He opened up the box, stripped out the cat only. All the pipework in there is actually quite good. All the smaller diameter pipes add up to the 60mm exit so gas flow wouldn't be a problem. He then fabricated a new 60mm exit pipe that will take any 60mm can with spring clips. Got it all on the bike and it noise tested exactly 100db with the mesh cover he uses to break up the sound. Looks like a spark arrestor but does a really good job with sound too.
Took the bike to be tuned at Track Electronics on Wednesday and John managed to get 172bhp and 103.4ftlbs
He normally enjoys tuning bikes but the 1290 fought him all the way. There is a big dip near the top which he says is engine electronics. Couldn't do anything to get rid of it. If he had full access to the ECU like with TuneECU or Woolich he could get even more out of it. Fingers crossed TuneECU get there or Woolich get around the KTM ECU at some point soon. Off to Snetterton in the morning to test it on track. Should be a load more grunt throughout the range.
The red A/F line on the dyno chart is the map Dynojet said was 2017 stock bike. It is stupidly lean in places even with Akra map installed. When in the PCV it shows as 2014 bike. Nice job Dynojet
