I made with C&L around 417 and 28-29 timing 93 octane, also with cats, but i don't know what mufflers were there.
Eastern and Central Europe American Muscle and Harley-Davidson tuning
www.hd-customs.pl
http://www.facebook.com/hdcustomspl
I don't know if it's that there's a bunch of random things that can cause extra noise on these cars or if engine to engine makes a difference but I've tuned very similar cars and seen one take 28-29 and one only around 26 with the same fuel in the same conditions. We tested back to back to do a fair comparison.
Yes, that's truth. More differences i see in 2015 5.0, from 22 degrees to 29.
Eastern and Central Europe American Muscle and Harley-Davidson tuning
www.hd-customs.pl
http://www.facebook.com/hdcustomspl
What kind of gains per degree of timing do you guys typically see in the 25 range on these cars? I don't have access to a dyno and have never really seen someone post this information on these engines. I've never really thought to try with VirtualDyno because I've only tuned 11-12 cars and can't get them to run on E85 so had a reason to test it.
Great info