Do phenolic spacers work???

[crazypete]

For a carb'ed application, they most definitely do work. They keep the carb from cooking off and make a small change in low end torque. For a EFI, they will keep the intake a little bit cooler and thats about all the good they will do for a long runner EFI intake. You should also bypass the intake EGR spacer coolant line if you're gonna bother to do this. No sense insulating the intake below if your heating it at the top. The slightly lower intake temp will make slightly cooler and slightly denser air enter the motor. Worth a hp or two. I'd do it if you can make one fit.

I ripped out that insulatiing pad the first thing when I got the car. Rip it out and go phelonic. Dont get a cowl hood, every idiot in a jetta will try and race you and every cop will be drooling to give you a ticket.