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Cobb AccessPORT Discussion

Old May 21, 2008 | 12:47 PM
  #2701  
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^^^ oh SNAP! i wasnt aware they were that easily found, not that i looked.... i just assumed these things were ninja and hard to find


EDIT: had to go and buy this one. for 10 bucks i'd like to be able to keep my scangauge plugged in and still use the AP for a while to monitor AFR with new maps

just went and bout a panavise mount and a clip as well.... its gotta look purdy

Last edited by paulmasoner; May 21, 2008 at 01:32 PM.
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Old May 21, 2008 | 02:13 PM
  #2702  
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Are you sure that you can just use two devices via a splitter like that? It's not like you're splitting audio signal. There are communications involved and what not. What if both devices send a signal down the wire a the same time? My hunch is that it won't work.
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Old May 21, 2008 | 04:02 PM
  #2703  
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Originally Posted by Astral
Are you sure that you can just use two devices via a splitter like that? It's not like you're splitting audio signal. There are communications involved and what not. What if both devices send a signal down the wire a the same time? My hunch is that it won't work.
i think the same, because i recall hymme making mention of that, i dont know what was said, but it gave me the thought of IRQ...

but for $10 i'll find out.
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Old May 21, 2008 | 05:24 PM
  #2704  
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I wouldn't plug in 2 devices for love nor money.....

Sounds like you'd be asking for a non-functional PCM...........
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Old May 21, 2008 | 06:03 PM
  #2705  
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Originally Posted by paulmasoner
i think the same, because i recall hymme making mention of that, i dont know what was said, but it gave me the thought of IRQ...

but for $10 i'll find out.
You could probably have them both plugged in just to avoid disconnecting and reconnecting all the time, but only turn on 1 at a time. Just leave the cord hanging next to the AP when you aren't using it, I just wrapped my cord around the cell phone holder and the usb hangs right under the AP when I'm not using it.

Last edited by Rocketman1976; May 21, 2008 at 07:37 PM.
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Old May 21, 2008 | 08:45 PM
  #2706  
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i asked a very smart fellow who has helped me out before about this subject. awaiting his thoughts.

in the mean time i am curious to hear what thinking/history is behind the idea that running the AP live data and the scangauge2 simultaneously will be bad or kill the PCM. does it have something to do with an interupt request protocol?

i have seen this mentioned and i THINK answered in another thread before but i cannot find it now i have no ninja searching skillz
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Old May 21, 2008 | 08:52 PM
  #2707  
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FOUND IT!!

Originally Posted by Hymee
Yeah - it's easy to have a "splitter", in fact I have my own and often have had 3 different devices connect to the bus at the same time. There is no concept of interupt, unless you speak of coitus interuptus. It is a message bus where any nodes on the network can read packets of information, and put packets of information on the bus.

Cheers,
Hymee.


from this page:

https://www.rx8club.com/showthread.p...er#post2386869

p.s. thanks hymee! if your reading this page still, you can disregard the PM unless i am missing the facts

OH and MM, just in case i am wrong and i dont get the questions cleared up in time... can you reassure me on how well the PCM recovery works on the AP. i'd hate to brick it

Last edited by paulmasoner; May 21, 2008 at 08:57 PM.
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Old May 21, 2008 | 09:50 PM
  #2708  
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Mines out of my car right now getting "de-bricked"...so I would still tread carefully

You should be OK with devices that just read the bus.....but the programming side of things...I wouldn't want one of those hooked up with anything else
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Old May 21, 2008 | 10:09 PM
  #2709  
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Need some advice, while datalogging to define base line prior to up loading MM's maps I have found that under WOT in first gear AFR is mid to high 14's until I hit +4300 rpm, then drops to 10 ish. Every other gear AFR is low 10's at WOT.

Level 2 MM map has increased AFR's to low 11's but I still see mid 14 AFR's in first gear upto 4300 rpm. Before I go to a more agressive map, are others seeing high AFRs in first gear at WOT until 4300rpm? Is this normal ? This was happening with the OEM map. Datalog file attached.

I am also seeing that TPS is maxing at 79% although pedal is hard down, I assume this is just a scaling issue and has no impact on engine management ??

Your comments welcome..

Cheers
Attached Thumbnails Cobb AccessPORT Discussion-datalog.jpg  
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Old May 22, 2008 | 12:19 AM
  #2710  
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Woo Hoo!

Mine arrived today! This weekend time to reprogram.

Thanks Jeff!
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Old May 22, 2008 | 01:17 AM
  #2711  
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Originally Posted by Rx8.Rated
Before I go to a more agressive map, are others seeing high AFRs in first gear at WOT until 4300rpm?
More aggressive map? Where are you going to get that from?

I suspect someone didn't read the instructions.

The 11 calibrations I sent you are not "levels". Think of them as notches in a belt.
You only get one belt, but you need to adjust it to fit.

Originally Posted by paulmasoner
can you reassure me on how well the PCM recovery works on the AP. i'd hate to brick it
I bricked mine intentionally a few times just to test the recovery mode.
It works.
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Old May 22, 2008 | 01:21 AM
  #2712  
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The only problem with having multiple devices on the CAN bus would be if one of them is re-programming, and the other is trying to talk the PCM.

Other than that, I have had multiple devices connected at the same time, whilst programming - i.e. logging the CAN bus traffic with one devices (of my own programming session) using another device to do the re-programming.

Cheers,
Hymee.
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Old May 22, 2008 | 01:25 AM
  #2713  
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Originally Posted by Razz1
Now if we can get Cobb to do one for the G8 GT.....
No need. LS1 Edit / LS2 / HP Tuners software already allows it and is well established.

Cheers,
Hymee.
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Old May 22, 2008 | 01:39 AM
  #2714  
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One "warning" -
On the Grand Am cars, I've had to pull the AiM-MXL from the CAN bus to use the AccessPORT because it interfered.
I suppose, a device that is making a lot of calls might impede another device.
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Old May 22, 2008 | 03:38 AM
  #2715  
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Originally Posted by MazdaManiac

I bricked mine intentionally a few times just to test the recovery mode.
It works.
good to hear again

Originally Posted by Hymee
The only problem with having multiple devices on the CAN bus would be if one of them is re-programming, and the other is trying to talk the PCM.

Other than that, I have had multiple devices connected at the same time, whilst programming - i.e. logging the CAN bus traffic with one devices (of my own programming session) using another device to do the re-programming.

Cheers,
Hymee.
Originally Posted by MazdaManiac
One "warning" -
On the Grand Am cars, I've had to pull the AiM-MXL from the CAN bus to use the AccessPORT because it interfered.
I suppose, a device that is making a lot of calls might impede another device.
thanks guys, appreciate the input! in a week or so when the parts come in i'll snap a pic and report results. note that i WILL disconnect the scangauge2 any time i am flashing the PCM
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Old May 22, 2008 | 06:25 AM
  #2716  
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I think it would be very wise to disconnect any "active" device such as a scan tool whilst the PCM flashing process is in place. I guess my original point was that CAN is a multi-device messaging bus, but yes - caution is required.

Cheers,
Hymee.
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Old May 22, 2008 | 08:26 AM
  #2717  
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Can I use the AP dongle to charge my cellphone by USB? :D
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Old May 22, 2008 | 01:00 PM
  #2718  
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Originally Posted by qtwre
Can I use the AP dongle to charge my cellphone by USB? :D
i was recently doing a lot of reading on a couple of SAE publications(until i lost most interest) and honestly i cant remember. but basic electronics tells me that with the right connector and possible tranformer then sure.

but i found out when i was a kid that its also possible to power an amp/sub box off the wall outlet in your house. a monstrous assortment of availible transformers and hacked up RCA cables(from a nintendo circa 1980s) later, it worked and was tied into my computer speakers.

i guess the answer comes down to: finding something thats been produced for you, or making it yourself.

but then, why the hell am i making this long *** post when this is such a silly idea, just plug your phone into the ACC ports in the car!


EDIT: i just realized i didnt even address the question asked.... what an idiot
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Old May 22, 2008 | 07:01 PM
  #2719  
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I spoke to a friend of mine who used to have a Subaru WRX STI and a Cobb bout my extremely high AFR's in the high RPM's with the Cobb Stage I tune and he informed me to just use it a few times and watch the Knock retard, as long as it doen't have to retard at any time the Cobb tune is fine and will yield the highest HP in the high RPM's.

So I am now feeling pretty comfortable in using the Cobb tune now.

Someday, when Scott is more comfortable with doing a Dyno tune with the Cobb on my car, or if Jeff is ever in this area I will go ahead and pay for a custom tune to to be sure I get the most out of my Cobb.

For a recap I get 14.5-15.2 from 7500-9300 rpms with no knock retard or detonation. The car feels a lot stronger and my 1/8 mile mph has gone up 4 mph with the addition of The mazsport ignition, Cobb Stage I tune, and the subtraction of a catless mid-pipe.
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Old May 22, 2008 | 07:06 PM
  #2720  
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Originally Posted by Rocketman1976
I spoke to a friend of mine who used to have a Subaru WRX STI and a Cobb bout my extremely high AFR's in the high RPM's with the Cobb Stage I tune and he informed me to just use it a few times and watch the Knock retard, as long as it doen't have to retard at any time the Cobb tune is fine and will yield the highest HP in the high RPM's.
Unfortunately, that doesn't apply.

Why are you still running the Cobb tune?
How many more calibrations do I need 2 send you before you install one?
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Old May 22, 2008 | 07:36 PM
  #2721  
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I have only received a base calibration for setting the STFT.

Do you think the lean tune I am using is unsafe?

Would a tune with a 12.5 to 13.5 high rpm AFR make less or more HP than a 15? If motor safety is not an issue and the high AFR makes more power then I don't have a problem with using the Cobb tune. Jeff, I don't know these things so your input would be appreciated.

Last edited by Rocketman1976; May 22, 2008 at 07:59 PM.
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Old May 22, 2008 | 07:38 PM
  #2722  
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i sent this to MM but forgot to post here, no real reason to but it may serve as some sort of collective log of information for others to look at...

ok, 2 more cold/hot drive cycles today and things changed a little, but have settled.

MM 2006_7 MT NA v1_1a

Idle: AFR 14.5-14.9 ; short trim 0 to 1 ; long trim 1

light load/cruise: AFR 14.3-14.8 ; short trim 1 to 3 ; long trim 1 ; load here is 20%-25%

mild load: AFR mid 12s-14.5 ; i ignored(forgot) trims here

full load/WOT: AFR low-mid 11s - mid 13's with some low 14s; also forgot trims here

2006 Shinka; K&N drop in filter; gutted OEM cat; MS catback
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Old May 22, 2008 | 07:41 PM
  #2723  
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Originally Posted by MazdaManiac
Unfortunately, that doesn't apply.

Why are you still running the Cobb tune?
How many more calibrations do I need 2 send you before you install one?
Shoot I would just be happy if you would send me a new level 2 calibration or tell me what I need to do to mine to help you. I sent a video of a 2nd gear pull w/ the AFR's...not the most stable as I was trying to drive and vid but non the less. I have emailed you 2 times now with no response. I emailed you 2 weeks before you did your " mass mail " and I sent you one I believe Tuesday and you have to to get back with me. I understand you are busy, but I would just like to know what I need to do. Some communication would be helpful.
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Old May 22, 2008 | 09:23 PM
  #2724  
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Originally Posted by 0_o Flash
Shoot I would just be happy if you would send me a new level 2 calibration or tell me what I need to do to mine to help you. I sent a video of a 2nd gear pull w/ the AFR's...not the most stable as I was trying to drive and vid but non the less. I have emailed you 2 times now with no response. I emailed you 2 weeks before you did your " mass mail " and I sent you one I believe Tuesday and you have to to get back with me. I understand you are busy, but I would just like to know what I need to do. Some communication would be helpful.
make sure when you email him you send:

forum name
REAL name

model of car and all pertinent mods
current map/flash being used
as much data as necessary on AFR's under idle, light/med/full load and fuel trims

you are right, he is very busy. but he also is making efforts that FAR exceed any obligation he has to help any and all as soon as he can. from my small dealings with Jeff, and what i know of him through friends, the guy spends ALL his time working for us. he doesnt even sleep like a normal man between the AP and the 3071 work.

Last edited by paulmasoner; May 22, 2008 at 09:26 PM.
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Old May 22, 2008 | 09:35 PM
  #2725  
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And if you aren't paying for tune, there is no reason to complain about the time it takes for him to make it for you.

I would rather get a dyno'd tune from Jeff instead of a map based on my data log. I don't mind sticking with the Premade Cobb one, as long as my mods don't cause it to hurt the motor. They have already made this one based on dyno testing, so I figure it should be good enough to hold me over until dyno day.

Last edited by Rocketman1976; May 22, 2008 at 09:38 PM.
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