Spec Boxster Build

[Topless]

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.

[thstone]

Originally Posted by Topless

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.