Helllcat KR

[uglyman8]

Morning gents,

So, we just added the 2.72, iD1300x2, offroad mids,Brisk x2 colder plugs. Before the mods, 655 rwhp, 0 KR. After dropped into the 500's and 10+ KR at WOT. Checked everything, added the E85 and and attempted again, same issue. She pulls mad timing @WOT. My tuner is inhouse and fairly new to the Dodge world. I think its too rich....Miracle_2.72_E85_stk.hpl

[J2Motorsports]

Said new tuner here . Car is at 11.2-11.5 on 93 with 13 deg timing still pulling 10 deg. That isn't rich from all ive learned. The car also has misfire counts at idle in certain cylinders, not all. The 11.2-11.5 was also from an ntk wideband not the screen in the vehicle.

[spoolboy]

Take out timing and see if the knock is still there is you haven?t tried that. Could be false knock, but also could be real.

[uglyman8]

Update. Put her on the lift, found the front mid body brace was rubbing the exhaust, put more spacers on it. Gonna try again.

So what AFR are we looking for on HC's? I am seeing differing information. 13.65 being stoich tells me they like to be leaner than other motors. Top hemi tuners saying 12.0-12.5 is good at WOT....I am also seeing that many are facing these KRs. Even with desc. knock sensors....what am I missing? Rock it on 16* and 12.3 AFR and take 50% out of the knock sensors? The last build the tuner wanted the it to be 12.0 AFR. 0 KR. That was a more indepth build, cam, LTs, 2.72, etc....

[uglyman8]

New to Dodge.....from the dark side...of LS....haha!

[JoshCP527]

Well all i can say is log the factory widebands and read eq command and the widebands in lambda. Throw out the dash gauge its offset to the stoich fa setting and means dick.