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Dyno Test - ABD Quick Flow install on 2.0 Golf
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    SoCalEuro Member daygoVR6's Avatar
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    Oct 2003
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    Dyno Test - ABD Quick Flow install on 2.0 Golf


    Words and photos: Brad Harvey - daygoVR6 socaleuro.com

    When people start modifying their car for better engine performance most modifications start simple. An aftermarket intake system, changing the exhaust piping and muffler for something that flows more air are typically the first things to be swapped out. The true question in our quest for power is are these modifications actually working? Most small modifications on engines don’t usually result in a major change in horsepower unless you are on a racetrack or a dynamometer to view the actual results.

    Strapping another one on, the Dyno Shop staff prepare John's Golf for a run
    Our test subject for this article is John Tagle’s MKIV Golf, with the factory 2.0 liter 8 valve four-cylinder engine. Most VW enthusiasts don’t refer to these cars as having very much potential when it comes to horsepower numbers since they are more designed for economy and gas mileage when compared to their 1.8T and VR6 predecessors. We decided to put it to the test and see if the modifications we are doing are actually creating more horsepower and torque, or if our hard earned dollars should have gone elsewhere. Our testing was done at the Dyno Shop in Santee, California where we strapped the car onto a Dyno Jet machine to get our test results. Dyno Jet dynamometers specifically measure the horsepower from the drive wheels of the car by calculating the rate the vehicle's drive wheels turn the large rollers they sit on while the it is accelerated up through its RPM range. Our test results came from running the car in 3rd gear to give the most accurate results possible for this test.

    Here is the engine bay without the ABD unit installed

    John’s MKIV already has the aid of an aftermarket Magnaflow cat-back exhaust system to help reduce back pressure and help reveal some extra ponies. In this test we are taking out the stock intake box and installing an ABD Quick Flow intake system (part number 70.Q80.) The system is installed by removing the stock air cleaner assembly along with the air filter and replacing it with the ABD unit which, includes a high-flow air filter and air intake pipe that attaches to the mass air flow unit along with an aluminum mount for stability. Installation time takes around 30 minutes and easily done in your garage with some simple hand tools.

    After a short amount of wrench time the stock air cleaner assembly was removed and replaced with the ABD Quick Flow Intake
    Our first run on the dyno was to establish a baseline number before we went ahead and installed the ABD unit. The Golf gave a horsepower number of 104.2 with 115.3 ft. lbs of torque. Not bad for a basically stock engine with a cat back exhaust system. Once the engine was brought back down to idle and cooled off, three pairs of hands removed the stock air cleaner housing and filter and installed the ABD Quick Flow unit. Installation was pretty easy with the three of us and we still had some time to spare to let the engine cool down a bit more before making another dyno pull. What happened next baffled even the guys from the Dyno Shop facility. After a healthy run in 3rd gear again for the second go around with the ABD system we actually lost two horsepower with a final number of 102.6 horsepower and a torque curve toping out at 111.8. Although, if you look closely at the two dyno runs and take a look at the air/fuel ratio curve at the bottom of the dyno sheet, (see copy or dyno run sheet at bottom of page) you can see with the ABD unit installed the MAF was reading the extra air flow into the engine and telling the on board ECU to dump excess fuel into the combustion chamber. This was adversly causing an overly “rich” condition causing our loss in horsepower. The remedy for this would be either an adjustable fuel pressure regulator to help stabilize the amount of fuel flow thru the engines fuel rail or possibly an aftermarket chip or re-tuned ECU.

    Here is our test subject with the ABD unit in place of the factory air cleaner assembly
    The proof is in the numbers. (see copy of dyno sheet at bottom) ABD does make a good unit I was impressed with the ease of installation especially for those that don’t know what they are looking at when it comes to being under the hood of the car. The ABD Quick Flow intake system is priced on their web site for $169.95 under part number 70.Q80. Our testing did leave us wondering what kind of results we would have gotten if we tested out ABD’s Big Bore Intake pipe mated with their Quick Flow system we tested here.

    Autobahn Designs
    2900 Adams St. Suite B-27
    Riverside, CA 92504
    Phone: 951-351-9566
    Fax: 951-351-9575

    The Dyno Shop

    10042 Prospect Ave,
    Santee, Ca. 92071
    Phone (619) 562-3933
    Fax (619) 562-2068
    Toll free (888) DYNO SHOP

    Here is a copy of the dyno run sheet, red lines are with the ABD Quick flow, blue lines are with the stock air cleaner installed
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