new -Fuel Pump Power
Distribution Kit
new -
Clutch Damper
Delete & Hose Kit
new -
Clutch Slave
Hose Kit
new -ScienceofSpeed
NSX-R Engine Cover
new -AEM Series 2 EMS
for 1991-94 NSX
new -
Moton Club Sport
Shock Absorbers
new -
ScienceofSpeed FI
Exhaust Systems updated
- stealth license
plate bracket -for 2002+ NSX
new -
CT Engineering
Gen II Exhaust updated -
ScienceofSpeed
Billet Carbon
Twin Clutch
new -
3.5L NSX
Short Block
new -
AEM Series 2 EMS
for
1995-05 NSX
The
Aeromotive 340 HP fuel pump is a direct-replacement for the factory fuel
pump in the S2000. This pump flows 340 liters / hour of fuel at 40 PSI
(see flow chart below).
Choose the fuel pump that is ideal for your application. An over
supplying pump will simply cause more unwanted heat into the fuel
system. As a general rule for the S2000, we recommend the Walbro 255 HP fuel
pump up to 400 whp and the Aeromotive 340 HP fuel pump in excess of 400
whp. For more specific calculations, use the guide below.
selection guide: The factory base fuel pressure is 43.5 PSI. A fuel system with a 1:1
fuel pressure regulator will increase the fuel pressure by 1 PSI for
every 1 PSI of manifold (boost) pressure to maintain a equalized
pressure in the injector. 10 psi of manifold pressure will increase the
fuel rail pressure to 53.5 PSI, or 43.5 PSI in the injector when open
(53.5 - 10 = 43.5 PSI).
Determine your fuel flow rate required.
A calculator
like this from RC Engineering will help. This will tell you what
capacity injectors and fuel pump is required. Remember to calculate
horsepower by crankshaft horsepower and to factor the correct fuel rail
pressure as described above.
example:
We will use a turbocharged 500 bhp 4 cylinder S2000 running 15 PSI of
manifold pressure for this example:
actual crankshaft horsepower = 500 bhp
number of injectors = 4
BSFC = .6
maximum duty cycle = .8 (80%)
system fuel pressure = 58.5 (43.5 + 15)
= 853 cc/min or 3,412 cc/min for the entire 4 cylinder engine
Thus, we know that our engine at 80% duty cycle, will require a flow
rate of 3,412 cc/min. To convert cc/min to lph, multiply by .06 (205 lph).
We suggest multiplying this result by 20% as a safety factor (and the
factor that the pump will rarely see 13.5 V). 205 * 1.2 = 246 lph.
Looking at our chart, we find that at 58.5 PSI and 246 lph, the
Aeromotive 340 HP pump would be the best choice.
specs
fitment:
S2000, 2000-05
Aeromotive 340 PH In-Tank Fuel Pump Kit - S2000, all years
![230-005[1].jpg (47329 bytes)](/products/exhaust_airflow_products/NSX/CT-Engineering/exhuast/230-005[1]_small.jpg)
The
Aeromotive 340 HP fuel pump is a direct-replacement for the factory fuel
pump in the S2000. This pump flows 340 liters / hour of fuel at 40 PSI
(see flow chart below). 
S2000, 2000-05