UPD Intake

99Silver6.0 · June 17, 2002

Im just about to buy the UPD intake, but I have one question. Has anyone had a problem with the taller airbox lid hitting the underside of their hood? Does this really provide a noticable gain in power? I do have my Mass air descreened and my EGR has been cut down. Thanks!

Greg · June 18, 2002

I had no problem with hood clearance. The instructions (at least for the Av) tell you to tilt the MAFS 45 degrees toward the firewall to make sure it clears the hood.

I noticed about a 5% improvement in mileage and more apparent torque in the 1500 - 2500 RPM range.

I'm very pleased with the unit - especially keeping the closed airbox since my Av's engine compartment likes to take showers every time it rains.

99Silver6.0 · June 18, 2002

Cool! I didnt know much about the UPD intake. Thanks!

HD Doug · June 20, 2002

99Silver5.3,

I don't know about your exact model's configuration, but my 8.1L HD's UPD went in w/no problems.

Throttle response was immediately noticeable, but I can't say there were major mpg gains.

HD Doug

LazKat · June 22, 2002

Is anyone using the UPD in combination with the PowerAID TBS? Any issues/problems on the install?

July 26, 2002

I have a TB spacer and an MAC Air dam and tube... The TB spacer puts everything forward about an inch.. Depending on the thickness and curve of the tube it should fit without hitting your fan shroud.. ;) In my case with the MAC.. the rubber boot from the tube to the Throttle body sits right there against the fan shroud. It sits right against it with the boot slightly bent in (doesnt add any restriction cause its hardly even bent...) Worst case you might have to take a notch outta the fan shroud if your tube doesnt fit.