Read this on another forum - no way this can be true!
"An extra 25bhp with a simple ram air (supercharger) system.
What you want to do is go to pc-world... get four 50mm pc case
fans.
You cut four 50mm circles out of the top of the air box and
attach the fans. Make sure you get them the right way around
(you want them blowing into the air box!!!!)
Case fans are 12v so you can wire them direct across an ignition
live or (if you only want the boost now and then) to a switch on the
dash.
The extra 'ram air' effect of the fans is worth at least 25bhp and
as a bonus you can even get funky case fans with led lights built
in for a bit of bling.
A lot of people don't know about this little wheeze. It's a
Really good way of getting more power without resorting to
Extortionately priced upgrades.
You will also notice a much better 'induction roar' as you accelerate
Obviously this is due to the forced air going into your system.
Usually I wire the fans to a switch for 'silent running' in town.
Some of the F1 teams actually used the same concept in the 2001 season
The FIA promptly banned it of course! There was a product that
Used 'passive fans' (eg not powered) the theory being that the
Passive fan would rotate with induction and the flywheel action would
Increase much needed ram air on over-run. But with the fans turned off I
Don't notice any increase in induction noise! Let us know how you get on?"
"An extra 25bhp with a simple ram air (supercharger) system.
What you want to do is go to pc-world... get four 50mm pc case
fans.
You cut four 50mm circles out of the top of the air box and
attach the fans. Make sure you get them the right way around
(you want them blowing into the air box!!!!)
Case fans are 12v so you can wire them direct across an ignition
live or (if you only want the boost now and then) to a switch on the
dash.
The extra 'ram air' effect of the fans is worth at least 25bhp and
as a bonus you can even get funky case fans with led lights built
in for a bit of bling.
A lot of people don't know about this little wheeze. It's a
Really good way of getting more power without resorting to
Extortionately priced upgrades.
You will also notice a much better 'induction roar' as you accelerate
Obviously this is due to the forced air going into your system.
Usually I wire the fans to a switch for 'silent running' in town.
Some of the F1 teams actually used the same concept in the 2001 season
The FIA promptly banned it of course! There was a product that
Used 'passive fans' (eg not powered) the theory being that the
Passive fan would rotate with induction and the flywheel action would
Increase much needed ram air on over-run. But with the fans turned off I
Don't notice any increase in induction noise! Let us know how you get on?"
Last edited:
*Pops to PC world on lunch break*
