Accessport Updates: January 2015

In our quest for World Domination, we’ve pushed out two large updates for our Accessport product line.  The extremely versatile COBB Accesport now supports the 2015 Subaru WRX CVT and Porsche 996 Turbo/X50/GT2!

2015 WRX

Rounding out USDM Subaru DIT vehicle support, 2015 WRX CVT support is now LIVE for any SUB-004 Accessport!  All new orders shipped from cobbtuning.com will be ready to go out of the box, previously sold Accessports may require a firmware update using Accessport Manager.  All Subaru Accessports now feature our Auto On/Off feature!  This allows the Accessport to power on/off automatically with the vehicle!

Porsche_996TT_blog cover

Further expanding vehicle support in the Porsche market, we are excited to announce the availability of the POR-004 Accessport, supporting the Porsche 996 Turbo/X50/GT2!!  Initially, these Accessports are available only through COBB Authorized Dealers and Protuners.

Contact your preferred dealer now to place your order!!

Mustang Ecoboost – Intake and Intercooler Evaluation!

Our Ford Expert Group has been cranking away with the Ecoboost Mustang! In this video, Braden discusses what he’s been working on with Cold Air Intake and Front Mount Intercooler upgrades!

COBB R&D Update : January 2015

We’ve been hard at work on some new products and features due out in early 2015!

Here’s a quick peak at some of the exciting upcoming releases from the Subaru and Ford Expert Groups!!

2015 WRX Tuning Results : 344 WTQ / 313 WHP

2015 WRX_George_18_blog

We have enjoyed seeing all of the 2015 WRX custom tune results being posted around the ‘net and decided to jump in with our own after a bit of playing around with our car on the Austin R&D dyno today. While this combo of parts isn’t likely to be an pre-configured OTS “StageX” package that is available from us, we try to do as much hard parts testing as we can to make sure we have a good understanding of the cars. It’s important for us to have knowledge over how the car will react to common aftermarket upgrades. No records or anything crazy but this thing is definitely one quick WRX now!

We bolted up all of the airflow mods we have on-hand for the car and decided to see what she could do. A bit more time to continue refining the tune would have likely yielded even larger results, but I quickly “chickened out” after realizing how close we were to 350 wtq. :eek:  It is likely that the connecting rods will prove to be the long-term weak spot for modified FA20DIT cars, so we decided to call it an afternoon with our engine still intact for now :cool:

Engine/Power Modifications on our WRX consist of the following: COBB Tuning Accessport V3, COBB Tuning Turboback Exhaust (Catted), COBB Tuning SF Intake/Airbox (Prototype), TurnInConcepts TGV Delete Housings, Upgraded Aftermarket TMIC.

2015 WRX Dyno Chart

Results vs stock vehicle: +77 wtq (28.8%) , +62 whp (24.6%) 

At this point this car is now making a tad more torque and horsepower than a Stage2+Intake 2015 STI on the very same dyno — very impressive for a 2.0L with diminutive factory turbo. We are slowly beginning to really like these cars now as the uncorking process continues :)

Long term, this testing helped us identify some other areas of the factory ECU where we should focus our future reverse engineering (table/logic discovery) in order to provide the precise control and ease of tunability that the COBB Protuner network demands, even as the power numbers get crazier and crazier as new mods become available over time. We can’t wait to keep pushing this platform and seeing what kind of amazing results you guys achieve over time!

Thank you for your support during the DIT craze!

Cheers

The COBB Subaru Expert Group

Porsche Testing in Japan with Mitch McKee of COBB!

 

I am a big proponent of on track testing calibration’s. We want to be sure that right out of the box you guys are getting a calibration that we are 100% with. We did this with the 997.2 Turbo, taking the car to Laguna Seca and winning the Optima Challenge with a car setup by BBI and tuned by Cobb Tuning using the Accessport.

Now for this we wanted to show the Japanese guys what American tuners are capable of! I think we did pretty good

To start off we had 2 cars to test. A 997.1 GT2 and a 997.1 GT3. The GT2 was bone stock even down to the old Michelin’s. The GT3 had some muffler deletes and suspension.

Both were beautiful cars and it really was an honor that the customers let us test them sight unseen. Creft Motorsports is a shop in Yokohama and they were very helpful in getting the cars all setup.

Both cars were faster by a large margin at Fuji Speedway. Fuji speedway may be one of the most beautiful tracks on the planet as far as I am concerned. With Mt. Fuji looming behind the track it makes for beautiful scenery.

Now on to the pics! As soon as I get a little more time I will get the video up as well. ( Be warned I am a much better engineer than photographer!)

-Mitch

Me with Fuji-San checking datalogs after coming in from a quick morning session.

997.1 GT3 AP

This is just because I love these cars so much:

Thanks for looking guys! We have some more content to put up once it is edited!

2015 Ford Mustang Ecoboost – COBB R&D is underway!

That’s right! Expect awesome power gains and tons of cool features with the COBB Accessport on your Ecoboost Mustang! Our engineers came right out of the gate and have already put a ton of work into Accesstuner Software and Accessport Firmware!

Check out the video below to see what Braden, our Ford Lead R&D Calibrator has been up to!

Nissan GT-R Rolling Launch – Dyno Testing

We’ve been testing some exciting new features for the GT-R platform!  

With roll-racing events becoming more and more popular, our Rolling Launch feature will allow cars to build boost while maintaining a constant speed.  With the release of a button, full power is on tap!

Check out this quick video of our GT-R Experts testing this new feature on our in-house dyno!


 

 

2015 WRX Rev Hang

For 2015, Subaru introduced a completely overhauled WRX!  There are some awesome new changes, like direct injection,  and other changes many aren’t too thrilled about.  Subaru’s new “Rev Hang” logic seems to top the list of complaints.  Luckily though, COBB is hard at work coming up with a solution!

What is Rev Hang?

Typically, when you are in gear and revving high into the RPM range, pressing in the clutch would result in the RPMs quickly falling.  With Rev Hang, the RPM stays constant for a bit and slowly falls.

This isn’t necessarily a bad thing.  However, many car enthusiasts are purists and feel the only inputs the car should be considering, especially when it comes to throttle, come only from the driver.  We tend to agree!

Here’s a quick video of the Rev Hang “Fix” in action:

 

This does look subtle on video but if you own or have driven a 2015 WRX, you know how big a difference this will make!  Check out the latest v111 maps to try out the fix: https://cobb.app.box.com/2015-wrx-v111.  Stay tuned to our Website, Facebook Page, Twitter, Instagram, and Blog for the latest!

2015 Subaru STI Development Update – COBB SF Intake Testing

So, you’ve probably seen some pretty cool early results from hardware swaps on the 2015 STI platform.  But, have you seen any actual data besides some basic dyno charts with really high smoothing?  Probably not. :) Lucky for you, we’re here to provide actual quantified data behind the madness.

Many people were initially disappointed that our first release only included Stage1 maps.  This was because we prefer to *thoroughly* test parts to find out what each modification will do so that we can be sure our Staged Package offerings have a definitive gain for your investment.  For example, here is a NASIOC thread showing some of the testing we did to compare power output when a downpipe is added to a 2015 STI: http://forums.nasioc.com/forums/showthread.php?t=2639122

For intakes, we decided that looking at only power wasn’t good enough.  An age-old claim in Subaru world is that the factory airbox is not restrictive with the stock turbo, and we wanted to see it for ourselves.  We put this to the test by measuring turbo inlet vacuum generated on the stock airbox and with a COBB Tuning SF Intake system fitted to the car.  Garrett refers to vacuum in the turbo inlet as “depression”:  “Any restriction (caused by the air filter or restrictive ducting) will result in a “depression,” or pressure loss, upstream of the compressor that needs to be accounted for when determining pressure ratio.” (http://www.turbobygarrett.com/turbobygarrett/pressure_ratio)

By comparing the depression created by the factory intake against an upgraded intake, we can actually “see” if we have removed a restriction or not.  If the depression is the same, well, all we’ve done is added a noise-maker to the car :)

To complete this test, we first gathered boost and depression data on the stock airbox using a stock-hardware 2015 STI (tuning only), first on wastegate boost pressures only, then at ~17.5psi peak via our Stage1 93 OTS map in “S#” mode.  Next, we gathered the same data on the COBB SF Intake, with no calibration changes other than for the different MAF curve required.

What did we find?  Results!  The stock airbox creates depression levels of a bit over 1psi on wastegate boost at redline, and well over 2psi on the Stage1 boost levels!  What does this mean?  Here in Austin, where the elevation is ~800 ft, the barometer was ~14.21psi for the testing day.  With the stock airbox at redline, the turbo was only being fed with approximately 12psi of pressure due to the depression.  For comparison, this would be the same as running the car at 5500 ft of elevation if there were no depression!

Here is the boost and depression (intake pressure) data for wastegate and for 17.5psi, shown in gauge pressure relative to ambient atmosphere:

Boost and Intake Pressure – Wastegate Spring Only

 

Boost and Intake Pressure – 17.5psi Setting

As you can see, thanks to the reduction in depression with the upgraded intake, boost is a bit higher on the wastegate.  At 17.5psi, we can see that spool has improved and high RPM boost is held out better on the same WGDC settings.  In each case, the depression created by the COBB SF Intake system is roughly half of the factory airbox.  What does this mean?  Simply put, we’ve reduced restriction in the turbo’s inlet path, as shown by the reduction in depression.

I also decided to take this data one step further, which is to calculate the turbocharger’s effective pressure ratio for each case.  One caveat is that we’re looking at post-IC pressures, not pre-IC, but because the intercooler has not changed at all between tests, it shouldn’t skew the results too greatly.

Here is the pressure ratio for each scenario (again, baro in Austin was ~14.21psi on testing day), calculated using Garrett’s methodology here: http://www.turbobygarrett.com/turbobygarrett/pressure_ratio

Pressure Ratio Comparison – Wastegate Spring Only

 

Pressure Ratio Comparison – 17.5psi

On wastegate boost pressures, we can see that there isn’t too drastic of a difference — perhaps a tenth of a point at very most.  However, at 17.5psi, we can see the COBB SF Intake really start to separate itself: pressure ratio is decreased by about two full tenths across the board after spool.  What does this mean?  The turbocharger compressor is now operating more efficiently, at least in terms of the demanded pressure output (boost) again the amount of pressure available at the input.

So, at the end of the day, here’s what power looks like between the two.  COBB SF Intake are the solid lines, stock airbox are the dashed lines:

Stage 1 vs Stage 1+SF Intake Dyno Comparison

Long story short?  On the 2015 STI, even in otherwise-stock configuration, the COBB SF Intake system (and others that have the same or better airflow capabilities) help the turbo breathe easier and in turn, make the same boost more efficiently or more boost at the same efficiency when compared to the stock airbox.

Thanks for reading along! Hopefully you found this data interesting and helpful. We plan to keep providing results like this as we dig in further on the 2015 STI and WRX, so stay tuned :)

Cheers,

The COBB Subaru Expert Group

COBB Releases BMW Stage 1+ Front Mount Intercooler and Stage 2 Downpipe with OTS Map Support

COBB is proud to announce the release of our BMW Front Mount Intercooler and N55 Downpipe along with off-the-shelf map support!

COBB BMW 1 & 3 Series N54-N55 FMIC Kit

COBB N54/N55 FMIC – One of the best power modifications for your BMW 1 or 3 Series – Click here for more pictures and details.

COBB BMW N55 Downpipe Kit

COBB BMW N55 Downpipe – Take your N55 powered BMW up to Stage 2! Click here for more pictures and details.

Tune your ECU for these modifications using our off-the-shelf maps!