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Frequently Asked Questions
1. Benefits of Turbocharging vs. Supercharging:
1. It takes 100-150 RWHP (depending on boost level) to spin the Paxton
supercharger.
What does this mean to the end user?
a. With Supercharger, lower peak RWHP on stock fuel pump/Boost-a-Pump
combination.
b. More stress crank snout and reciprocating assembly at a given RWHP compared
to a turbo car.
So whatever the supercharger is putting to the wheels, add another 100-150 the
engine has to make to spin the supercharger.
More power output = shorter engine life period.
2. Adjustability of boost from the cockpit.
To change boost levels with a supercharger, you physically need to change to a
smaller or larger pulley to spin the supercharger faster or slower to make more
or less boost.
With an adjustable boost controller, the end user can adjust the boost level
while driving or electronically with the engine management or the boost
controller alone if advanced enough.
Adjustability of boost revisited:
==> With turbos, not only can the boost be adjusted from inside the cockpit, but
also by Gear, RPM, Time/etc...
What does this mean for drivability for cars making a lot of
power i.e. 900+RWHP?
Being able to ramp in the boost with turbos will be more user friendly, safer
and easier to control.
Example:
1st gear = 7 PSI
2nd gear = 8-9 PSI
3rd gear = 10-12 PSI
4th gear = 15-17+ PSI
Being able to control the boost in a manner such as this makes driving a TT a
breeze!
Disclaimer: You must have the stones to put your foot to the
floor!
3. Turbos only make boost when you are in the throttle.
Off boost, the turbos are only spinning fast enough to maximize the volumetric
efficiency of the motor for increased fuel mileage.
Air-Air vs. Air-Water for moderate street driving:
My air-air intercoolers have more functionality for 900 RWHP cars driving on the
street than the air-water intercooler that comes with the Paxton kit.
The air-water will get heat soaked more quickly and will require more time to
dissipate the heat built up to make for cool air intake temps.
Top End Power Potential:
CPE Sidemount Twin Turbo: Conservatively 1200-1300 RWHP.
Paxton: 1050 RWHP. Belt Slippage will definitely come into play by this point
for those who are driving the car hard.
Moral of the Story:
Why go the supercharger route when you can get turbos and all their inherent
advantages for just about the same price?
==> My Sidemount TT or Frontmount TT can be shipped to and installed by the end user, all you have
to do is ask.
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