| DYNO PROVEN TO PROVIDE THE LARGEST HORSEPOWER GAINS FOR THE 03-04 FORD MUSTANG COBRA
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 STRATEGY
In keeping with our goal of providing our customers with the best possible value, we have tested a large group of components specifically designed for the 03-04 Mustang COBRA.
We have invested many hours evaluating and refining each of the Cobra products on our chassis “dyno”, to ensure that we could develop as much power as possible, as safely as possible.
End result is our now available "Dyno Tuned Options".
Our site menu on the left side of this page, lists the clear winners when it comes to “performance vs. dollar” value. Please check back often as we are always developing new ways to create more horsepower.
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"BOOST BYPASS" Installation Instructions
FREE "HOW TO"
2003 - 2004 SVT COBRA
We have received thousands of phone call and e-mails asking us if we sold a boost bypass kit.
We looked around to find out who was selling boost bypass kits and we were shocked at what we found. There are dealers selling this simple modification for up to $30.00.
While the parts needed for a boost bypass kits can be purchased for their so called boost bypass kit for less than $5.00, many dealers inflate that price just to provide the instructions necessary to install these kits. While we do not sell the kits, we don’t think you should pay for basic information that should be part of customer service from you performance dealer.
RPM Outlet will provide the instructions for installation at no charge. This allows you to realize all the benefits of these kits without spending money on what amounts to, paying for words.
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Disclaimer: This modification is for off-road use only. This modification may violate U.S. laws and regulations and emission standards.
What is a boost bypass valve?
The bypass valve is integrated in the supercharging system. When low engine power is required, the bypass
allows air to enter the engine without passing through the supercharger. The supercharger bypass valve
operates in the following manner:
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- Under normal engine operating condition vacuum is supplied to the bypass valve.
The valve opens, diverting excess airflow back into the air plenum. This prevents the
supercharger from “cavitating.”
- Cavitating causes reduced performance, increased temperature, and poor fuel economy.
- At high engine demands, vacuum is removed from the bypass valve causing it to
close. This directs all airflow from the supercharger to the intake manifold.
- The supercharger boost (SCB) solenoid is used to control intake manifold vacuum to
the vacuum bypass actuator. The PCM transmits an output signal to the SCB solenoid, which
activates the solenoid to bypass vacuum when the
engine is under maximum boost, reducing the boost pressure by up to 3 PSI.
- Click-On Printer image for Supercharger airflow diagram.
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Purpose of a "Boost Bypass Modification"
The purpose of a "Boost Bypass Modification" is to supply continuous boost
from your supercharger when engine is under maximum boost limits set by the factory.
When acceleration exceeds factory limits (8 psi).
With our boost bypass modification, you will now be able to keep your boost at the maximum level when under WOT usage. The term “boost bypass” is a bit misleading by all those dealers advertising this kit for a price. Its true name should be, WOT bypass eliminator kit . . . This modification does not effect normal engine operation and is designed for modifying boost bypass at WOT only. (WOT= wide open throttle)
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Parts needed to bypass boost:
- Vacuum Line
- Vacuum T-fitting connecter
- Vacuum elbow fitting
- Vacuum boot cap
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Parts needed to bypass boost:
- Vacuum Line
- Vacuum T-fitting connecter
- Vacuum elbow fitting
- Vacuum boot cap
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BOOST BYPASS INSTRUCTIONS
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Below are the easy to follow instructions detailing how to maximize your boost
performance on your Ford supercharged vehicle. Unlike other companies, RPM will provide these detailed instructions at no cost to you. At RPM Outlet, we do not charge you for knowledge.
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Step 1. Locate the boost bypass actuator solenoid and the boost actuator. It’s on the driver’s side of your supercharger towards the back of the engine.
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image 1a
Step 2. The boost bypass actuator solenoid has two vacuum lines and a two wire plug right above the lines. Take the vacuum line connected to the top of the solenoid and unplug it.
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image 2 |
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Step 3. Disconnect the vacuum line (red circle) connected to the boost actuator.
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image 3 |
| Step 4. Take the line from step 2 and plug it into the boost actuator (red arrow).
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BIG OVAL Throttle Body (30+hp)
TRUEFLOW DRY-FLO Cold-Air (25+hp)
FIPK® Cold-Air (30+hp)
Cleaning / 
Filter Breather Kits
90/95mm MAF/Adaptor Kit/Hoses
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PREDATOR Flash Tuner 
LIVEWIRE Flash Programmer
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SC EXPANSION Tank Upgrade
160º/180º LOW TEMP T/Stats
Gear Sets, 3.73/4.10
Performance Gears, 3.73/4.10
LAKEWOOD BFL® Racing Gear Lubes
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Stage I/II/III Camshafts/Spring
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2 1/16 inch dia. Gauges
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DIRECT-FIRE Modular SuperCoils
Multi-Spark coil-on-plug
Copper / Iridium Spark Plugs 
Performance Spark Plug Kits
™ Nitrous Oxide Systems (35-175 hp)
Boost Coolers 
Tubular K-Member / Coil-Over Kits
PRO-KIT Lowering Spring Kit
Sub-frame Connectors 
Dual-Friction Clutch Kits
Street-Strip Clutch/Flywheel Kits 
Mustang Performance Shifters 
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Drag Radials / Drag Slicks
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