VaraRam Veolcity Stack - what do you think?

tbyrne · May 11, 2004

I know some of you are using the Velocity Stack so I'd like to hear what you think of it. Any before and after dyno numbers, driveability changes, mileages increases ect...

For the people that don't know about this product here is a little info -

Features:

Designed to produce power and torque throughout the RPM range

Increases throttle response

Increases gas mileage

Increases acceleration

Installs in just minutes!

A patent-pending design!

Eliminates the need for a ported throttle-body by smoothing and reshaping the throttle-body entrance to increase the incoming air velocity at each given RPM.

The VR velocity stack was designed to reshape the factory throttle-body in order to boost air flow velocity at each given RPM. The overall shape of each VR velocity stack has undergone some of the most intensive airflow research that we have ever done to produce the best overall shape for each engine's airflow requirements.

Created a balanced air stream between the upper and lower portion of the throttle-body blade = more airflow.

We then changed the shape of the entrance to build up a higher velocity charge at each given RPM. This allows the intake charge force in the manifold to be increased = increased throttle response and added torque and power under the curve where you can use it.

Streamlining the intake was also achieved by directing the air in a controlled fashion to reduce any power robbing turbulence over the AIR and PCV valve to maximize the overall efficiency of the factory throttle-body's overall diameter.

Each velocity stack features a varied plenum volume whether in front of the throttle-body or in overall length to help them boost the primary and secondary pressure waves during the cylinder firing process = a tuned and more balanced induction system giving you much better overall combustion efficiency = more power and better gas mileage.

Tom

robsawatsky · May 12, 2004

I searched around and couldn't find anything other than seat-of-the-pants unverifiable commentary on the VR Velocity Stack and few complaints on poor quality. That's the problem with so many of these products, no independent, verifiable testing. Sorry, I don't buy a poor quality undocumented dyno chart on the maker's website as evidence.

tbyrne · May 13, 2004

Just pulled this info off of the FullSizeChevy site -

>>

okay, just to give you an update on what this thing actually does... all i really got out of it was 1.5MPG which is good enough for me

>>

4 weeks of running, .8 MPG solidly. Could never get over 20.8ish, now 21 with room to spare. You wont notice the Vararam on WOT bursts, where it really shows a presence is holding speed and or light tipins of the throttle. Lot less pedal effort in both cases.

hcvone · May 13, 2004

I did not get back on the dyno yet to see what if any gains were made, but throttle response seems slightly better as well as full throttle, it looked good and fit perfect, I have had it for about 4 months now. I have not seen any better fuel mileage