I?m tuning my Dads CTS-V and he wants a mild burble tune (I?m new to tuning) so I did it and it sounds really good. Only problem is when he is at 3k rpm in 3rd or 4th gear it surges kinda bad..I'm thinking it?s the max torque timing or main timing, I did the minimum spark base, idle adaptive spark base,
coastdown.
do you have a tune file and a log?
I gotta look for the log
Here is the log and file.Originally Posted by horsepowerguru
personally i would put those tables all back to what you had before and make it burble through the DFCO raise the [ECM] 18698 - Minimum RPM Rate to Disable DFCO: to 4000 and adjust the timing in both entry spark and exit spark and CFCO timing
Last edited by 3 GENS; 05-28-2023 at 11:48 AM.
I will try that. Thanks
What kind of entry spark and exit spark should I go?
Although you'll find that methodology you have in the tune will work for produce burgling, it will also create jerking as the driver goes from 35* of timing and hits the zero timing area. I dont like to pull timing like that from the main tables to create gurlging.
I tired that it give it a nice rumble. Do I take away timing under 4k or over?
Lower your entry blend time by multiplying.5 and take your entry spark down to 5 degrees from 4000 down. As for your exit spark it can also go to 5 degrees from 4000 down.
Alright I will try this thank you
you only need to change the spark coastdown for burble put the base and octane tables back as found. your surge is
from 0 spark in octane tables
Thank you but I got it to work through the DFCO
Hope he dont care about replacing o2 sensors.
2013 CTS-V Coupe M6 - 1 7/8" Headers, 3" x-pipe, stock mufflers, Airaid intake w/green filter, ID1050X injectors, DSXtuning flex fuel kit, DMS under hood tank, upgraded pump, 3/4" lines, griptec 2.4" pulley, solid isolator, 100mm idler, reinforced brick, MM mild catch can, AEM 30-0334 wbo2, 600whp/630wtq
The DFCO is gonna mess the o2 sensors up?
No the fireballs igniting in the exhaust that makes the burble sounds will. Also will burn up cats if he still has them.
2013 CTS-V Coupe M6 - 1 7/8" Headers, 3" x-pipe, stock mufflers, Airaid intake w/green filter, ID1050X injectors, DSXtuning flex fuel kit, DMS under hood tank, upgraded pump, 3/4" lines, griptec 2.4" pulley, solid isolator, 100mm idler, reinforced brick, MM mild catch can, AEM 30-0334 wbo2, 600whp/630wtq
Ohh phew had me worried for a sec it?s not running that rich, no cats
Okay, as long as its not popping and banging like the bmw boiz with their stage 5 burble tunes.
2013 CTS-V Coupe M6 - 1 7/8" Headers, 3" x-pipe, stock mufflers, Airaid intake w/green filter, ID1050X injectors, DSXtuning flex fuel kit, DMS under hood tank, upgraded pump, 3/4" lines, griptec 2.4" pulley, solid isolator, 100mm idler, reinforced brick, MM mild catch can, AEM 30-0334 wbo2, 600whp/630wtq
😂😂😂
in my experience the popping and banging happen when the cfco is set to not kick in. [ECM] 2299 - CFCO Enable ECT: ECT must be above this value to enable CFCO is set to 400 degrees it allows the fuel to continue flowing till the dfco kicks in that is when you get all the popping, banging and backfires that would kill an O2 sensor or cats. on manual cars
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