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With new fuel regulators can you increase performance?

with new fuel regulators, can you increase performance in any way? is it worth the cost?

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Old 10-16-2003, 09:39 PM
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Not likely, not w/out other (significant) modifications on your car, unless the current one isn't functioning as it was designed to.
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Old 10-16-2003, 10:22 PM
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Here is how the fuel system works on the car

(FR Wilk can offer a more detailed explanation, but this should suffice for the information you are looking for)

Fuel pressure is maintained at a constant by the action of the fuel pump, fuel pressure regulator, and fuel pressure dampener. The fuel pressure in the car does not change anywhere along the accelleration\power curve.

The DME controls the amount of fuel entering the cylinders by controlling how long the fuel injectors stay open on the intake stroke. Simply put, the longer the injector stays open, the more fuel you get.

The DME determines injector timing based on throttle position, air flow, engine temperature, altitude, (and on US models) emmissions, and finally engine speed.

In order to get any significant gain in performance, you would also have to increase airflow to the motor where the DME can "see" the increased airflow.

Bumping the fuel pressure without adjusting the other variables will likely result in an over-rich condition. causing the DME to try to "lean out" the car - shortening the injector pulse.

AFJuvat
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Old 10-17-2003, 05:52 AM
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So there!

Isn't it great where you can get the same performance increase wither you spend $100 or $1,000?

You want more performance buy a turbo.
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Old 10-17-2003, 08:06 AM
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Quote:
Originally posted by SoCal Driver
So there!

Isn't it great where you can get the same performance increase wither you spend $100 or $1,000?

You want more performance buy a turbo.
Nanner nanner.
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Old 10-17-2003, 09:20 PM
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My mechanic suggested we put in a high pressure Bosch fuel regulator to try and take advantage of the other mods and even trying and get the engine to run slightly cooler. To be honest, the impact is at best very modest (ie, hardly noticeable) in both performance and cooliing.
Save your money.
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Old 10-18-2003, 06:30 AM
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Yeah but if you chrome plate your fuel regulator and add a turbo exhaust tip you can add about a hundred horsepower!

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Old 10-18-2003, 09:15 AM
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