Question: Driving technique in order to log appropriate data?
Question: Driving technique in order to log appropriate data?
I'm working on a How-to so that newbs like me can log appropriate data for tuners to properly adjust base flashes but I do not know the proper way of driving in order to log that particular data they need. My questions are:
1. Do I need to take the car up to it's maximum top speed?
2. Do I need to go WOT in all the gears and try to maintain max rpm for a certain amount of time before letting up?
3. Or do I simply need to go WOT in short bursts?
4. How long should I log data for?
If a tuner can chime in and let me know what they would need to do as if they were sitting at the wheel of the car for tuning I can then create a good how-to for using mitsulogger to capture data for tuners. It amazes me when tuners simply tell you to log your car but they don't tell you what parameters they are looking for or how to go about doing it step by step. I've been having to piece together instructions on how to log the ecu from reading several threads. Now all I need is instructions on how to drive to get the correct data they are looking for. Thanks in advance.
1. Do I need to take the car up to it's maximum top speed?
2. Do I need to go WOT in all the gears and try to maintain max rpm for a certain amount of time before letting up?
3. Or do I simply need to go WOT in short bursts?
4. How long should I log data for?
If a tuner can chime in and let me know what they would need to do as if they were sitting at the wheel of the car for tuning I can then create a good how-to for using mitsulogger to capture data for tuners. It amazes me when tuners simply tell you to log your car but they don't tell you what parameters they are looking for or how to go about doing it step by step. I've been having to piece together instructions on how to log the ecu from reading several threads. Now all I need is instructions on how to drive to get the correct data they are looking for. Thanks in advance.
It really matters how you drive your car and what you want your car tuned for.
For example, pulls on the street here and there is different from drag racing. And drag racing is different from autocross, etc.
One tune may need to be more or less aggressive than the next, if you want to tune for maximum power and no knock.
Basically, what I am saying is that you should log the car under the toughest conditions that you will be running the car. If you only do third gear pulls on the highway, then send third gear pulls to your tuner. If you drag race, then try to get a 1-4 gear pull to the tuner.
In general though, to be conservative, try to get a multi-gear or higher gear pull all the way to redline, since knock will tend to show up the longer you stay in boost or higher loads.
Eric
For example, pulls on the street here and there is different from drag racing. And drag racing is different from autocross, etc.
One tune may need to be more or less aggressive than the next, if you want to tune for maximum power and no knock.
Basically, what I am saying is that you should log the car under the toughest conditions that you will be running the car. If you only do third gear pulls on the highway, then send third gear pulls to your tuner. If you drag race, then try to get a 1-4 gear pull to the tuner.
In general though, to be conservative, try to get a multi-gear or higher gear pull all the way to redline, since knock will tend to show up the longer you stay in boost or higher loads.
Eric
It's ultimately up to your tuner. Some tuners may, from experience, have their own 'correction factors' for different types of tunes. Maybe he/she can use your third gear pull and adjust for drag racing, autocross, road racing, etc.
But, doing it this way will depend heavily on certain mods, like what IC you have, etc. Road racing, in my opinion, will be the hardest to tune for without an actual log from a road racing session. Road racing is usually high loads/boost for extended periods of time, so it should be the most conservative tune. You'll never get a way with a drag racing tune for maximum power for road racing, for example.
Again, this is really up to your tuner and you and how conservative a tune you want. Ideally, you should log the car under the toughest conditions that it will be used for. It that isn't possible, then let the tuner know exactly what you will be using the car for, so that he/she can adjust accordingly.
Eric
But, doing it this way will depend heavily on certain mods, like what IC you have, etc. Road racing, in my opinion, will be the hardest to tune for without an actual log from a road racing session. Road racing is usually high loads/boost for extended periods of time, so it should be the most conservative tune. You'll never get a way with a drag racing tune for maximum power for road racing, for example.
Again, this is really up to your tuner and you and how conservative a tune you want. Ideally, you should log the car under the toughest conditions that it will be used for. It that isn't possible, then let the tuner know exactly what you will be using the car for, so that he/she can adjust accordingly.
Eric
Also, you need to tune for changing throttle inputs and loads, as a stable consistent pull may not show knock, but altering throttle inputs as you would on a road course could lead to knock as transitions in different loads change.
when I do a log on my car I do it on a slight incline, (like a mountain pass road)
gives me the most intense physical load on the motor for the longest time. usually carry my tools in the trunk too.
It takes longer to get to critical speeds so your log will be fuller. a third gear, fourth and a fifth from fairly low down.
that's what i do on my ems for tuning but a log for a flash should be the same. I figure you tune for worst case scenario and that will cover you on a road course.
If you have the time why not give your tuner a few in between pulls too. more information is easy to throw out but not enough is tough to find.
will be giving up my hydra soon, been a ball tuning modding and tuning, but the obd2 threat looms next winter when I have to renew my plates. so its the ecuflash newbie threads for me soon. I must say reading the problems people have getting wired up makes it a large step into the unknown.
gives me the most intense physical load on the motor for the longest time. usually carry my tools in the trunk too.
It takes longer to get to critical speeds so your log will be fuller. a third gear, fourth and a fifth from fairly low down.
that's what i do on my ems for tuning but a log for a flash should be the same. I figure you tune for worst case scenario and that will cover you on a road course.
If you have the time why not give your tuner a few in between pulls too. more information is easy to throw out but not enough is tough to find.
will be giving up my hydra soon, been a ball tuning modding and tuning, but the obd2 threat looms next winter when I have to renew my plates. so its the ecuflash newbie threads for me soon. I must say reading the problems people have getting wired up makes it a large step into the unknown.
