Cobb [08-14 GT-R] Tuning V3 Accessport with TCM Support

• 2009-2016 Nissan GT-R

Cobb 08-14 GT-R Tuning V3 Accessport with TCM Support 

Part #: AP3-NIS-006

Simple ECU flashing with gauge package! The new in-cabin mountable Accessport V3 has a large, full color, higher resolution screen which allows you to monitor up to six parameters in real time. Fully customizable from the look (multiple bezel colors), layout (set up race, street, or dyno gauge clusters), and mounting options (choose from 1,000s of standard vehicle mounts). And what's looks without brains? More processing power, memory, and storage to flash faster while saving all of your maps and logs. This is your new Accessport.

The GT-R AccessPORT that GT-R owners love has just gotten better. Introducing the new AccessPORT with TCM Support for the GT-R. It has all the same features you love about the AccessPORT, but now it also has the ability to re-flash the Transmission Control Module with performance enhancing software.

Installing the AccessPORT on the TCM starts with downloading the OEM TCM ROM for safekeeping, so the TCM can be returned to its stock configuration at any time. Once the OEM TCM ROM is stored, the AccessPORT flashes a new Level 1 map onto the TCM that is based on the Nissan LC2 logic upgrade, but increases launch revs to 3,300RPM and includes more aggressive clutch engagement and throttle curves than stock LC2 logic. The result is a positive launch that gets the GT-R off and running harder than the stock LC2 logic, but with smoother clutch engagement than the previous LC1 logic. Still not enough for you? A simple re-flash of the TCM with the Level 2 map will have you experiencing the increased punch from raising the launch revs to 3,750RPM!

The R-35 GT-R transmission is an impressive, but complicated engineering wonder, and sometimes adjustments are in order to get it just right. Excessive clutch drag while stationary will cause the GT-R to want to creep forward at a stoplight, while too little drag will make it feel like an automatic's torque converter. COBB Tuning has implemented Clutch Touch Point adjustment via the AccessPORT, offering +/-7 levels of adjustment to set clutch drag right where the driver wants it. This is a live adjustment that does not require a TCM re-flash, simply select the desired level of the Clutch Touch Point engagement, hit Enter and drive! The original AccessPORT opens the door to impressive power gains for the GT-R, which can exceed the transmission's ability to manage that added power, resulting in clutch slip and excessive clutch wear. The AccessPORT with TCM support offers Clutch Capacity adjustment, which controls the hydraulic pressure applied to the clutch plates. Yet another on the fly adjustment without the need for a re-flash, simply select Clutch Capacity from the AccessPORT menu to reveal +/-7 levels of adjustment to control clutch clamping force. Higher horsepower GT-R's can eliminate unwanted clutch slip with a +2 or +3 level of Clutch Capacity. Don't let all that power go to waste! The AccessPORT is the most user friendly reprogramming device for your vehicle's computer. The provided mapping will optimize the air/fuel ratio and ignition timing, remove the speed limiter, and more for performance results you can instantly feel!

But the AccessPORT is so much MORE than just a REFLASH DEVICE. It allows you to also read any of the DTC (trouble) codes on the various computers on the GT-R as well as clear them out of memory (reset them).

Stage 1 (standard, or standard w/ cat back exhaust):

• 91 Octane Fuel (US) - +55 hp and +60 lb/ft torque
• 93 Octane Fuel (US) - +63 hp and +70 lb/ft torque
  
  * Stage 2 (hi-flow cats or no cats and cat back exhaust):
• 91 Octane Fuel (US) - +65 hp and +80 lb/ft torque
• 93 Octane Fuel (US) - +70 hp and +90 lb/ft torque
  
  Improve horsepower, torque, and fuel economy at the touch of a button
  
  Comes with maps for stock cars, catback exhaust, high flow cats, or deleted cats as well as Anti Theft (engine will not start), Valet Mode (reduced rev limit and power), Stock Style (speed limiter deleted only), and Fuel Economy mode. Additional maps may be downloaded from COBB's website as they become available.
  
  Features:
• Easy installation, no need to remove and ship off your ECU, no mechanical or computer skills necessary (built in recovery mode fail safe)
• Takes only a few minutes to install
• Connects to your vehicle via the OBD-II port conveniently located under your dash
• Pre-calibrated to maximize performance of stock or modified vehicles
• Easy-to-read color display
• Update over the Internet to stay up-to-date with the latest features
• Read and clear engine trouble codes (DTC) yourself, eliminating trips to the dealership
• Ability to clear dash lights (stored DTC codes) from ECU, BCM, Multi-AV, IPDM, Pre-crash Seat Belt, Meter/M&A, and Adaptive HL computers
• Ability to turn off the dreaded Bonnet Light
• Not a piggyback - once vehicle's computer has been programmed by the AccessPORT, it can be removed and the settings will stay on your computer.
• Not just an ECU re-flash - AccessPORT features enhancements such as map switching, reading DTCs, performance monitors and more
• May be uninstalled at any time, reverting your ECU with the data stored on it prior to installation

NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY EMISSION CONTROLLED MOTOR VEHICLE.

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We strongly recommend inspecting all parts or items upon arrival before installation. If you identify any damage, imperfections or missing components, report them immediately to sales@jdmuscleusa.com. Do not install the item. Please note that reports of damage, defects, imperfections or missing components after installation will NOT be honored.

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Our policy lasts 30 days. If 30 days have passed since your purchase, unfortunately, we can’t offer you a refund or exchange. To initiate a return, please email us at sales@jdmuscleusa.com.

Eligibility for Returns

✅ Items must be unused and in the same condition as when received.
✅ Items must be in their original packaging.

Non-Returnable Items

❌ Gift cards
❌ Special-order or custom products

How to Initiate a Return

📧 Include the following details in your return request email:

Order Number

Item(s) to be returned

Reason for return

Important Notes:

Do NOT send your purchase back to the manufacturer.

Do NOT return any items without first setting up a return request with us.

Partial Refunds

Partial refunds may be granted under the following conditions:

⚠️ Items not in original condition, damaged, or missing parts not due to our error.
⚠️ Items returned more than 30 days after delivery.

Restocking Fees

Some manufacturers may charge a restocking fee, which includes but not limited to:

ManufacturerRestocking Fee

ESR30%

JDMuscle15%

PLM & Option Lab 20%

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Before placing an order, please confirm availability.

Cancellations within 7 days may be subject to fees to cover third-party transaction costs.

Once the order has been processed (packaged or tracking generated), cancellations are not allowed. Eligible items may be returned instead.

Special-order items cannot be canceled.

Refund Process

🔄 Once your return is received and inspected, we will notify you of the refund status.
💳 Approved refunds will be credited back to your original payment method within 3-10 business days (depending on the payment provider).

Late or Missing Refunds

🔍 Check your bank statement — sometimes the refund may not appear as a new entry but as the disappearance of the pending charge. 📞 Contact your credit card or financing company — they may require additional time for processing.

If you’ve done all of the above and still haven’t received your refund, email us at sales@jdmuscleusa.com for assistance.

Sale Items

Only full-priced items are eligible for returns and refunds.

Exchanges

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Gifts

🎁 If the item was marked as a gift when purchased and shipped directly to you, you will receive a gift credit for the return value.
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Return Shipping

📦 Customers are responsible for return shipping costs unless the item is damaged, defective, or incorrect (in which case we will cover shipping both ways).

Initial shipping costs are non-refundable.

Return shipping costs will be deducted from the refund amount.

For items over $75, consider using a trackable shipping service or purchasing shipping insurance. We are not responsible for lost or damaged items during return shipping.

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