The self-tuning thread
- Thread starter 4DRHTRD
- Start date
Seems well put.The knock retard I'm seeing is about the same as the stock tune and starts dropping right after it starts. The final spark advance is lower because the airload is higher and goes to the next row on the BKT and MBT tables. The reason I asked to look at your BKT and MBT is because none of the factory EcoBoost engines (Focus RS, Mustang, F-150) are running timing that high in the high load/high RPM ranges.
I did some more datalogging, and the amount of timing it is pulling here (same test scenario) would be easily taken care of with 93 octane fuel. I'm starting to think it might be ghost knock as the vehicle speed increases. Something must be fluttering/vibrating at a similar frequency because the KR trend isn't increasing.
I punched the throttle to pass and it only pulled a few degrees, and this is at a slower vehicle speed. Total spark advance, even w/o knock retard, is fairly low at these airload and RPM cells. Looking at the stock BKT/MBT tables for the Focus RS/Mustang/F-150, it's not surprising.
Once I finish this tank of 87, I'll switch to 93 and do more testing.
I punched the throttle to pass and it only pulled a few degrees, and this is at a slower vehicle speed. Total spark advance, even w/o knock retard, is fairly low at these airload and RPM cells. Looking at the stock BKT/MBT tables for the Focus RS/Mustang/F-150, it's not surprising.
Once I finish this tank of 87, I'll switch to 93 and do more testing.
I would not recommend comparing our motors timing needs to ANY other car. I guarantee you that we don't have the same camshaft profile of any of these other cars. Every motor has unique timing needs. Very slight changes in cam profile can equate to large differences in base timing and curves.
Metro, I'm not sure what to tell you.
You are trying to make a performance tune based upon the OEM tune which has to account for factors like huge variations in fuel quality, emissions, etc. I don't know why the stock tune has so much knock retard but that doesn't mean it is safe for a vehicle pushed beyond stock parameters. I do know that they have the financial and engineering resources to try every possible safe combination one could dream of and I'm sure good reasons for the way they tune the ECO. Once you go beyond those limits how they program and all the different reasons do not and probably should not apply.
No tuner is going to help you when you run crap fluids in your vehicle, why would they risk their reputation in a vehicle that you haven't taken basic preventative measures to provide a healthy environment for increased power? The worry there is they provide help and you grenade your motor because of crap fuel and/or oil but them and their reputation get thrown under the bus. I'm not saying you would do that but there are plenty of disingenuous people on this planet that would. How is one to truly know your character from a forum?
You are trying to make a performance tune based upon the OEM tune which has to account for factors like huge variations in fuel quality, emissions, etc. I don't know why the stock tune has so much knock retard but that doesn't mean it is safe for a vehicle pushed beyond stock parameters. I do know that they have the financial and engineering resources to try every possible safe combination one could dream of and I'm sure good reasons for the way they tune the ECO. Once you go beyond those limits how they program and all the different reasons do not and probably should not apply.
No tuner is going to help you when you run crap fluids in your vehicle, why would they risk their reputation in a vehicle that you haven't taken basic preventative measures to provide a healthy environment for increased power? The worry there is they provide help and you grenade your motor because of crap fuel and/or oil but them and their reputation get thrown under the bus. I'm not saying you would do that but there are plenty of disingenuous people on this planet that would. How is one to truly know your character from a forum?
sholxgt said:
Well that came to mind especially with the F-150's 3.5 EB, but the Focus RS, Mustang, and F-150 (2.7 and 3.5 EB) are all running practically retarded (negative timing) BKT cells at high airload/high RPMs and they all don't have similar cam profiles. The SHO is the only EcoBoost I've found that runs advanced timing in those same cells.
metroplex said:
That is enough right there to tell you that we have different timing needs. Guarantee that our cams are just very different. I would only look at transverse 3.5 data. Even then I would mostly look at SHO/MKS as we don't know that the Explorer or Flex don't have different cams to aid in towing needs.
FiveLeeter918
New member
Sorry to bring the post back from the dead, but a friend and I are tuning my SHO using his PRP and we've done well with it, car is adding timing through the KS and fueling is on point. But we can't get past the closing tb and dropping boost in higher rpm.
Any help?
Any help?
FoMoCoSHO said:
I talked to another SHO owner from work, he has a 2010. He's replaced both turbos, the first at 37k miles, and the other at around 80k? miles. He's completely stock and never raced it. The way I see it, the stock turbos are consumables.
Fiveleeter: I have SCT PRP but never used it for my SHO. I use HPTuners for the SHO. It sounds like if the TB is closing and dropping boost at high RPM that there's a torque limiter somewhere that needs to be raised. I wrote a guide specifically for 2013-up SHO's but it's based on HPTuners software.
FiveLeeter918
New member
would you be able to share it? Could be worth the read, even with different software.