still vented or did they just terminate all the vent tubing when emission stuff was removed? It sounds like you may be pulling a vacuum on the tank as gas is used, causing the fuel pump to cavitate. One possibility at least.

Sounds like a nice day at the track. I suspect your BSR will soon be in 1:36 territory.
Tank is still vented using the stock system in order to pass emissions test and remain street legal. Agree that lack of vent could create a vacuum and result in symptoms that I am seeing. Will investigate.

BTW: Goal is to get into the 1:34's.
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1997 Spec Boxster BSR #254
1979 911 SC
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