I'm working on a 2015 base corvette with an A&A supercharger system. The maf dialed in fine at wot and the car is making about 600 rwhp with nothing more than the kit at around 7.5 lbs of boost and an alky control system. However the car drove horribly at part throttle/light load and low rpm which I feel is the due to the 4" charge pipe and the location of the maf before and after a bend.
So, I'm trying to tune the vve and I'm not having much luck. Up to this point, everything I've tuned with vve was done using the old 2.24 version of software with the bluecat tool and never had a problem. Now I'm using version 3 software for the first time and using the built in ve tool to dial things in and I'm not having any luck.
It seems that we have a terrible lean spike when we cross the rpm zone 2-3. I've change the rpm setting for that zone and our lean spot moved with the rpm setting we changed.
I know with the Bluecat tool it would change map and rpm zones automatically but this program doesn't. It would seem logical to change the map/baro ratio zones to something to fit our new map sensor but what reason is there behind tuning the rpm zones? I do have the baro sensor separate from the map sensor now also.
I also just realized that changing the zone settings will change the entire look of the ve table itself? What am I missing in terms of the whole process of tuning the vve using this new program on a gen 5 engine/vehicle?
I changed the rpm and map/baro scaling to fit our intended ranges.... I downloaded a tune file for a c7 z06 and noticed that even it does not go to a very high map/baro ratio, it only went to something like a 1.3. Why would that be the case and maybe even a more elementary question I have is why does the ve that is generated on a stock car always look so screwed up? All of the earlier stuff I have tuned with the bluecat tool I just put in the basic shape and values for the ve that I thought made sense and worked from that dialing in my afr error and everything always went smoothly. In order to dial this thing in using the fuel trims or the afr error from my wideband would lead to around a 25% increase in ve at the rpm zone 2-3 boundary.
I have copied and pasted the generated ve from the intake manifold runner closed to the intake manifold runner open values also to make sure they are both the same.
Any advice on what step I'm missing in this process or how and why the rpm zones would be adjusted would be much appreciated!