Tuning

[VolsRam]

In that case I would ask him. I don't have the tuner yet (hopefully ordering it this week), so I'm not sure of pricings. I'm just going off what I've picked up from this forum.

 

[wickedwhite2012]

I couldnt wait so I loaded the new tune. Initially, the AF went from 10.5 to 12, so I did a little tweeking and pulled some fuel and got it to 12.6/12.7 from 2k to 6k rpms. Sweet.

Here is a link to my data log.

https://www.dropbox.com/s/9l70669pnpd9dbx/Best Tune Data Log.log

Looking at the data log you need your MPH added. But from looking at it you have a 5 degree of knock. I have got mine down to a 1 degree of knock and that is in between shifts. All i can say is it is a ROCKET out the gate now.

 

[Jerseymike]

Looking at the data log you need your MPH added. But from looking at it you have a 5 degree of knock. I have got mine down to a 1 degree of knock and that is in between shifts. All i can say is it is a ROCKET out the gate now.

I dont think its real knock. Might be the dipstick hitting the headers. The mechanic had to bend to dipstick to install the headers and it is really close.

I did a little more tweeking and added 2 degrees of timimg from 1000 to 3800 rps. Also, added a little fuel in all rpms. The knock is down to 2 now. It pulls real strong. Will smoke both wheels to 60 mph.

Where is the MPH PID???? I searched a few times and cant find it???

Here is latest run: https://www.dropbox.com/s/5lb6iogtolzthrz/last tune 3 18.log

I added a little more fuel after this but cant run till it stops raining. Where is MPH PID??

 

[Hemi_Express2013]

MPH is under performance. I log the knock sensor with the computer. The pids are a little different, it gives the Volts during a run on both sides. it will help isolate which side. Keep us up to date with your process. It's good info. I'll log some of mine for you as well.

 

[wickedwhite2012]

If you dont know know anything thing on timing and fuel. The best think to do is leave it alone. You will tear the motor if the timing is not right.

 

[Hemi_Express2013]

Jerseymike, this KR that we have in our engine is a plague. It is well know by tuners for the last couple of years. Most tuners agree it's a tune related problem, False knock @3500rpms and greater with the 6 speed, but no one has figured it out yet, that I've heard of.

Your STR is between .5 and 3.0, with an occasional 4.5. I think you would become worried if your knock increases over the rpm range 9.0-15 with a LT of any value might mean something real. Sharp jumps with the proper decay rate(0.8 degrees per second) is false KR.

Go with the obvious first, if it's not the gas, Your headers are right on top of the knock sensors, oil dipstick tube, mid pipes loose at the header collector, heat shield, etc. or just the Hemi tune plague.

You can have your knock sensors desensitized.

When you return to stock, do you still have that KR? How many of us have data logged it? I know I have. It'll drive you to become a tuner.

2* at a time is good. With as much data logging as we do, you'll notice real knock when it get's there.

 

[TylerB]

Jerseymike, this KR that we have in our engine is a plague. It is well know by tuners for the last couple of years. Most tuners agree it's a tune related problem, False knock @3500rpms and greater with the 6 speed, but no one has figured it out yet, that I've heard of.

Your STR is between .5 and 3.0, with an occasional 4.5. I think you would become worried if your knock increases over the rpm range 9.0-15 with a LT of any value might mean something real. Sharp jumps with the proper decay rate(0.8 degrees per second) is false KR.

Go with the obvious first, if it's not the gas, Your headers are right on top of the knock sensors, oil dipstick tube, mid pipes loose at the header collector, heat shield, etc. or just the Hemi tune plague.

You can have your knock sensors desensitized.

When you return to stock, do you still have that KR? How many of us have data logged it? I know I have. It'll drive you to become a tuner.

2* at a time is good. With as much data logging as we do, you'll notice real knock when it get's there.

Exactly.

 

[VolsRam]

I have a feeling that I'll be asking A LOT of questions on here the next couple of weeks. The tuner should be here tomorrow, and I've already received my email from Sean about steps to take. I'm completely new to this, so I'm still trying to figure out what yall are talking about haha.

 

[Jerseymike]

Jerseymike, this KR that we have in our engine is a plague. It is well know by tuners for the last couple of years. Most tuners agree it's a tune related problem, False knock @3500rpms and greater with the 6 speed, but no one has figured it out yet, that I've heard of.

Your STR is between .5 and 3.0, with an occasional 4.5. I think you would become worried if your knock increases over the rpm range 9.0-15 with a LT of any value might mean something real. Sharp jumps with the proper decay rate(0.8 degrees per second) is false KR.

Go with the obvious first, if it's not the gas, Your headers are right on top of the knock sensors, oil dipstick tube, mid pipes loose at the header collector, heat shield, etc. or just the Hemi tune plague.

You can have your knock sensors desensitized.

When you return to stock, do you still have that KR? How many of us have data logged it? I know I have. It'll drive you to become a tuner.

2* at a time is good. With as much data logging as we do, you'll notice real knock when it get's there.

Cool. Thanks. Yeah Im not concerned about it. Sean saw the data log and said it was normal. I tried adding fuel, removing fuel, adding timing, removing timing and all configurations still get from 1 to 5 STR no LTR. I had to get 91 octane the other day so Im gonna wait till I get 93 back in there to do some more runs. At least I have the AF dialed in now at 12.6.

And thanks I found the Speed PID!!

 

[Jerseymike]

I have a feeling that I'll be asking A LOT of questions on here the next couple of weeks. The tuner should be here tomorrow, and I've already received my email from Sean about steps to take. I'm completely new to this, so I'm still trying to figure out what yall are talking about haha.

Here read this a few times. Its for the Predator but close enough.

http://www.ramforum.com/f8/diablosport_predator_knowledge_base-15334/

 

[VolsRam]

Here read this a few times. Its for the Predator but close enough.

http://www.ramforum.com/f8/diablosport_predator_knowledge_base-15334/

Dang!! I can tell I will be spending quite some time reading that thread haha.

 

[Jerseymike]

Its really more than you need to know but Im never satisfied until I know exactly whats going on. I spent lots of hours trying to tweek the HF tune and i really didnt change much. Sean looked at 1 data log and got it 99.99% there, I have done 40 more logs in 40+ hours to pull 2% fuel and add 2 degrees timing and Im not sure its any faster. My stupid OCD.

The best thing I did was to raise the part throttle shift points. The truck would shift to early and bog down so I raised all the part throttle shifts by 300 rpms. Also turned off MDS.