When Ford redesigned the Mustang for '94, the car gained weight and lost horsepower. However, the aftermarket jumped on board quickly with a few tricks designed to increase power to close the performance gap. BBK Performance introduced its 65, 70, and 75mm Power Plus throttle bodies for the 5.0L V-8 for a 7-12 horsepower gain and comparable amount of torque. And with the 75mm Flanged Bullet mass air meter from PRO-M, count on even more power to complement the BBK throttle body, available from Summit Racing Equipment.
Installation of both the BBK throttle body and PRO-M mass air meter won't take much more than a couple of hours. Some minor tuning may be needed at the throttle body setscrew to achieve proper idle speed setting, although that's what the idle air control valve is for. It is suggested you treat your Mustang to a good dyno tuning at a reputable dyno shop to determine performance needs such as higher flow fuel injectors, a broader fuel map, ignition timing tweaks, and ECM calibration.
1 BBK Performance offers...
1 BBK Performance offers 65, 70, and 75mm throttle bodies for the '94-'95 5.0L High Output engines that are 50-state smog legal. PRO-M's 75mm Bullet mass air meter (right) complements BBK's throttle body package to offer a 10-20 horsepower increase with a corresponding amount of torque. Of course, much depends on engine health and tuning once you get the parts installed.
2 After disconnecting the...
2 After disconnecting the battery’s negative cable, air intake, mass air sensor, and air filter, you can disconnect the throttle cables—one for the accelerator and the other for cruise control. There is no throttle valve (TV) cable for the AODE automatics in '94-'95.
3 Throttle body removal is...
3 Throttle body removal is straightforward with a deep-well 1/2-inch socket. There are four flange nuts.
4 After removing the flange...
4 After removing the flange nuts, pull the throttle body away from the intake. Two electrical items, the throttle position sensor and the idle air control valve, need to be disconnected.
5 When placed side by side,...
5 When placed side by side, you can see the difference between the stock 60mm throttle body (top) and the 75mm version from BBK. What hindered power for '94-'95 was the small throttle body and an induction system designed to clear the '94-'95 Mustang's lower hood line. BBK’s larger throttle body clears the hood and allows improved airflow. Summit’s price is $219.99, plus taxes and shipping.
6 The new 75mm gasket is...
6 The new 75mm gasket is used as a template for upper intake modification. If you’re installing the 65 or 70mm throttle bodies, you won’t have to do this.
7 Block the intake with a...
7 Block the intake with a shop towel to keep aluminum particles out, then carefully taper the opening with a die grinder to allow a smooth transition from the 75mm throttle body to the upper intake. This also improves velocity and corresponding torque. When grinding is complete, vacuum the intake and inspect for debris.
8 The idle air control valve...
8 The idle air control valve is transferred from the stock throttle body. It adjusts idle speed via the ECM (engine control module), which allows air to flow around the throttle blade to increase the idle speed as required for cold starts or for other demands like air conditioning or high alternator loads.
9 The throttle position sensor...
9 The throttle position sensor is transferred next. Expect screws to be extremely tight with a thread locker from the factory.
10 The BBK throttle body...
10 The BBK throttle body gets this throttle position sensor spacer at the throttle shaft before sensor installation. This spacer ties the BBK throttle shaft and sensor together.
11 The idle air control is...
11 The idle air control is installed after the throttle position sensor. Don't forget the new gasket and clean contact surfaces. Do not use sealer.
12 The idle air control and...
12 The idle air control and throttle position sensor are connected before installing the BBK throttle body. Check for clean connections and use a high-evaporation rate electronic or brake cleaner on these connections if necessary.
13 After installing the gasket,...
13 After installing the gasket, the BBK 75mm throttle body is seated and tightened using a 1/2-inch deep-well socket. Do not overtighten.
14 Throttle and cruise control...
14 Throttle and cruise control cables are connected and checked for security. Work the cables and accelerator pedal to check for smooth and safe operation.
15 On the right is the Ford...
15 On the right is the Ford 70mm mass air meter for the '94-'95 5.0L. On the left is PRO-M's 75mm Bullet mass air meter. With the PRO-M bullet, you can grow your engine and not have to worry about larger mass air because this guy can be calibrated up to 42-pound injectors and 550 horsepower.
16 The air filter and bracket...
16 The air filter and bracket are assembled. This is an older version of the PRO-M system, so expect some differences between what you see here and what you receive from PRO-M today.
17 The air cleaner and PRO-M...
17 The air cleaner and PRO-M bullet assembly are installed and connected using the stock '94-'95 flexible intake duct. The bracket is pressed into place using the stock grommets underneath.
18 The closed crankcase ventilation...
18 The closed crankcase ventilation hose is reconnected. Before starting the engine, turn the throttle body setscrew so there is a .010-inch gap between the throttle stop and screw. Double-check the installation for security, then start the engine. Allow the ECM time to get acquainted with the BBK/PRO-M improvements. If idle speed is too high or too low, check the throttle to setscrew gap again.