Any chance your cat or exhaust is clogged? Is the mixture definitely OK? Good cap/rotor/wires/plugs? Was the battery disconnected before the "snorkel free" test run? :-)

The design of the snorkel (and the intake overall) is in part influenced by the "sound", with it removed, the intake is noticeably louder. Another important consideration is that, yes the throttle body is is larger in diameter than the tip of the snorkel, but you have to then subtract the "profile" of the throttle plate from the X-sectional area of the throttle body itself. So, under nearly all throttle positions (except near or at WOT) the "effective" diameter of the T-body isn't really more than that of the the snorkel.

Despite statements to the contrary, IMHO there's not too much room for improvement in the 240 intake unless replace all the way from the tip of the snorkel to the cylinder head itself.

-Ryan



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Athens, Ohio
1987 245 DL 314k, Dog-mobile
1990 245 DL 134k M47, E-codes, GT Sway Bars
1991 745 GL 300k, Regina, 23/21mm Turbo Sway Bars
Buckeye Volvo Club