Modify Range of Spark Table for High Boost application

[nash8503]

I have a 2014 CTS-V with a Dart Block 7.0L, Mast Black Label 6 bolt heads and a Kenne Bell 4.2L Blower. Right now I am running a 4" upper pulley and making about 17 lbs of boost. I am swapping pulley to a 3.5" and expect to see around 21 lbs of boost. The question I have is in regard to the the spark table cylinder airmass maximum range. The stock table maxes out at 1.36 (g). I am already running about 1.6g and I am anticipating 1.8-1.9. So my question is, should I modify the header on the spark table and change the increment from .04g to maybe .06g to increase the max closer to where I expect to be running?

[SultanHassanMasTuning]

not sure if the axis is editable on the E67 pcm

but you can scale the tune to lower the cyl airmass

[sgod1100]

Yes you can edit the axis of the cyl. airmass on the E67

[sgod1100]

I have a 2014 CTS-V with a Dart Block 7.0L, Mast Black Label 6 bolt heads and a Kenne Bell 4.2L Blower. Right now I am running a 4" upper pulley and making about 17 lbs of boost. I am swapping pulley to a 3.5" and expect to see around 21 lbs of boost. The question I have is in regard to the the spark table cylinder airmass maximum range. The stock table maxes out at 1.36 (g). I am already running about 1.6g and I am anticipating 1.8-1.9. So my question is, should I modify the header on the spark table and change the increment from .04g to maybe .06g to increase the max closer to where I expect to be running?

Yeah, I would do that if I were you. That way you have more control over your spark above the stock 1.36g. Otherwise everything above 1.36 will just be what you put in that 1.36 row

[nash8503]

Awesome! Thanks for the feedback!

[sgod1100]

I had to do the exact same thing you need to do on my ctsv. I keep the stock .04g increase all the way up to .88g. From there i went to a .08g increase. That allowed me to increase the graph to 1.84g. Its nice to have the option of adjust timing of those higher air mass cells

[kingtal0n]

another option is afr advance
whatafradvdoes.jpg