Ok, my FI HFCs and Catback will be here on 3/18 and I would like to add a CAI while I'm wrenching on the car as well (At least until I can persuade myself to go broke and get a TT ). There seem to be a lot of different opinions on here, but I'm thinking I will do the Stillen Gen 3. I've read a lot of the posts about the Cobb and I'm a little confused as to what to do.

Is it really worth it to do the CAI before Cobb allows us to custom tune the car? If so, is it worth it to get the Cobb before the custom tuning capability? I'm a tad confused as to what mappings you can get from Cobb, what they actually change, and so on.

Any help or suggestions would be appreciated.

 

I am interested to hear this as well

 

I would go ahead and get the CAI then Cobb. From what i understand, every map on the Cobb when it comes to you make power. Stock Style map makes the most power on a stock Cobb. That is the one i am currently using and it pulls hard for me with just a Catback and intake. Im using this until i go to houston to get a custom tune.

Just get the CAI and Cobb and use stock style map. You still get gains from it but not as much as a custom tune but if some time down the line you want a custom tune. it takes about a hour to go to the tuner and do some Dyno runs.

I honestly think it was worth my Money even without the Custom Tune yet because Stage 1, Stage 2, and Stock style map all make power but a few dyno on here shows that stock style map makes more power than the other. I mean if cobb is making a extra 10-12 Hp with the default map, just imagine what a custom tune will be like

 

I just had a conversation with Cobb representative and he simplify whats the deal. So far Stage 2 is whats available but once you get your other mods they will be recorded on the AP and you will email the info. Following that process Cobb HQ tuners will make a custom map according to your mods. They recommend do dyno once connected so the data gets logged. Hope this info clear some doubts a lil bit. I got mine two days after ordered Stillen headers.

 

Thanks for the inputs....I went ahead and ordered the intake and the Cobb from Stillen, along with a new crank pulley. This weekend will be fun...FI HFCs, FI Carbon Fiber Catback, new pulley, Gen 3 CAI, Cobb

 

OK.. First question. You want to add the AP last since you will be building an ECM calibration file around your specific mods. Anything added at a later date will not be compensated for in the calibration.
Second question.. I answered it in the last statement
Third question.. Cobb is changing the ECM calibration file. This is a file that basically tells the ECM what to do with all the data coming from sensors, actuators, transducers, ect.. Part of that file includes fueling and timing tables, which tells the ECM how when and how much fuel to inject and at what time the spark plug needs to be lit off. The new Cobb files will have more aggressive fueling (more fuel = more power) and will advance timing as much as possible without creating knock. Advancing timing increases in cylinder pressure and temps, thus creating more power. When timing is advanced too much it creates detonation, which is simply different pockets of fuel combusting at once instead of a controlled combustion. Detonation can be fatal to an engine since in cylinder pressures shy rocket. Most modern engines have a knock sensor, which it essentially a microphone that listens for knock in the cylinder. In addition to the tables mentioned, there are other tables altered too. Your sensors may be reading at the high end of their reading range and need to be compensated for..Ex.. Your MAF sensor is flowing a lot more air than was from the factory. These compensation tables tell the ECM how much of a quantity is for the given sensor voltage reading.
The AP is acting like a data logger in the case mentioned above. You install the aftermarket parts and when the AP is hooked up it starts recording ECM data. The AP Stage 1 and 2 maps are general maps for general aftermarket parts. It wont be specific to your Stillen headers, Stillen Gen 3 intake, Greddy exhaust, etc.. What Cobb is doing now is looking at the data log files (recorded from the AP) and building a specific calibration file completely custom to your car based off the ECM data. I’m sure there is a premium charge on top of the price for the AP right?

 

Yesssssssssssssssssir! That charge is $175. You have to long and send the data to Cobb. I think it takes a week from what I've read. By far cheaper than having someone tune the car that is not familiar with the platform.

Btw - This is the route Im going. Cat-back goes on this weekend. AAM HFC's are on, and AAM custom made intake is on. Drive the car for a lil bit, then put the tune on. I guess you would want the ecu to learn the new exhaust before the COBB flash, no? Can someone chime in here.

 

You want to tune the car last. If you tune to specific mods, then change something, it wont be compensated for in the calibration.

 

you completely missed the question.....My question was to drive the car before the Cobb flash, so the (stock) ecu adapts to the new bolt on (cat back). Then after 30-50 miles throw the Cobb tune on there and "tune" the car. Im not a noob, just not a pro at the VQ's. I dont think it makes sense to throw the COBB tune on the car 'til the ecu adapts to it first. I need the confirmation.

Thanks for the thought

 

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 10"><meta name="Originator" content="Microsoft Word 10"><link rel="File-List" href="file:///C:%5CDOCUME%7E1%5CBRANDO%7E1%5CLOCALS%7E1%5CTemp%5 Cmsohtml1%5C01%5Cclip_filelist.xml"><link rel="Edit-Time-Data" href="file:///C:%5CDOCUME%7E1%5CBRANDO%7E1%5CLOCALS%7E1%5CTemp%5 Cmsohtml1%5C01%5Cclip_editdata.mso"><!--[if !mso]> <style> v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} </style> <![endif]--><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDocument> </xml><![endif]--><style> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} </style> <![endif]--> I think this is a big myth with ECM's. The ECM doesn’t "learn" anything. Your calibration file is what tells the ECM to do with the incoming data from sensors. If you have a stock cal in the ECM, all the compensation tables remain the same. What a tune does is replace the stock tables with more aggressive tables, multipliers, coefficients, etc.. You will be fine to do it either way, load the cal directly after the parts are installed or drive then install. Your final objective is to have a calibration that is in sync with your mods and compensates for ALL of them, anything less and your not performing optimally. G/L<!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" oreferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"/> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"/> <v:f eqn="sum @0 1 0"/> <v:f eqn="sum 0 0 @1"/> <v:f eqn="prod @2 1 2"/> <v:f eqn="prod @3 21600 pixelWidth"/> <v:f eqn="prod @3 21600 pixelHeight"/> <v:f eqn="sum @0 0 1"/> <v:f eqn="prod @6 1 2"/> <v:f eqn="prod @7 21600 pixelWidth"/> <v:f eqn="sum @8 21600 0"/> <v:f eqn="prod @7 21600 pixelHeight"/> <v:f eqn="sum @10 21600 0"/> </v:formulas> <vath o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"/> <o:lock v:ext="edit" aspectratio="t"/> </v:shapetype><v:shape id="_x0000_i1025" type="#_x0000_t75" alt="" style='width:24.75pt; height:11.25pt'> <v:imagedata src="file:///C:\DOCUME~1\BRANDO~1\LOCALS~1\Temp\msohtml1\01\cli p_image001.gif" o:href="https://www.myg37.com/forums/images/smilies/biggthumpup.gif"/> </v:shape><![endif]--><!--[if !vml]--> <!--[endif]-->

 

You don't need to drive your car 30-50 miles after installation of exhaust. Your stock ECU will be overwritten by the new one anyways. Cobb AP will reset all learning info once you flash it or anytime you change map. Also you can reset it whenever you feel like it.
I will dyno my car soon and find out if the revised maps will make more power than stock style.

 

Im just curious why there was for a while the mass selling of used cobbs on this site, hmmmmm

 

I think on one point AP was crashing and had some glitch on software. Cobb fixed all this problem now. I was one of the victims. My AP was saying I have a GTR and won't let me unistall it. It's just gonna get better since the 370Z maps will be similar to ours. So more maps should come out.

 

Where are all the "maps" that people are talkign about. I have a custom AAM made intake, and I want to be able to get he most from it. BTW - stage 2 is up as is the new exhaust. Damn, car pulls hard now. Love it.

 

I don't thnk there's any new maps out from our cars yet. Have you tried running the stock style map? There are some dyno that the stock style is running stronger than the stage2. I'm using stock style for now until I dyno my car again.