Spoke to Mark yesterday from Quantune, he's answered some of my questions and confirmed the problem with tuning these cars as Hyundai messed with the Bosch ECU and thoroughly screwed up the ability to identify files without thousands of hours of research to decrypt and make sense of it all
the Veloster didn't get the same bastardized ECU which made them more easily readable.
Not all hope is lost though as there has been sufficient time now for the guys in the know to put in the valuable hours needed and they do have the capability to adjust several more AFR and timing files so I'm going to run the toy up on their dyno next week and see what they have to say...hopefully just a bit more timing advancement and leaning out a few areas in the AFR's can now easily be fixed.
I've already made a change to my exhaust (again
) ditched the bottle 150cpi catalytic converter due to lacking flow rate and ability to clear up the o2 mixture correctly which threw an occasional o2 engine code on cooler weather days, replaced the bottle cat with a Euro 4 type ceramic cat which will compensate for not having 2 cats...a pre and post Euro 3 type catalytic converters.
Euro 4 cats have a much higher metals content giving better cleaning results and are also larger giving increased flow due to larger surface area, it's working well so far and can feel a slight increase in bottom end torque and it's also knocked a couple of decibels of the exhaust note which was annoying me around the 100kph limit.
