anyone have a cobb tuner?

[silverbullit05]

just for referance the accessport was not my first mod i have replaced much of the bolt on part that are offered minus a few like mrev2, hf cat/test pipes, or headers. however i think if the car was stock i would have wasted my money by buying the accessport. but regardless if you look at youtube or myspace videos you will see a video of a 02 maxima with the 3.0L with i/h/e and a tune this car is beating stock and slightly modded g35. the maxima is maroon. so i think its a good idea to adjust maps to the mods you have. to the question about cai on the g's this mod doesnt lean a/f ratio out do to the mass air sensor adjusts for the cooler more denser air. then the ecu either holds the injector open longer or shorter depending on how your hammering on the throttle. hope that clears things up a little

[Sentientbydesign]

Actually, the intake mods have been shown to lean out the A/F.

[tollboothwilley]

anytime you add more AIR without adding more FUEL you will lean it out somewhat

thats what happens with intake mods....

ECU mapping can be very beneficial for any given car regardless. Each engine is different and the factory makes sure everything is in spec but they don't tune them individually.

[suby01]

just for referance the accessport was not my first mod i have replaced much of the bolt on part that are offered minus a few like mrev2, hf cat/test pipes, or headers. however i think if the car was stock i would have wasted my money by buying the accessport. but regardless if you look at youtube or myspace videos you will see a video of a 02 maxima with the 3.0L with i/h/e and a tune this car is beating stock and slightly modded g35. the maxima is maroon. so i think its a good idea to adjust maps to the mods you have. to the question about cai on the g's this mod doesnt lean a/f ratio out do to the mass air sensor adjusts for the cooler more denser air. then the ecu either holds the injector open longer or shorter depending on how your hammering on the throttle. hope that clears things up a little

dude the vid that your talking about is mine. my G at the time was brand new not broken in. if you would like to see a rematch of that max heres one with my car camera car and how it ends up. not to thread jack but back to cobb, ive been talking to them forever there is a thread started here all about what we talked about the failport.http://forums.g35club.org/zero...age=1thats a thread that you propably seen that i started over a year ago and a lot of people here still calling and emailing them whats the answer that they get "soon".

[tollboothwilley]

i wonder if the cobb tuner advances the timing and remaps the A/F ratios...

I think it'd almost be better to just get your car tuned after you have done all the mods you plan on doing as opposed to getting the COBB which doesn't seem like its going to come out for my car...

[Sentientbydesign]

The only benefit to EM is the ability to swap profiles, but I don't know if there is a large enough margin to safely tune for DD versus performance.

[tollboothwilley]

since you really don't need to be switching back and forth thats why i think that it would be better to get the timing advance + a tune for your car.

[silverbullit05]

hey where did you race this guy with the max? i do have to say its pretty fast id like to run him sometime

[Sentientbydesign]

I'm going to do some research into the Osiris by Uprev. Shawn Church was selling them and the whole system seems much better than the Accessport because the Osiris has been released for custom tunes and they reside with your car versus having a piggyback.

My goal is to have a fuel economy map as well as a DD to smooth out my tq curve (dyno showed it to be very jumpy).

[Jacko3]

Silverbullit05:

Withh all your mods, which i also have, add a test pipe and switch to Mobil 1 EP Synthetic 5W-30 or Royal Purple 5w-30, and go back to the dyno and see what the results look like. Give it a few weeks and then go driving at about 70 miles per hour and tell me what the outcome looks like. I think you will be surprised with improved gas mileage and high end horpower.

I have the mrevv, JWT popcharger and z-tube, 5/16/spacer, stillen catback exhaust, and strupp test pipes.

[Jacko3]

SBD:

I see exactly what you are saying. I will tend to agree with them. I am somewhat skeptical of cobb tuning device. I will rather pay the extra money and get a UTECH piggyback EMU specifically tuned for my car with all modifications done.

I beleive a well thought out selection of modification parts will yield just as good a result or better, without even any tuning, as is with the cobb tuner, because our ECUs automatically adjust with time as you add different modifications to the car----intake mods tend to take longer to adjust to the car, than exhaust mods, and there will always generally be a lean condition in intake modifications--fact of life for the G-35.

What cobb tuner is doing is unnaturally adjusting ECU parameters while at some level in your ECU, the ECU is probably getting some confused readings because the cobb tuner while trying to unnaturally adjust important parameters against the natural learning tendencies of our ECU based on installed existing and actual mods on the car, may obliviously be ignoring other small but important parameters.

Changing one set of significant parameters or a few sets of significant parameters, artificailly, using cobb tuning, will not naturally cause other less important but useful parameters to change as well, especially when you have a modification on the car. But simple modifications and natural learning of the ECU without tuning or at best with a piggy back system specifically tuned for your car, will cause these other small but useful parameters to adjust accordingly to changes being made with the big and important parameters.

Normal modifications cause our ECU to naturally evolve--thats why it is called a self-learning system. You want the ECU to learn by itself and naturally adapt to all the parameters, and not be manipulated artifically on the fly as it is with cobb tuning for just the big parameters.

I have played around with the test pipe and 02 sensors with my technician to see how our cars ECU actually behave with modifications and I am impressed with the results of its natural learning ability. Infiniti did a great job with the self-learning ability of the ECU of the 350Z and G-35. The re-learning ability of our cars even when it is running lean, keeps it safe and structurally sound as that act alone causes the ECU to either etard or increase the timing to the appropriate levels for safe funtioning. Piggy back systems are also great as they are a totally separate map derived from existing ECU readings/map. They are not an artifical manipulation of current ECU parameters in the ECU itself, as Cobb tuners do.

I am planning to add Strupp headers which are proven for additional performance amd I am sure with all my mods, i should be able to flog many cars that have cobb systems. My beleif is that cobb tuner maybe best with cars that absolutley do not have any type of modifications at all. Just my opinion and 2 cents. Cobb needs to come out fully and support this product with a confident nod that it won't hurt anything in the G-35 with any modifications done to the car. I am doubtful they will go this far.


Modified by Jacko3 at 1:00 PM 11/13/2008

[Sentientbydesign]

Jacko,

Any idea what your AFR looks like through the power band?

Mine was at 15 in the midrange which was causing some issues. And I was very rich on the high end with an 11.1. My goal with an Osiris is to get custom fuel maps to smooth out the AFR. I believe that I can gain some top end and smooth out my mid-range torque by having more appropriate fuel maps.

On the flip side. I did not have time to allow the G to be properly reset between dyno runs and this may have been the culprit for some of my fuel issues.

I think I'm going to take the car back and get it dynoed one more time with AFR to see how much compensation I'll need.

[suby01]

hey where did you race this guy with the max? i do have to say its pretty fast id like to run him sometime

he sold it and now has a '06 G35s 6mt with pop charger spacer exhaust, and unfortunatly still cant keep up to mine. it is close tho.

[Jacko3]

Nate:

I haven't checked the actual A/F ratio . Instead, I and my technician have been going by the alpha settings in the ECU, which has to be within a specific range, mostly for emmission purposes. Last time we checked, i was at 13% above the 100% ECU parameters, which meant I was probably running lean already---it had no impact on the get up and go and/or power of the car. Of course my testpipes were the culprit here because of the new inputs from the 02 sensors placed in the spark plug antifoulers. So, I owe you two sets of data:

1. A dyno run to determine my actual Air/Fuel ratio and actual horsepower and torque.

2. My MPG, which apparently, is the best I have seen so far--very impressive.

[JDM Sam]

any one get it for the g37 yet? i'm thinking about getting one from my friend who's a cobb dealer. it's supposed to be an ECU flash not a piggyback.

[tollboothwilley]

he sold it and now has a '06 G35s 6mt with pop charger spacer exhaust, and unfortunatly still cant keep up to mine. it is close tho.

tell him to get the MREV2...since he needs it for that car to make the plenum spacer of any worth

[tollboothwilley]

any one get it for the g37 yet? i'm thinking about getting one from my friend who's a cobb dealer. it's supposed to be an ECU flash not a piggyback.

Sam, ya the accessPORT is supposed to be a ECU flash tool. Some parts act like piggyback since it does readings from the ECU and stuff.

I'd get the AP for the G37. Supposed to be about to get another 36HP with the stage 2 tune which, if IIRC, doesn't require any mods.

[Sentientbydesign]

Sam, ya the accessPORT is supposed to be a ECU flash tool. Some parts act like piggyback since it does readings from the ECU and stuff.

I'd get the AP for the G37. Supposed to be about to get another 36HP with the stage 2 tune which, if IIRC, doesn't require any mods.

36 hp out of the AP which barely yields 7 on the G35? How come I see a problem with that?

I still vote for Osiris from UpRev. UpRev allows for custom tunes on the Gs. You can't do that with the cobb yet.

[tollboothwilley]

thats 36 to the crank...from stock i believe. There is also a stage 2+ for cars that have test pipes or HFC's that should yield higher gains.

[TeflonG35]

I thought the cobb could be custom tuned at cobb autherized shops.

[Sentientbydesign]

When I spoke to Shawn Church, he said that Cobb wasn't allowing it yet.

[tollboothwilley]

I don't think its they they aren't authorizing it yet...I think its more that they are still waiting for the equipment for deployment to dealers. I doubt its even done... COBB seems like they aren't doing anything at all

[oxymoron]

SBD:

I see exactly what you are saying. I will tend to agree with them. I am somewhat skeptical of cobb tuning device. I will rather pay the extra money and get a UTECH piggyback EMU specifically tuned for my car with all modifications done.

I beleive a well thought out selection of modification parts will yield just as good a result or better, without even any tuning, as is with the cobb tuner, because our ECUs automatically adjust with time as you add different modifications to the car----intake mods tend to take longer to adjust to the car, than exhaust mods, and there will always generally be a lean condition in intake modifications--fact of life for the G-35.

What cobb tuner is doing is unnaturally adjusting ECU parameters while at some level in your ECU, the ECU is probably getting some confused readings because the cobb tuner while trying to unnaturally adjust important parameters against the natural learning tendencies of our ECU based on installed existing and actual mods on the car, may obliviously be ignoring other small but important parameters.

Changing one set of significant parameters or a few sets of significant parameters, artificailly, using cobb tuning, will not naturally cause other less important but useful parameters to change as well, especially when you have a modification on the car. But simple modifications and natural learning of the ECU without tuning or at best with a piggy back system specifically tuned for your car, will cause these other small but useful parameters to adjust accordingly to changes being made with the big and important parameters.

Normal modifications cause our ECU to naturally evolve--thats why it is called a self-learning system. You want the ECU to learn by itself and naturally adapt to all the parameters, and not be manipulated artifically on the fly as it is with cobb tuning for just the big parameters.

I have played around with the test pipe and 02 sensors with my technician to see how our cars ECU actually behave with modifications and I am impressed with the results of its natural learning ability. Infiniti did a great job with the self-learning ability of the ECU of the 350Z and G-35. The re-learning ability of our cars even when it is running lean, keeps it safe and structurally sound as that act alone causes the ECU to either etard or increase the timing to the appropriate levels for safe funtioning. Piggy back systems are also great as they are a totally separate map derived from existing ECU readings/map. They are not an artifical manipulation of current ECU parameters in the ECU itself, as Cobb tuners do.

I am planning to add Strupp headers which are proven for additional performance amd I am sure with all my mods, i should be able to flog many cars that have cobb systems. My beleif is that cobb tuner maybe best with cars that absolutley do not have any type of modifications at all. Just my opinion and 2 cents. Cobb needs to come out fully and support this product with a confident nod that it won't hurt anything in the G-35 with any modifications done to the car. I am doubtful they will go this far.

Modified by Jacko3 at 1:00 PM 11/13/2008

OH, you are so full of:

[Sentientbydesign]

OH, you are so full of:

Welcome.

What was the point of your post?

The guy you quoted is banned IIRC.

I still haven't seen or spoken to anybody with a Cobb device.

I still stand behind getting a custom UpRev Tune.