Cobb AccessPort for 370Z!

Z eliminator · 09-18-2009, 09:11 AM

Does anybody have a cobb map for a 370 Z . 7AT with the full stillen package ?
I have the berk cats instead of the stillen cats.

thanks

ssqpolo · 09-18-2009, 09:44 AM

Quote:

Originally Posted by semtex

Yeah, COBB isn't doing much for their reputation amongst 370Z owners, are they?

no, but they're kickin *** with the GTR right now. The cobb is like the stillen G3s of the GTR...everybody must have! sucks that its not working with the 370z as of now. Im sure when all is sorted out, it will be a great product. right now, i just think they are putting their focus elsewhere...like the GTR

westpak · 09-19-2009, 01:35 AM

Quote:

Originally Posted by ssqpolo

no, but they're kickin *** with the GTR right now. The cobb is like the stillen G3s of the GTR...everybody must have! sucks that its not working with the 370z as of now. Im sure when all is sorted out, it will be a great product. right now, i just think they are putting their focus elsewhere...like the GTR

do it do it

LOL don't how you can resist, we just tuned another GT-R to 545AWHP on the mustang dyno, what a beast

Scotts-GTR · 09-19-2009, 11:34 AM

As a GTR owner I can tell you that life is not the same since the Cobb AP. Its a must have for any GT-R owner. Huge gains to be had in just an AP and midpipe. That said, I am waiting for good results on the 370Z.

Denny McLain · 09-19-2009, 03:08 PM

Quote:

Originally Posted by drisko

Why hasn't COBB released any base maps yet!? The current firmware is still technically the 350Z version...still has the 350Z image and model description is "350Z"..

Because it doesn't work as of yet. Think you answered yourself below.

[/QUOTE]Wish COBB would at least give us an ETA on when the 370Z is going to be "officially" supported. I just called them today and they couldn't give me a date or even if they had made any progress on it.[/QUOTE]

Coming from a surgical product development background, understand a few spit balls are thrown at ya at times and it's hard to establish true timelines. Sure they are trying.

My impression is they are a pretty stand-up bunch. However, Cobbs really needs to be a bit more forthright as I really did not need an oil cooler and spent a lot of time lowering my intake temps trying to eliminate that as an issue. Solved a problem that really wasn't a problem, not really fair if ya know what I mean.

Finally got a response back from Neil Bywater at Cobb:

"Denny, we are Still working on updates for the 370Z and I know it can be frustrating but it is a brand new platform. Calvin has been communicating with the engineers in Utah and we will have answers and reasons why the ecu is doing what it is doing as soon as possible. Thank you for working with us.

Neil"

Quote:

Originally Posted by westpak@HPLogic

do it do it

LOL don't how you can resist, we just tuned another GT-R to 545AWHP on the mustang dyno, what a beast

Do what? It doesn't work yet. It's kinda like the old phrase: If if's and buts were candy and nuts, we would all have a Merry Christmas." Right now it's a lump of coal that hopefully will turn into a diamond.

Plus, as probably everyone reading this string knows; tuning works if the tuning program works and forced induction cars are exponentially more responsive to tuning.

westpak · 09-19-2009, 04:25 PM

Quote:

Originally Posted by Denny McLain

Do what? It doesn't work yet. It's kinda like the old phrase: If if's and buts were candy and nuts, we would all have a Merry Christmas." Right now it's a lump of coal that hopefully will turn into a diamond.

Plus, as probably everyone reading this string knows; tuning works if the tuning program works and forced induction cars are exponentially more responsive to tuning.

I was referring to ssqpolo and his GT-R not his 370Z, I agree to wait on the 370Z, although we are going to use the accessport on the 370Z Twin Turbo we are just finishing up, which should work since we will be taking timing out and not trying to add it to get more power as in NA.

boosted cars are much easier to get power out of, just turn up the boost and turn down the timing and you are golden, well a little more involved but you get it

Denny McLain · 09-22-2009, 06:16 PM

Quote:

Originally Posted by westpak@HPLogic

I agree to wait on the 370Z, although we are going to use the accessport on the 370Z Twin Turbo we are just finishing up, which should work since we will be taking timing out and not trying to add it to get more power as in NA.

The AccessPort for whatever reasons takes out midrange timing on its own. 1-3 degrees between 4500 and 6000.

After spending a whole bunch of time trying to tie the strings together to no avail, finally figured out there is nothing you can do to effect the timing with the AccessPort. Think (the key word is "think") temps do play a role as the timing did vary, but doing anything that is controlled by the end user of the AccessPort was non-existent for me. Cobb confirmed the timing did nothing also.

Good luck on the tune, if you can get it to work your certainly a better man than me or Calvin whom is the tuner at Cobb as it didn't it to click for him either.

HP Logic · 09-22-2009, 08:31 PM

Quote:

Originally Posted by Denny McLain

The AccessPort for whatever reasons takes out midrange timing on its own. 1-3 degrees between 4500 and 6000.

.

...Bingo....the car does have Dynamic timing control....on multiple redundant levels...

I have tested temp based timing control on the 370z with variable resistors and have made great progress in maintaining timing....I relayed my findings to Cobb the very first day the AP was in my hands....all we can really do now is wait and hope these definitions make it to the Tuner software for the end-user to have access to.

-Jack

ssqpolo · 09-22-2009, 10:22 PM

lol. i went into the shop wanting a cobb and exhuast. now u got us hooked on some crazy kit! fastest stock turbo GTR...here we come. or should we just got for highest hp w/turbo upgrade...decisions decisions. i think we should make the the offiicial hp logic car. that way, u can do whatever u want with it. soo many damn possibilities on this car, its hard to go down one avenue.

Quote:

Originally Posted by westpak@HPLogic

do it do it

LOL don't how you can resist, we just tuned another GT-R to 545AWHP on the mustang dyno, what a beast

kannibul · 09-23-2009, 12:33 AM

Quote:

Originally Posted by Denny McLain

There is a lot of conjecture that can be made here. If you look closely at the dyno sheet there are slight changes around 4500 rpm, 7100 rpm and 7700 rpm. When I saw those, the first thing I did was check the fuel/air and then ask Calvin if the car was pulling out timing at those points. He said the timing was good and his feeling was the car was changing cam timing at those points and a lot more could be had when the VVEL software is perfected. You would see a puff of smoke every time it hit the 7100-7200 mark, so something was going on.

Also..... while I'm making blind guesses, might as well make a few more. Notice the slight improvements in the 2000 to 4500 range where Calvin thought the first VVEL table was. It did for sure improve slightly in that range. Is it tuning software, or does the car learn one VVEL table at a time? Will it pick up on top later?

The rev limit was set from 7500 to 8000 rpm and as you can see, it takes a sharp drop just past 7500 rpm. Is that because it needs to learn from never being there? Or, did the engineers pull back on cam timing to keep people from over revving the engine??

Is the tac accurate? I now see it hit 8200 and doesn't hit the limiter. Or, is the new rev limit not accurate?

Inquiring minds want to know.

Puff of smoke = knock sensor = degraded timing?

kannibul · 09-23-2009, 12:35 AM

Quote:

Originally Posted by Denny McLain

Every performance car manufacturer is infamous for sandbagging. Look at the new Nismo. All of a sudden the redline is 7900 rpm and the car makes 350hp from a better exhaust. Will that be standard for all 2010 350Z sport models? What about 2011? There is more in the engine and it's in the computer. I seriously doubt they will do a redo on the engine for the next 4-5 years, just computer/bolt on tweaks.

Could someone swap ECU from the new NISMO, and post some dyno numbers?

I wonder what it'd do in a stock Z without the NISMO bolt-ons...

Denny McLain · 09-23-2009, 09:35 AM

Quote:

Originally Posted by HP Logic

...Bingo....the car does have Dynamic timing control....on multiple redundant levels...

I have tested temp based timing control on the 370z with variable resistors and have made great progress in maintaining timing....I relayed my findings to Cobb the very first day the AP was in my hands....all we can really do now is wait and hope these definitions make it to the Tuner software for the end-user to have access to.

-Jack

Does that mean you were able to make it stop pulling out timing in that range AFTER you used AccessPort to tune using the resisters?

Right now using a homemade ram air to the Stillen G3 filters and heat barrier wrapped G3 tubes. There are four layers around each MAF.

http://s412.photobucket.com/albums/p...t=DSC00613.jpg

http://s412.photobucket.com/albums/p...t=DSC00598.jpg

The intake temps are as close as 3 degrees over ambient on a cool motor during open throttle. In normal driving the intake temps stabilize to only over 8 degrees over ambient. In addition, with the GTM oil cooler my oil temps in normal driving do not go over 192 degrees and water temps are typically about 5 degrees below that.

http://s412.photobucket.com/albums/p...t=DSC00603.jpg

The last log session is what was posted prior whereby the car did pick up overall timing in 72 ambient weather and 183 water temps, however there is still a dip in the mid range as you can see in the timing table.

Exactly how many hoops do you have to jump through and what in the hell is Nissan thinking if that is the case? Just don't see the average user going as far as I did to stabilize temps, yet it still pulls out timing. SAE conditions are 67 degrees and 29.61 barometric pressure and just isn't that far off.

Or........When comparing baseline dyno to Cobb tuning the car pulls out midrange timing and did not do it before. Still think the AcessPort induced the midrange fallout and Nissan for the overall timing loss in higher temps.

http://i618.photobucket.com/albums/t.../DennyCobb.jpg

http://s412.photobucket.com/albums/p...neRun2-std.jpg

Denny McLain · 09-23-2009, 09:42 AM

Quote:

Originally Posted by kannibul

Puff of smoke = knock sensor = degraded timing?

Exactly. Calvin said he saw no hint of retard on his logging. However, when looking at my own posted scanning log; see a 2 degree hit in timing about the same time you would see a puff.

drisko · 09-24-2009, 02:31 PM

So, can the TechnoSquare software or any other tuning solution adjusting timing? I just want to know if this is even something possible for COBB to fix.

Damn, wish someone from COBB would chime in on this thread. We really need some answers on what is going on with the 370Z Accessport.

drisko · 10-01-2009, 03:01 PM

^ So does anyone know if the ignition timing on the 370Z is actually tunable?

09-19-2009, 11:34 AM	#109 (permalink)
Scotts-GTR Base Member Join Date: Apr 2009 Location: Boston Posts: 13 Drives: 09 GTR Rep Power: 16	As a GTR owner I can tell you that life is not the same since the Cobb AP. Its a must have for any GT-R owner. Huge gains to be had in just an AP and midpipe. That said, I am waiting for good results on the 370Z. __________________ 2009 GTR 2009 370Z (Coming 6/09) 2008 X5 5.8

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09-18-2009, 09:11 AM	#106 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 19	Does anybody have a cobb map for a 370 Z . 7AT with the full stillen package ? I have the berk cats instead of the stillen cats. thanks

09-24-2009, 02:31 PM	#119 (permalink)
drisko Base Member Join Date: Jan 2009 Location: So Cal Age: 43 Posts: 160 Drives: 09 370Z PW Tour S 6M Rep Power: 16	So, can the TechnoSquare software or any other tuning solution adjusting timing? I just want to know if this is even something possible for COBB to fix. Damn, wish someone from COBB would chime in on this thread. We really need some answers on what is going on with the 370Z Accessport.

10-01-2009, 03:01 PM	#120 (permalink)
drisko Base Member Join Date: Jan 2009 Location: So Cal Age: 43 Posts: 160 Drives: 09 370Z PW Tour S 6M Rep Power: 16	^ So does anyone know if the ignition timing on the 370Z is actually tunable?