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Discussion Starter · #1 ·
I have a 2017 wrx. I have very little knowledge when it comes to e-tuning an engine and I have Two quick questions:
1. I found on internet that some of the things that may be modified during an tuning are: boost pressure, ignition timing, raising the speed, and rev and torque limiters. Are those correct, Is something else that gets modified, or something is NOT change in a wrx?
2. Since I have a limited knowledge I will heavily trust whatever the e-tuner says looks right; however, I would like to know what I should look for in the data log (Cobb access port) to know that a good job has been done and nothing is wrong with the engine. The goal is to conservatively increase engine power.
 

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Watch your Boost, Feedback Knock, Fine Knock Learn, and DAM, essentially. There are plenty of other factors.

If you're dead set on Etuning, Contact Eric @ Torqued Performance, Bren Tuning, or if you want the best of the best, JR from JR Tuned also does E-Tunes.
 

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Discussion Starter · #3 ·
What should I be looking for in the boost? What is the max boost the car can reach safely (conservatively)? Should I look for sudden boost drops? How about the feedback knock, fine knock and DAM, what should I be looking on those? All I want is to learn some basics so I will know if the etuner is doing something crazy and make me believe is OK. Also, would it make a difference to do the etuner now in the winter vs in the spring or summer? Finally, once the tunning is done if I am going to higher elevation, should I worry about something? Should I get it back to the original map if I will spend a significant time at a higher elevation since the atmospheric pressure changes? Thanks so much for the help.
 

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hmartine said:
What should I be looking for in the boost?
The calibrator can tell you what you should be looking for with boost.

hmartine said:
What is the max boost the car can reach safely (conservatively)? Should I look for sudden boost drops?
There is no one answer to that question. As a calibrator, you're making adjustments to boost, ignition, fuel, and cam timing to make power. What's "safe" for one car is not "safe" for another when only looking at boost alone.

hmartine said:
How about the feedback knock, fine knock and DAM, what should I be looking on those?
In an ideal world, you never see a value different than 0 for either knock parameter, and 1 for DAM. That said, you have an active knock control system, so you will get some knock here and there. You basically don't want repeatable knock in a particular RPM/Load, as that's typically a sign that you're running too much advance in that cell. You never want DAM to go below 1, because that means you're pulling timing globally.

hmartine said:
Also, would it make a difference to do the etuner now in the winter vs in the spring or summer? Finally, once the tunning is done if I am going to higher elevation, should I worry about something? Should I get it back to the original map if I will spend a significant time at a higher elevation since the atmospheric pressure changes? Thanks so much for the help.
That's what the compensation tables are for. A good calibrator will have a general idea what values should be there. You might need a touch-up as the seasons change (every car is different), but you'd only know that with datalogging.
 
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