- #Use cobb accessport data logs with racerender how to
- #Use cobb accessport data logs with racerender full
There are several potential culprits in this situation. Positive corrections beyond 10% mean the ECU is adding lots of fuel. Other potential issues could be a bad MAF sensor, failing o2 sensor, or you may have a map flashed that is not designed for your intake or injectors. This would most likely be due to a leak in the intake tract. Negative corrections beyond 10% mean the ECU is pulling lots of fuel. The closer to zero the better, but generally, the acceptable range would be +/- 10%. Negative numbers indicate that fuel is being removed. Positive numbers indicate that fuel is being added. This monitor shows a percentage correction for fueling. Let’s take a look at each of these monitors individually in more detail. There are some differences in newer model year (2015+) WRXs, but for EJ equipped Subarus, these monitors include: A/F Learning 1, Boost, DAM, Fine Knock Learning, and Feedback Knock. There are some key monitors within the default list that can help gauge whether there are any issues present.
#Use cobb accessport data logs with racerender how to
If you’re unsure of how to gather the data from your vehicle, check out COBB U Episode 17 covering how to data log.Īfter you’ve recorded your data log, it will be time to examine the results. Below are some of the key monitors that can help determine you engine’s overall health. Luckily, an in depth knowledge isn’t required for a basic wellness check. That’s quite a few! Having an in-depth knowledge of how your engine works, and the affects added modifications have, allows troubleshooting of more complex issues.
#Use cobb accessport data logs with racerender full
Here is a link to the Full Monitor List which defines each monitor. This list of parameters will help troubleshoot the most common issues of the specific vehicle with which the Accessport is used. The following is a general guide covering some key parameters on your COBB supported Subaru.Įvery Accessport is automatically setup with a default log list. At first glance, the amount of monitors and the sheer volume of data can be a bit overwhelming. Completing a data log and reviewing the results can help troubleshoot or identify any issues that may be present. This is especially important anytime tuning changes or hard part modifications are made to your vehicle. It’s never a bad idea to examine what’s going on behind the scenes to determine how well your car is running. You'll only see that 15.2 psi peak for a narrow RPM range around 3.5k RPM in higher gears.įor the KC parameters, you want your IAM to be 1.0, and your feedback and learned KC to stay 0.By Kyle on Subaru – Data Logging Overview At peak power I was running more like 15, and at peak power you're probably running more like 10. So I could say I was running 21 psi, but that's only for about 500 RPM before it started to taper back off. I think my VF39 could only hold around 14 psi at redline, despite peaking at 21-22 in the midrange. That's just the peak, these turbos crap out at high RPM. Be wary of reading posts on this forum of people with TD04s or VF39s claiming 18, 20, 22 psi targets. Your target boost at redline is probably only 8-9 psi. You need to log target boost, the 15.2 psi target is only the peak, it tapers off very quickly since the TD04 can't handle that past around 3.5-4k RPM. Also for target boost i am using COBB stage II 91 octane map with a target of 15.2 psi is this what you are talking about? I'm not sure what i should be looking for with the knock control parameters. If you did a log in a higher gear, 3rd or 4th, starting out at 2-3k RPM, you should see peak boost and you should see it taper off starting around 3.5-4k to redline.įorgive me but i am a total newb at this stuff and i have been trying to read as much as i can but i was hoping to be pointed in the right direction as for the best thread to get info about this stuff. In your log you did a full pull in 1st gear (can't hit peak boost), and from then on all of your gears were 4.3k to redline, which is too high to hit peak boost with that turbo. In the higher gears you can, but only from about 3-3.5k RPM. The load on the car in 1st gear is also not high enough to bring you to peak boost until at least 5-6k RPM, by which time the turbo can't hit peak boost anyway.īottom line, is in 1st gear you will never hit peak boost on the TD04, the RPM rises and the turbo tapers off too quickly. By 4k RPM, you will not hit peak boost, the turbo is already tapering down. The TD04 hits peak boost early and then starts tapering off almost immediately. are you saying i should log from mid RPM range in third gear to WOT and see what i am getting? i guess i am not understanding how starting the log in 3rd gear would give me a different boost. I started this log below 2000 rpm and ran WOT from 1st through to 4th gear so i was assuming i would be getting full boost.
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