I have been to the PCM Hacking forum with little success. A fellow posted his efforts at sorting out the idle issue that occurs when mating a manual gearbox to an L67. He'd changed the spark timing at low rpms and said it made a huge difference. I thought about doing that but go cold feet since I have absolutely no idea what I'm doing!
I'm also a member of a Facebook group for L67s set up by Brushworks Slick Sixes - "L67 and Turbo V6s Australia'. That's where I learned that a lot of people get the idle issue. Some just wind the throttle stop out a bit and that keeps the butterfly open just enough to prevent the engine stalling. I tried that and it worked but was not tolerant to hot starts when the engine would idle too high.
I also want to increase the boost and I understand that mafless tuning is the preferred method due to the MAF running out of resolution at very high airflow. A recent comment I received on the Facebook group was that there is no mafless tune available for TunerPro RT. I was told that if I wanted mafless and to keep the Delco, I'd have to find a tuner that used Kalmaker. I wonder how many of those there are left and how much support they get from Mr Kalmaker. His website is full of broken links and doesn't seem to be updated very often...
I've been watching supermang with great interest and had noted that they were planning to go Haltech. Al from The Skid Factory made a comment about tuning the Delco and said he didn't know how people did it, but good on them for giving it a go. That made me think that tuning the Delco is a dark art and perhaps left to wizards or those with supernatural powers.
All in all, I'm tending to go Haltech but need the funds - same boat we're all in, I guess.
Al from the skid factory is a great mechanic but by his own admission, he's not a tuner. They are also sponsored by Haltech no doubt so I'm sure there is no bias there at all....
A Delco Auto L67 tune with a manual will cause issues. There are a few tables that need adjustment. Find a manual ecotec tune and copy over the idle settings and the low RPM/airflow areas of the ignition maps.
Unfortunately most tuners will only touch certain ecu's, most will do LS stuff and aftermarket like Haltech which sucks for the V6 guys as the delco is a better ecu than most aftermarket ecu's unless you only care about making power.
You are correct, there is currently no MAFless option for the delco except Kalmaker.
street machine carnage series on youtube are fitting a l67 into a vn using a haltech ecu , you see at the 2m 38 sec
I like Carnage and I've been watching Scotty work on the VN/L67 and the show's name is very apt, spot on really because he indeed creates carnage. But hey, many parts come from sponsors or they are paid for with other peoples money so who cares when it blows up right?
