the first couple of times I had my bike dynod , the tuner had very little to say and just got on with the job in hand . when I returned recently , he remembered me and was far more responsive to my questions . knowing they supply and fit the PCV, I had it in my head to buy an AT and have them fit it . on asking him , he shook his head and replied he no longer stocks them and if he did , would advise I do not fit one ! now I'm no competent computer user , and certainly no tuner , so I found it hard to understand the information he started to furnish me with . considering the fella tunes the bikes of TT racers and a couple of BSB contenders , I tried to absorb the info with no doubt he knows his stuff . He mentioned that Triumph , KTM and others use the same make of ECU .He was working on a KTM LC 4 track racer fitted with pcv and AT when he started to find anomalies in the figures manifesting themselves as dips in the dyno hp and tq figures . so started an investigation , the results of which were that the AT was somehow corrupting the bikes ecu , The owner was more than happy with the peak power it felt like the bike was producing , but it was in fact running dangerously lean at wot and way too rich everywhere else . The figures were spot on but the bike wasn't making peak hp or tq according to the dyno readings . the fuelling and AF were dangerously off at wot altho showing optimum on the AT . if the owner had not visited the dyno . a catastropic failure was imminent . He also tuned a couple of Triumph TT bikes via tune ecu which he had been using since its conception . again , both bikes were doing exactly the same. the tables and percentages were spot on but again the dyno told a different story . again , the tune ecu program had somehow corrupted the ecu , for example , showing secondaries 9at 100 % when in fact they were actually at 50 . Or temp at 98 when in fact it was 103 . He concluded that the software in the AT and tune ecu had been somehow corrupted, in the case of tune ecu maybe maliciously during download ? he said that his tune ecu use is restricted to diagnostics and testing and that's it .many people have downloaded the tune ecu app he added , but unless you disconnect that computer ,/ phone from the interweb permanently after installing the app , the app can be more corrupted each time you switch on . every person he has had in for a Dyno run after they have improved their bike 2 fold by downloading tunes or adjusting the tables in the tune ecu , have turned out pretty disillusioned once they get the read out .. a new PCV, connected to nothing other than a fully calibrated dyno will give the truest readings and results possible . the bikes ecu can also be adjusted via the dyno but the parameters of adjustment is relatively small on all stock ecus and the parameters of adjustment via the 02 sensor , is even less . I think this was mainly the info he was trying to explain to me ? I may have completely misunderstood him and just written a load of old bollox , but if feasible , the tech heads here will understand and can either deny or confirm any of what I've written ?
