Rupert
Senior Member
- Joined
- Feb 11, 2016
- Posts
- 285
- Reaction score
- 90
- Location
- Annapolis, Md
- Ram Year
- 2014 big horn
- Engine
- Hemi 5.7
Tuners pay for licensing software. They , as a group, are somewhat secretive about how they do what they do.
It makes sense, they invest , not only in the software, but countless hours learning their craft...hopefully without damaging any components. If tuner A told you he adjusts table XYZ by + 1.5% to get the truck to shift with the absolute minimum of TQ management, but if it goes to 2% then it can cause problems , and you take that info to Tuner "B", Tuner A just gave away a parameter that took him , say 8 hours to develop?
Have you ever seen tuning software?
I have , for my thundermax on my Harley, it uses targeted AFR with two wideband ( one per cylinder) AFR sensors and NO knock sensors. I can adjust various curves, fuel timing etc. at every RPM, by using the software. I got the bike right and I don't touch it. It has, probably 5% of the tuning capabilities as the Hemi, and what do I do? ...well when ( not very often) it pings I let off and/ or downshift.....other than that I ride it like the cops are after me. It , like both my Hemi's love the abuse.
If someone has a "race tune" from Jay or anyone else, great, but other than a few vague statements I don't think anyone really expects a complete answer. Do you?
I'm not paying my tuner to tell me what / how he did, I'm paying him to take the logs I send and my input and work their magic.
Now there has ben a few cases I'm aware of where the tuner didn't rescale the tune for new injectors, resulting in a no start and the tuner acknowledged he fixed it by rescaling...but that doesn't give away any magic.
Want a race tune? Diablo can help you with that. If your bolt on only Just add 104 unleaded 50/50 with 93 octane, make a pass, log it, check for knock. no knock ? ( shouldn't be any) add 2 points timing across all ( six) RPM parameters making sure to include the MBT parameter and make a pass, log it check for knock. make sure you turn off ESP.
If your running a cam long tunes etc, add 4 points, make a pass, log it check for knock. Or start at 2 deg and go up.
If you have any LT knock( other than some ST during a shift), subtract 1 point for every degree of LT in the parameter/ RPM range the knock occurs.
when you are satisfied of your results and have anew PB, make a copy of last tune written in your handheld, name it race tune.
Or just write down all the parameters you set and use them next time.
reflash your regular tune, after resetting all parameters, before you add fuel.
No this method probably doesn't do as much as a race tune from your tuner of choice, but its cheaper and much quicker, just pay close attention to what you are doing and write stuff down, and lastly check for ST/ LT knock , OK. ??
ST= Short Term
LT = Long Term
It makes sense, they invest , not only in the software, but countless hours learning their craft...hopefully without damaging any components. If tuner A told you he adjusts table XYZ by + 1.5% to get the truck to shift with the absolute minimum of TQ management, but if it goes to 2% then it can cause problems , and you take that info to Tuner "B", Tuner A just gave away a parameter that took him , say 8 hours to develop?
Have you ever seen tuning software?
I have , for my thundermax on my Harley, it uses targeted AFR with two wideband ( one per cylinder) AFR sensors and NO knock sensors. I can adjust various curves, fuel timing etc. at every RPM, by using the software. I got the bike right and I don't touch it. It has, probably 5% of the tuning capabilities as the Hemi, and what do I do? ...well when ( not very often) it pings I let off and/ or downshift.....other than that I ride it like the cops are after me. It , like both my Hemi's love the abuse.
If someone has a "race tune" from Jay or anyone else, great, but other than a few vague statements I don't think anyone really expects a complete answer. Do you?
I'm not paying my tuner to tell me what / how he did, I'm paying him to take the logs I send and my input and work their magic.
Now there has ben a few cases I'm aware of where the tuner didn't rescale the tune for new injectors, resulting in a no start and the tuner acknowledged he fixed it by rescaling...but that doesn't give away any magic.
Want a race tune? Diablo can help you with that. If your bolt on only Just add 104 unleaded 50/50 with 93 octane, make a pass, log it, check for knock. no knock ? ( shouldn't be any) add 2 points timing across all ( six) RPM parameters making sure to include the MBT parameter and make a pass, log it check for knock. make sure you turn off ESP.
If your running a cam long tunes etc, add 4 points, make a pass, log it check for knock. Or start at 2 deg and go up.
If you have any LT knock( other than some ST during a shift), subtract 1 point for every degree of LT in the parameter/ RPM range the knock occurs.
when you are satisfied of your results and have anew PB, make a copy of last tune written in your handheld, name it race tune.
Or just write down all the parameters you set and use them next time.
reflash your regular tune, after resetting all parameters, before you add fuel.
No this method probably doesn't do as much as a race tune from your tuner of choice, but its cheaper and much quicker, just pay close attention to what you are doing and write stuff down, and lastly check for ST/ LT knock , OK. ??
ST= Short Term
LT = Long Term
