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thundermax

  1. CLASSIFIEDS - WANTED OR SELLING
    Greetings, I have a brand new ( still in the box ) set of D & D slip on mufflers for sale and a Thundermax Auto tune Still in box with Australian warranty. Unused with Australian warranty These lines are now deleted product from the Australian importer. I am located in Victoria...
  2. Zippers Performance
    I recently performed a spectacularly bonehead move in which I accidentally let the power cord on my laptop fall onto my exhaust during an Idle Air Calibration session. The result was a blown laptop (actually just a cheapo netbook), a blown USB to Serial Interface cable, and a blown Thundermax...
  3. Zippers Performance
    Here at Zipper's, we are all about Sportsters®. We cut our teeth and built our reputation racing Sportsters®! Between 1985 and 1995, Zipper's drag racing yielded 5 National Drag Racing Championships and set over 60 National and World Records. Building for both power and reliability, this...
  4. EFI maps....maybe
    The idea for this thread is to share Thundermax maps. It would be preferable if you list engine mods, airbox and exhaust so that others know what might be a good match for their system. Here is my current build Hammer Performance heads with oversize valves and 15 degree squish band Wiseco...
  5. Zippers Performance
    Hello, Everyone! Just wanted to let you know... Zipper's Performance Products has released two new products: RedShift Dual Piston Cam Chain Tensioners and Red Shift 525 Performance Cams. Both of these products are for 2007-Up Twin Cams - Sorry, not XR1200's. Some of you have more than 1 bike...
  6. EFI Tuning for the XR1200
    Have run Mr Zippers Thundermax on an 07 883 - worked very well, and on my FXDB - took a long time to sort out and get right. They're a great fuel/timing managment system and very flexible (and complex to sort out) but getting very pricey for a 90's architecture. You seem to favor the SERT or...
  7. HORSEPOWER FORUM
    A little dissappointed with the gains considering the price, but the weight savings alone was worth it. Looks like I might need to find a tuner familiar with the Thundermax.
  8. CLASSIFIEDS - WANTED OR SELLING
    Is $700 too much? It looks like they are going for $900 on eBay. Anyway, this one, obviously, is for the XR: Part #309-364. This device replaces your stock ECM and stock narrow band sensors. Take it off and replace it with this unit and the included wide band O2 sensors.. It works fine and...
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