Don Performance-Harley-Davidson Street Glide Special put to the test

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Don Performance-Harley-Davidson Street Glide Special put to the test

The tuned Harley

Performance makes you relaxed and relaxed. That’s why a tuner from Bremen makes the new eight-valve engine of the Harley-Davidson Street Glide legs. Something’s going on: up to 50 percent more performance!

Andreas Taphorn, called Don, repairs electronic components of cars in his company. Now the Bremer is helping with his tuning label Don Performance Harleys, with its own dynamometer for fine-tuning on site. Don’s “Mapping Manipulator” is innovative: it is child’s play to plug in and operate, and changes the values ​​of injection and ignition in an instant. Don’s private Harley-Davidson Street Glide Special is a statement on wheels: In the USA, this stylish air-cooled model is traditionally the best-selling Harley. New hardware from Don Performance for the current “Milwaukee Eight” has been changed. Namely the "Stage 3 Kit" from Harley’s own tuning division Screamin ’Eagle. Cylinders installed by the Bremen authorized dealer Harley Container pump the eight-valve V2 to a full 114 instead of 107 cubic inches. In the metric system, that makes a whopping 1,868 instead of 1,745 cubic meters! There is also a new camshaft with “center / top plus” adjustment and the higher compression ratio of 11.0 instead of 10.0 to 1.

Don Performance-Harley-Davidson Street Glide Special put to the test

The tuned Harley

That is pure rumble of thunder

But the screaming eagle (which means Screamin ‘Eagle translated) is only completed by the open power air filter that is in the way of the right lower leg, and above all open-hearted Akrapovic exhausts (with ECE type approval only for Euro 3 models ) thick bends of crusher: inhale and exhale more freely. If the flaps in the exhausts are set to pull-through using a knob and cables, the trumpets of Jericho blow the storm at the start. This is pure rumble of thunder plus a rumbling thunderstorm in push mode. It feels like the seals are jumping out of your teeth. Closing the handwheel quickly is better for the neighbors. We say extremely relaxed Harley-Davidson Street Glide Special with the characteristic, huge batwing fairing, the six loudspeakers are pure waste: music comes from below. And, does the macho bike really have that much more steam and smoke, thump and thrust? When rolling through the city, it doesn’t feel like it at first. No wonder: Up to 3,000 tours, the tuning and production engines have almost the same output, with very similar performance curves. Only then does the Black Bomber really get going.

50 percent more performance at the top!

From the 4,000 mark, which corresponds to over 160 km / h in sixth gear, 140 in fifth, the V2 bumper cannot be recognized again! The way he pushes and pulls the trigger on country roads and the autobahn is awesome. Has anyone ever experienced an ultra-long stroke engine that is so easy to turn – 102 mm bore meets 114.3 millimeter stroke! The current standard Harley-Davidson Street-Glide Special showed real 80 hp and 134 Newton meters in MOTORRAD 23/2016 – Harley promises 90 and 150. This discrepancy was proven by several re-measurements. But performance is no longer an issue: the bold tuning V2 casually lifts 119 PS and 159 Newton meters – roaring loud with "performance mapping" and an open exhaust flap. Hey, that’s 50 percent more power at the top! Even if the 403 kilo suitcase (!) Closes the flap in TÜV-compliant street mode, 109 horses and 155 Newton meters storm ahead – even with a fuller torque curve below. On a wet road, the additional rain mode takes away the fear that the rear wheel will overtake you when you accelerate.

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