Cobb AccessPORT 1/4 mile results and review

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Mar 9, 2009 | 02:47 PM

#16

DRAG

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From: Indianapolis, IN

I just went back to look at my logs, and I was logging EVERYTHING. I have 1200 and 1400 rpm between some data points. So I went back and looked at some other logs on the street and on a 3rd gear pull logging 12 fields, the logging was much better with less than 200 rpm between data points. However, I looked at a 1/4 mile log monitoring 10 fields and it was really random. Some points have 2 rpm between them, others have 200, most have 1000-1200. I never thought about logging all those fields causing a problem...I did it out of habit because that is what I have always done on my standalone ECUs on my race car.

Thanks for looking into this Cobb.

Last edited by DRAG; Mar 9, 2009 at 02:52 PM.

Mar 9, 2009 | 02:48 PM

#17

DRAG

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From: Indianapolis, IN

Quote:

Originally Posted by COBB Tuning

We still support the EVO 8, 9, and 10. Hertz is simply a measurement of frequency, or cycles, per second. A datalog that captures 4 distinct values per second would be considered 4 Hz, a log that captures 10 distinct values per second would be considered 10 Hz. If you have a sample log, and some specific information about what is expected then we can look into making improvements. Thank you for helping us address your concerns.

The logging rate of the AccessPORT and the AccessTUNER Professional software are two different possibilities, please let me know what was used to capture the log you e-mail me.

Thanks,
Christian.

If I log within Access Tuner Race instead of with the AP, will that make a difference? Thanks for the help.

Mar 9, 2009 | 02:55 PM

#18

DRAG

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From: Indianapolis, IN

Quote:

Originally Posted by LVSBB6

Great writeup! Just to confirm your car currently have full turbo-back as the only modifications right? Do you have a boost gauage and A/F meter and the related data for running the Cobb Stage 2 maps?

Turbo-back, but stock o2 housing, HKS drop-in. I have no boost gauge, no wideband, and did not remove the boost pill. I only ran the Cobb Stage 2 on the last pass. I am running the Perrin map daily.

Mar 9, 2009 | 03:26 PM

#19

ZWingerRyRy

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From: Minnesota

Quote:

Originally Posted by DRAG

I haven't been on the dyno yet. I see that you quickly went from your AP to ecuflash. If you don't mind me asking, what was the reasoning for that? The ATR software is just as capable, but the datalogging is what is killing me

Well i had Ap Stage 3 Perrin, but my tuner didnt like the ATR software to much and dataloggin was crappy. He said if cobb would give out some trial keys to try it out he would like to see its capabilities. Cant justify the price for the key if cobb doesnt provide some kind of test key to see how the full version works out as he rather tune via AP as he was a Subaru AP Tuner and it has it benefits with features. So i just went with Ecuflash til Cobb gives him a break and lets him try it out. Atm its just being used as my Engine Code Checker and Clearer

Mar 10, 2009 | 08:32 AM

#20

Rob@cobbtuning

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From: SLC, UT

Quote:

Originally Posted by DRAG

If I log within Access Tuner Race instead of with the AP, will that make a difference? Thanks for the help.

The AT Race will have better throughput than the AP. Try selecting only the parameters you are interested in. For instance, ECT may not be something you care about logging during every pass, but may be something you monitor between passes. If you are not tuning drop the load timing and fuel monitors.

One thing you might want to check is how well the dongle is seated on the OBDII connector. Running the 1420 can be a bit violent slightly dislodging the dongle. Just an idea.

Feel free to ping me with anything you have questions about or would like to see. Customer input helps make our products better.

Rob

Last edited by Rob@cobbtuning; Mar 10, 2009 at 08:36 AM.

Mar 10, 2009 | 10:50 AM

#21

MKULTRA

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From: Japan

nice writeup

Mar 10, 2009 | 03:31 PM

#22

Locked

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Quote:

Originally Posted by Rob@cobbtuning

Can I ask how many parameters you are attempting to log? Logging 12-13 parameters between the dashboard and logging nets a 5-8Hz sample rate. If you are trying to log every parameter available, the bandwidth will be more than taken up.

How many parameters was your friend logging? Which parameters was he logging? I'm trying to get a feel for what is actually being used.

Thanks,

I'm the friend...

I was logging the following using evoscan at 10HZ.. I have a data point at roughly every 60-80 rpm once into the pass.

TPS
RPM
Battery
CoolantTemp
AirTemp
TimingAdv
Baro
Speed
InjPulseWidth
InjDutyCycle
WideBandAF
KnockSum
AFRMAP
LoadCalc

Mar 11, 2009 | 09:55 AM

#23

Rob@cobbtuning

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From: SLC, UT

Quote:

Originally Posted by Locked

10Hz with those parameters should definitely be doable with the way Mitsu packages their standard monitors.

Thanks,

Jun 9, 2009 | 12:14 PM

#24

Jblade

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Quote:

Originally Posted by Rob@cobbtuning

10Hz with those parameters should definitely be doable with the way Mitsu packages their standard monitors.

Thanks,

so have their been any improvements to the AP logging (outside of the "user error" of logging everything)?

And what's the bandwith difference between using just the AP versus logging with ATR (meaning, do the number of datapoints logged through ATR compare with the numbers Mitsulogger and EvoScan have)?