The following is the most frequently asked questions about our products. If you have a question regarding one of our products that is not covered here, please call 901-396-5782 or email us at info@performancedistributors.com.

Q: How does Performance Distributors DUI distributor compare to a multi-spark ignition system?
A: The DUI is not like the multi-spark systems that utilize an external capacitive discharge ignition box. The DUI is a one piece ignition system with no external components. The DUI incorporates a high dwell module inside the distributor that increases the coil saturation time. The longer saturation time makes the coil produce one long duration spark as compared to several multiple sparks. The longer duration spark will improve throttle response and low end power. In conjuction with our 50,000 volt coil, spark plug gaps can be opened up to .055". Most spark box systems recommend a gap of no larger than .045". The DUI's coil and module only draw 2-3 amps. Most spark box ignitions draw anywhere from 6-10 amps. The lower amperage draw of the DUI allows it to run cooler, making it more reliable than the spark box. The less amperage draw is very important if you are a racer that just runs a 12 volt battery with no alternator. Most importantly, the DUI distributor is custom tuned on a distributor machine for your vehicle and engine. This custom tuning insures maximum performance and eliminates detonation. This is a service that the other ignition companies do not provide. Instead, they'll send you a curve kit so that you, the customer, can figure out your own advance curve.

Q: Where is number one on the DUI distributor?
A: No particular terminal on the DUI is designated as number 1. When you bring your number one cylinder up to top dead center on the compression stroke, you can drop the distributor in and point the rotor toward any terminal that you want to make number one. Once you establish which terminal on the cap is number one, follow your firing order from that point.

Q: What information do you need to custom curve the distributor for my application?
A: We need information about the vehicle and engine such as cam duration & lift, compression ratio, carburetor size, vehicle weight, towing weight (if applicable), maximum rpm, transmission and octane of fuel. If you have a supercharger, we need to know the maximum amount of boost it produces. Also, if you run a nitrous kit, we need the horsepower rating for the system you are running.

Q: How much horsepower will I gain with the DUI?
A: It is hard to say exactly how much the DUI will increase horsepower. Too many parameters are involved to answer this question with an exact answer. On average, the DUI will produce an increase of 15-20 horsepower over a stock ignition system. Your engine may see more or less depending on other modifications. The DUI has been dyno tested to provide 40 more horsepower over a stock GM HEI! Unfortunately, we cannot guarantee this this type of result for everyone. But in most every case, the DUI will provide a noticable increase in performance and fuel mileage.

Q: Why don't you sell your curve kit separately?
A: We do not sell our curve kits separately because our specialty is tuning the weights and springs on a distributor machine for the customers application. This provides a more accurate timing curve and eliminates the guess work for the customer.

Q: Are replacement parts hard to find for the DUI?
A: No. Stock GM HEI parts such as a module, coil, cap and rotor can be used on the top of the DUI distributor to replace a possible bad part. These can be found at any local auto parts store. Granted, the stock part will get your DUI running in case of a breakdown but it will not provide the same performance as the original DUI parts.

Q: What is the resistance per foot on the LiveWires?
A: The LiveWires measure 300-350 ohms per foot resistance.

Q: What is the warranty on a DUI Distributor?
A: The Street/Strip version of the DUI has a one year warranty. The Racing version has a 30 Day warranty. This warranty covers all parts and labor.