HP Header Image copyright (c) 2011.

HP Hi-Flow Logo Image copyright (c) 2011.

Sports Air Filters

Are you achieving the full potential of your present carburettors???

The full airflow potential of your carburettor(s) may be limited by the contraction effect in the inlet airstream caused by an abrupt entry into the carburettor mouth.

HP Hi-Flow Sports Air Filter Contraction4 Image copyright (c) 2011. contraction effect HP Hi-Flow Sports Air Filter Contraction6 Image copyright (c) 2011.
 
INCREASED AIRFLOW CAN INCREASE POWER POTENTIAL

Flow bench tests have proven that a suitably shaped entry to the carburettor can result in a gain of 6% in airflow over a straight carburettor entry and almost 12% over a straight 'ram' tube.

HP Hi-Flow Sports Air Filter Contraction8 Image copyright (c) 2011.


HP Hi-Flow Sports Air Filter Sectioned Image copyright (c) 2011.

Why not gain the most benefit from your carburettor investment??

Fit the
HP Hi-Flow Logo Image copyright (c) 2011. Sports Air Filter
Manufactured in high quality cast aluminium alloy for added benefit of reducing the intake noise level.

All units are hand finished and presented in an alloy/bright silver look with clear powder coat for appearance and longevity.

Increased airflow potential

Greater rpm potential

Improved economy potential*

Quieter operation

Choice of economical replacement element** or K&N serviceable 'million mile' elements.

* Dependent on driving conditions and manner.
** Applies to Hi-Flow models only.
Available in a choice of 3 types
for SU Carburettors:

HP Hi-Flow Sports Air Filters for SU Image copyright (c) 2011.


Hi-Flow
Utilizing replaceable paper element.
for:

SU Carburettors

H1, H2, HS2, HS4, HS6,
HIF38, HIF6, HIF44

Ultra Hi-Flow
Utilizing K&N 'Filtercharger™' element.

SU Carburettors

H1, H2, HS2, HS4, HS6,
HIF38, HIF6, HIF44

HP Ultra Hi-Flow Sports Air Filters for tapered element Image copyright (c) 2011.
Ultra Hi-Flow Tapered
Utilizing K&N 'Filtercharger™' Tapered offset element for:

SU Carburettors

HS4, HS6, HIF38, HIF6, HIF44,
HS8, HD8


Available in a choice of 2 types for
Weber Carburettors:
HP Ultra Hi-Flow Sports Air Filters for Weber DCOE Image copyright (c) 2011.
Ultra Hi-Flow L 
Utilizing 1 3/4" K&N 'Filtercharger™' element for:
Weber DCOE 40, 45
Weber IDA/IDF 40, 44


Ultra Hi-Flow H
Utilizing 3 1/4" K&N 'Filtercharger™'  element for:
Weber DCOE 40, 45
Weber IDA/IDF 40, 44

Ultra Hi-Flow Pod
HP Ultra Hi-Flow Pod Sports Air Filters Image copyright (c) 2011.
Available with K&N 'Filtercharger™' 
pod filter element
 
SU Carburettors
HIF6, HIF44,
and
Split Weber DCOE 45
as used on race Mini's, MG's

Mixture Adjustments:

Due to the increased airflow available most vehicles will require mixture enrichment. It is advisable to check the air/fuel ratio thru' the working range of the engine. Some engines may require a change in metering needle (or jets) to maintain optimum mixture.

COLD AIR INDUCTION SYSTEMS

Many modern mid-engined sports cars can suffer from loss of inlet air density due to inhaling hot engine compartment air.
When increased performance is sought, most enthusiasts seek a less restrictive air filter system than factory plastic boxes.

In these installations there is usually a vent in the side of the car body to assist in delivering ventilation to this hot environment.

Why not take advantage of this ? - place a pod filter in this area and lead this cooler air direct to the throttle body.
Given this opportunity, why not use a thermal barrier on the tube to further reduce the tendency for heat transfer??

That's exactly what we did. HP Hi-Flow Cold Air Induction Kits for MG F Image copyright (c) 2011.

Ultra Hi-Flow
Cold Air Induction Kits
- JetHot coated tube

Utilizing K&N 'Filtercharger™' pod element
for:

MGF

Lotus Elise I




HP Hi-Flow Sports Pod Air Filter Kits for Lotus Elise Image copyright (c) 2011.

INCREASED AIRFLOW and a
cooler, more dense intake CAN INCREASE POWER POTENTIAL