Over the past 6 years, we've sold nearly 200 of the ScienceofSpeed Big Bore Throttle Bodies. The ScienceofSpeed Big Bore Throttle Body is an excellent option for supercharged, turbocharged, and naturally aspirated cars. The throttle bodies have been independently dyno proven to produce 12+ wheel horsepower on supercharged and turbocharged S2000 and nearly 6 hp on stock naturally aspirated engines.

supercharged (6 psi) - 12.2 wheel horsepower gain:
http://www.scienceofspeed.com/products/exh.../dyno-S2000.jpg

stock 2.2L - 5.9 wheel horsepower gain:
http://www.scienceofspeed.com/products/exh...big_bore_NA.gif

This past year, we sought out to improve the design of the factory throttle body. The factory throttle body was designed for natural aspiration. The shaft of the throttle body is not sealed from the factory. The design relies on the close tolerances of the shaft in the body for an "almost perfect" seal. This "almost perfect" seal produces boost leaks, and seepage when methanol is injected into the throttle body. The leaks are minor, but noteworthy. In order to make this "almost perfect" seal perfect, we redesigned the throttle body to add o-ring seals on the shafts. This insures both boost leaks and liquid leaks are eliminated. The ScienceofSpeed Big Bore Throttle Body is the only throttle to incorporate this design, and features other important design aspects such as a tapered throttle blade and flush mount hardware for the best flow.

ScienceofSpeed has 2000-05 as well as 2006-09 throttle bodies now available.

for more information:
http://scienceofspeed.com/products/exhaust...e_throttle_body





best regards,
-- Chris

 

Wow, looks good!

 

For NA applications this piece would obviously be of most benefit to cars running full intake/exhaust mods, but I am wondering if the throttle body was the only change made for your dyno, or did the car have supporting mods already?

 

do you have cores in stock for the 06-09 DBW TB?

 

looks good! any worries about replacing the o-rings after some time?

 

awesome i've always wonderd about this

 

This car has headers, exhaust, and intake. The throttle was the next logical step, however, the best hp/$ mod.

-- Chris

 

i agree.

 

Yes, we have the 06-09 throttles in stock now.

take care,
-- Chris

 

No, they do not take much load so they they should outlive the bronze bearings in the throttle.

-- Chris