Hi Nigelsandbar wrote:There are a lot of good things written about the Rexxer system, but it seems to me that there is a bit of confusion. Surely it is the actual map that gives the performance, and whether or not that map is delivered by a Rexxer rewrite, a RapidBike or a PC should not make any discernable difference. Remember, no two bikes require identical maps for perfection!!gus wrote:i would say having a map blown into the ecu is the way forward at this present time regarding getting the best out the motor regarding power, how that power is delivered and how efficent it does it. I need to get mine done and compare it to the pc3 i have fitted. i will make a few phone calls and try and get it sorted in the next couple of weeks. It will be going to ducati coventry to have a REXER map blown in .
I accept that if you were Crutchlow, Lorenzo or Pedrosa you might be able to just notice the micro delay inherent in the piggy-back systems, but if you were one of those guys you would not be in that position anyway!!
IMHO it is the actual map that is important and that is down to whoever writes the Rexxer map, does the dyno work on a PC or the effectiveness of the Auto Tune facility on the RapidBike. In addition, the RapidBike or PC can easily be removed or bypassed
I also suspect that you would not get much sympathy pursuing any warranty claim (normal, goodwill or otherwise) when the BMW computer system detects that the ecu has been 'flashed'.
Just as an aside, it may well be that the whole Rexxer system has got a limited life. The protocol that manufacturers have to make available the access codes to their electronics is coming to an end soon, and a lot of the manufacturers are already encrypting the ecu codes. I am told that already there is no way to 'flash' or 'chip' the very latest cars. Piggy-back style modules are, apparently, the only way! Luckily this does not affect the bikes that we are talking about here, although I suspect that it might apply to the 'water cooled' Boxer.
sandbar
All good points raised .
You need a good operator to understand how to tweak the map that rexer will send for your bike configuration. I,m interested in what else can be done regarding ignition, sensors etc . The PC 3 lacks this facility. Some other piggy back units allow you to do this. I don't know the complete scale of what can be done.
Also I want to tidy up the bike regarding wiring and as the quickshifter ecu is sharing the same space as the PC this would free up some room.
My bike will never see a dealer for servicing so that's not a problem for me. It maybe for others.
And your right, manufactures will get wise and try and stop this modification of ecu,s.
As it stands at the moment a ecu reflash is also the most cost effective over a piggy back unit. Although you don't actually own any hardware!!
Gus