New product - VR Velocity stack


This product is now listed on our website -


Fits all GM V6 and V8 Trucks from 1996-2004 and all GM GenIII V8 equipped cars from 1998-2004.



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


Note: Customers with ported throttle-bodies and or smooth tubes, please call us for a custom made version to fit your application.


In Truck applications VR has seen gains of up to 22+ ft/lbs of tire-shredding torque throughout the power curve where you can use it! As tested in a 2004 Silverado 5.3 V8. In LS1 car applications, gains of up to 13 rear wheel HP have been seen (03 C5 Corvette).


[]

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. In order to achieve this we:

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.

The part number for this product is - vrstack and the price is $49.99.

Tom

 

OK so this looks like it insert into the TB, actually decreasing the size.

So what is the actual theory behind it, that causes an increase in torque and rwhp??? ...

If it only gives me half of what is claimed, for $50 it's worth it. But if it does nothing will you take it back??

 

So what are gains have you seen in testing- MPG?
13 hp on a C5-what other mods did the car have?

Stock camaro LS1 is 10 RWHP a resonable expectation?

 

The horsepower numbers listed aren't peak gains. Those numbers were seen in the lower RPM range. You'll see about 1-2 peak hp with this. I installed one in my 8.1 Silverado today and drove for about 10 miles. The throttle response actually does feel better with it. Not a night and day difference but it's noticeable.

 

So could I get 10 on the low end but not so much
at peak on a stock LS1

 

would be nice to see a realistic dyno graph...

independant of the manufacturer of course....

 

This is correct.

I installed one in my Silverado last night (8.1 with a Comp Cam, long tubes and bunch of other mods). I drove it around for about 10 miles and noticed that there was a difference in the low to mid range power. I'm used to how the truck drives so I was surprized at how it pulled away from a light when I got about 1/4 way into the throttle. Not a night and day difference but noticeable.

We're sold about 30 in the last two days so I'm sure someone will be dynoing.

 

how will this work with a ported tb?

or would it have to be specifically made for a ported one since the size/dia might be different?

 

How does the older Ls1 manifold's EGR
effect the results, any testing on early models

 

Cool!

 

A special one would have to be ordered for a car with a ported TB or you could modify the stack before doing the install. If enough material is taken off the TB it could push the stack to far in so it would make contact with the throttlebody blade.

 

Hey, I like the idea, but wouldn't the throttle hit the rubber surround? what if it gets hot and bends out a little?

 

1. If it sounds too good to be true, it usually is.

2. These claims sound a lot like the claims the Tornado Air thing makes. Which is a crock.

3. The buttdyno can be decieved from the placebo effect.

4. Even porting or buying an aftermarket TB doesn't produce gains like this thing claims.

5. The smaller diameter will increase velocity, but what happens when it hits the large plenium of the intake? You'll lose it.

6. There is a sucker born every minute.

I'll wait to see if it works by letting other people buy it and find out.

As Lanz noted, what happens if the thin plastic warps from the heat? Tolerance would be tight, a minor warping issue would be a problem.

 

Man I have to agree on that. Sounds too good to be true. Somethings sound good in theory, but in the real world applications....another story.

 

The site shows big gains on truck applications.
Vararam is a big name in C5 induction and I
asked them how it is on Fbodys.
They said expect 1-2 at peak but aroung 10
lb/tq in the low-midrange. So I bought one,
hell it's the price of a bellow which is most likely
good for nothing.

I noticed better response down low, found
myself shifting earlier driving by feel. Example
I'm hitting 4th about 27 MPH, before 31-32
Indicating to me the car is stronger.

How many parts places offer your money back
if you don't see a dyno gain-they do.
Tbyrne is also a reputable company that is now
distrubiting them. Just something to consider.