Sucking Some Serious Air

Natural aspiration is a beautiful thing to some. How to extract as much usable horsepower from your engine without the aid of supercharging, blow dryers, or laughing gas appeals to more than a few enthusiasts. Once serious travel begins along the all-motor route, many decisions have to be made, such as what cams to use, compression/ratio, ECU tuning, and any other variable you can imagine. When it comes to finding a solution for intake, it seems only three ideas are considered: a standard underhood intake, a cold air system, and a factory airbox or similar variation. Individual throttle bodies are often overlooked. Whats so good about this? For one, you are allowing each combustion chamber to have its own source of incoming air. The runners on the intake manifold are also shorter and more direct. However, ITBs are not CARB-approved, and depending on your setup, are not likely to be very street-able. The reason? The amount of air stuffed into the combustion chamber is great for high-rpm racing, but street driving in low rpm causes great suffering and increases gas consumption by a significant amount. Lets take a look as Elton at Raceline Development installs the Blitz unit on a B16A motor.

A quick look at the needed parts. You have the individual throttle bodies on the left, Blitz injectors (must have), and a VTEC/fuel controller (recommended).
A quick look at the needed parts. You have the individual throttle bodies on the left, Bli
Our poor donor engine before the shoot with a lonely single throttle body.

The installation begins with removing parts from the factory manifold. Disconnect the battery before starting any engine work, especially where fuel is concerned. Next, remove the throttle cable, current intake, and all sensors and hoses from the factory manifold.
The installation begins with removing parts from the factory manifold. Disconnect the ba

Make sure you remove the brake booster vacuum line. It can be found on the backside of the manifold.
Make sure you remove the brake booster vacuum line. It can be found on the backside of the
Using a small screwdriver, remove the clips holding in the injectors. These can be tricky, as the clip tends to snap back onto the injector.
Using a small screwdriver, remove the clips holding in the injectors. These can be tricky,

Remove the fuel rail and factory injectors. You will be using the fuel rail on the Blitz ITBs.
Remove the fuel rail and factory injectors. You will be using the fuel rail on the Blitz I
Remove the map sensor from the throttle body. Again, this will be used on the ITBs.

Unbolt the support bracket from under the intake manifold. This will give you clearance to reach all the bolts holding the intake manifold to the head. Now you can remove the manifold from the vehicle.
Unbolt the support bracket from under the intake manifold. This will give you clearance to
Remove the Thermowax valve from the manifold. This will also be used on the ITBs.

Begin assembly of the Blitz unit. Start with the intake air temperature sensor.
The Thermowax valve is now attached to the supplied Blitz adapter plate. This is important because it controls your cold start/fast idle on the vehicle.
The Thermowax valve is now attached to the supplied Blitz adapter plate. This is important

The Idle Air Control Valve is also connected to a Blitz-supplied adapter plate.
Make sure you use Teflon tape on all fittings for a snug, air-tight seal.

Bolt on all the necessary fittings for the Thermowax and IACV valves, as well as all the coolant lines.
Bolt on all the necessary fittings for the Thermowax and IACV valves, as well as all the c
The all-important PCV breather. Yes, it’s important, and, yes, Blitz made a spot for it also.
The all-important PCV breather. Yes, it’s important, and, yes, Blitz made a spot for

Attach the Blitz fuel pressure regulator plate to the fuel rail. This repositions the stock FPR to clear the new ITB unit.
Attach the Blitz fuel pressure regulator plate to the fuel rail. This repositions the stoc
Bolt on the IACV amd Thermowax valve using the OE intake manifold bracket as the mounting point.
Bolt on the IACV amd Thermowax valve using the OE intake manifold bracket as the mounting

If there are any remnants of the factory intake manifold gasket, now is the time to clean it off. A razor blade works great for this chore. A little water mixed with soap may be needed if some of the gasket will not scrape off.
If there are any remnants of the factory intake manifold gasket, now is the time to clean
Add the throttle position sensor to the Blitz unit with the supplied adapter plate.

Make sure you use a new intake manifold gasket. Translation: important for a complete seal.
Make sure you use a new intake manifold gasket. Translation: important for a complete seal
Install the ITBs to the head. Ahh, your engine will love you for this.

Install the Blitz injectors. Important: Only Blitz injectors will work with Blitz ITBs.
Install the throttle cable. Make sure cable tension is proper.

Using the new breather hose, connect the breather port on the valve cover to the ITB unit.
The TPS wires need to be extended so they will reach the new unit. You can use supplied connectors or hardwire. Hardwiring (soldering) provides a connection with less resistance to voltage drop.
The TPS wires need to be extended so they will reach the new unit. You can use supplied co

Connect the map sensor, TPS sensor, and all vacuum lines, including the brake booster. Install a VTEC/fuel controller, tune on a dyno, and be prepared for some serious high-rpm horsepower.
Connect the map sensor, TPS sensor, and all vacuum lines, including the brake booster. Ins

SOURCE
Blitz 4879 E. La Palma Ave. Ste. 206 Anaheim CA 92807	Raceline Development 9237 Lower Azusa Rd.,Ste. R Temple City CA 91780 6-26/-292-7030 www.racelinedevelopment.com