TNT Performance Dyno
Motorcycle Tuning, Service & Performance Parts Center
219-B Shady Grove Road  Nashville, TN 37214
(615) 874-1005

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2002 Harley Davidson Road King (Custom Mapped by Konrad with the Screaming Eagle Race Tuner) Jack M. from Clarksville, TN outfitted this '02 Road King with a factory 103 kit, Super Trapp 2:1, Screaming Eagle intake,  and the Screaming Eagle Race Tuner loaded with one of Harley's pre-made maps.   Jack found that the Race Tuner's pre-made maps did not work well with his choice of aftermarket exhaust so he brought his bike to Konrad for custom mapping.  The blue lines on the graph above represent the bike's horsepower, torque and exhaust ratio at 100% throttle prior to tuning. Horspower and torque numbers both peaked in the high 90's but the exhaust analyzer showed a very lean condition below 4000 RPM and an overly rich condition from 4000 to 6200 RPM. Jack's seat-of-the-pants dyno confirmed the fuel mix was off as he experienced an uneven power band and complained of flat spots. After a few hours of adjustments on the dyno, Konrad brought the air/fuel mixture to a steady state of maximum efficiency all across the RPM band. Not only did this eliminate the flat spots Jack experienced, but it resulted in gains of nearly 10 horsepower and 11 FT LBS of torque. Not too shabby, eh? MAX HORSEPOWER: As received = 97.9    After Tuning = 107.6         MAX TORQUE: As received = 95.9   After Tuning = 106.2

2007 Harley Davidson 96ci Road Glide (Part 1) Horsepower                                                                       Torque   Here's one for those of you wondering how the 2007 Harleys are performing. Back in October our friend Alan Temple of Nashville brought his stock 07 Road Glide in for a base line run. The dyno readings were 67.9 horsepower and 84.0 Ft LBS of torque (as represented by the blue curves on the graphs above). A few weeks later Alan kicked his results up significantly by adding a set of Screaming Eagle Street Legal Mufflers, a K&N High Flow Air Filter, and the Dynojet Power Commander with a downloaded map. The results of these modifications (73.6 HP & 90.3 FT LBS of torque) are represented by the red curves on the graphs above. Our next step was to further increase the air flow with the K&N Custom Air Filter Kit and create a custom fuel injection map on the dyno. This K&N Custom kit works with your factory air filter cover & features an integrated velocity stack. We really like it & definitely recommend it. Click here for more info on K&N's Custom Air Filter Kit Click here to purchase - $157.95   The day after Alan left our shop he used the bike's new-found power to dodge a red-light-running cager. Just another example of the importance of a responsive, well-equipped & well-tuned motorcycle. --------------------------------------------------------------------------------------- 2007 Harley Davidson 96ci Road Glide (Part 2) Horsepower                                                                       Torque  Seasoned bikers like Alan know that winter is the best time to make major performance upgrades. So once temperatures dropped Alan lined up some headwork with John Hildreth of Hildreth Performance in Madison, AL. Hildreth has a consistent record of satisfying customers we refer to him so if you're wondering who does excellent headwork be sure to check him out. Once the headwork was complete Konrad removed the Screaming Eagle slip-ons, installed a D&D FatCat 2:1 and remapped the Power Commander for the new configuration. The two graphs above showcase the drastic evolution of Alan's Road Glide and the gain of nearly 30 horsepower to his 96ci motor. Final Max Horspower: 95.9     Final Torque: 98.0

Yamaha V-Max If you've never experienced  take-off on a V-Max before, I can only advise you to be prepared. Get a good grip on the machine or you may soon find your eyes focused on twinkling stars above as you lay in the dust wondering what just happened. At least that's how it can go with a properly equipped, jetted & tuned V-Max. Our customer, Brian, brought his power house from Knoxville to the shop in Nashville looking for a remedy to its wavering throttle response. Our initial diagnostics showed the bike was putting out max numbers of 104.7 HP & 68.9  Ft LBS of  torque. We knew from dyno time with other V-Max's that Brian's numbers with his Kerker 4:1 exhaust were well below stock, proving once again that aftermarket modifications must be made in conjunction with carb jetting  / fuel-injection mapping adjustments. After installing a Dynojet jet kit and much careful experimentation with various baffles Konrad delivered nearly 20 additional horsepower and 15 FT LBS of torque. Though Brian's horsepower & torque gains are impressive, he's most pleased with the improved throttle response. In Brian's own words, the difference is "like night & day."  Here's Brian's actual testimonial: Konrad and Melinda,         I finally got some fresh tread on my VMAX and was able to push the bike to it's limits to get a real before and after performance test. Two words came to mind after my first straight line run......HOLY ****. I cursed Konrad for a couple of minutes before a smile began to appear that stayed on my face so long that it began to hurt. I am the second owner of this bike and I have logged the majority of it's miles and it has never performed at this level. The throttle response is instant, the power is constant and it gets 12 miles to the gallon better gas mileage than before. I took this bike to a local shop in Knoxville, then to the dealership and finally made the three hour trip to TNT. I wish that I had come to see you guys first. I have never felt so comfortable and had someone take the time to explain how the bike works and how it could work better. I do not usually take the time to write thank you letters but Konrad's knowledge mixed with his and Melinda's personalities is a combination for success and deserving of praise. I write this so that the reader may be able to save some time and money by not making the mistakes that I made by going some place else. Thanks, Brian Thomas, 1999 Yamaha VMax ... Sent 10-20-06

2003 Harley Davidson Heritage Softail One of our local Harley shops referred this 2003 Heritage Softail to us for some well-needed fuel curve adjustments following aftermarket modifications including a Roadhouse 2:1exhaust, S&S gear driven cams, Arlen Ness BigSucker  Kit  and  Stage 1 download from Harley. The  bike's owner still experienced bad hesitation in 3rd & 4th gears, at about  3500-4000  RPM. The graphs  above show us why the bike's performance was lagging in those specific areas. The bottom portion of the graph addresses the air/fuel ratio, which in general should hold at 13:1 all across the RPM band. The red line, which shows before mapping results, indicated lean settings between 3500 & 5000 RPM. Check out the HP & torque curves in the upper portion of the graph & you'll notice the dips in the red lines which correspond to the lean portion of the fuel curve.  To correct  this condition Konrad added fuel to the appropriate map cells. The graph's blue lines show the after mapping results. The air fuel ratio is now at a steady 13:1 all across the RPM band and the dips which previously existed in the horsepower & torque curves are now eliminated.  Proper tuning resulted in gains of 3.2 peak HP & 8.1 Ft  LBS of torque and the customer's riding experience is noticeabley improved. So  now  this bike is adjusted to its aftermarket modifications, but is there  still  room  for  improved  performance?Yes, there is. Konrad says he'd like to see  the  bike  reach  maximum  torque at 2500 RPM instead of 4000 RPM. How could this be achieved? Maybe headwork and/or exhaust changes. If our customer is interested in bumping it up a little  or  alot more  we'll  keep  you posted of his modifications and the resulting performance improvements.

2005 Honda CBR1000rr Repsol Horsepower & Torque Chart Air / Fuel Graph The above graphs were sent to us by the bike's owner, J. Orrand,  as he viewed them with Dynojet's Run Viewer Software. J. is a computer / bike wiz so of course he wanted to study his runs in depth and share his results with the interested world. He's been in to dyno test several performance parts for his bike in the past.  After figuring out which performance parts he wanted to add to his CBR1000RR, he came in to have Konrad create a custom Power Commander map for his bike to insure he was getting the most out of the performance additions.  His current aftermarket performance parts include the notorious Honda Flapper Mod, which allows more air to enter the air box at lower RPMs, an Arata Titanium slip-on, and BMC race filters. As the blue line on the Air/Fuel graph above shows, the CBR1000rr was running a little on the rich side from about 5000 RPM all the way to 12000. Konrad worked with this beautiful Repsol for appx 3 hours, adding and removing fuel as necessary in hundreds of different fuel cells. The graphs above show that proper tuning gave the bike about 6 more HP & 3 foot lbs of torque all the way across the RPM band, as you can see on the Horsepower / Torque Graph (blue line is before mapping, red line is after). Now you want to know what good any of this tuning is when you're not showing off your dyno graphs. Here's what J. had to say: "...Not only does the bike pull harder, the power is much more linear and smoooooooth. On and off throttle transitions are now seamless and the bike is much more enjoyable to ride. ..." Read J's complete remarks on his web-site http://www.hooliganbiketech.net/  which he built "To provide modification, technical, and maintenance information on the Honda CBR1000RR motorcycle to make it an all around better motorcycle for the street while considering safety, performance, durability, and cost."