Description:

Racing velocity stacks  developed on dynotune (Dynojet i250) and tracks,designed to use on circuits and driveways. Prohibited use on public roads

• Increase power and torque at the mid and high rpm

• Greater rapidity of the engine to increase the revs on the whole power range

• Greater reactivity of the engine during the throttle openings

•  Reduces the power decay of the engine toward the limiter

• Amazing intake sound

Dynamometers results:

Power/Rpm

Torque/Rpm

Test info:

Triumph Speed Triple 2009, Zard slip-on with map Zard exhaust

Blu line = Stock kit with AFR tune

Red line = Venturisystem kit (no AFR tune)

Tested by  Phoenix Racing Lucca

Contents of a package:

• 3 racing velocity stacks racing made by CNC machines
• 3 rubber gaskets
• assembly instructions

Warnings:

The kit increases the air intake into the engine so may need to adjust the AFR (air-fuel ratio)

More Air =  AFR lean

Shipping & Returns

Payment methods

Technical Development

What does it mean AFR?

Others results:

Power/Rpm

Power/Time

Test info:

Triumph Speed Triple 2009, Zard slip-on 

Blu line = Stock kit with AFR tune

Red line = Venturisystem kit with AFR tune)

Mapped by Tunecu

Tested by  Phoenix Racing Lucca