2007 GTC imported the first R35 GT-R into Europe. We then spent the
next 24 months pushing the GT-R to its limits for our research &
development to take it to the next level.
data from use on the road as well as Silverstone, Brands Hatch,
Mondello (Ireland), Duns fold park (Top Gear track), Rockingham,
Santa Pod drag strip and of course the dyno !
480hp/435lbft out of the factory wasn’t enough for some, GTC
can now offer Nissan R35 GT-R Owners the ammunition to obliterate all
contenders, with their highly developed Performance Package; the “GTC
from simply remaps to gain 100whp to full blown 700R, 800R +
of The Stock R35 GT-R..
stock trim, Nissan claim the GT-R produces in the region of 480bhp/
435lbft from the VR38DETT V6 Twin Turbocharged Motor. However through
testing of the various standard vehicles, power and torque levels
varied tremendously from car to car, with results anywhere between
est.490bhp max, and 478bhp min at the flywheel, and torque levels
ranging from 430lbft to 450lbft. Whilst the power levels from stock
vehicles varied a great deal, a number of common factors were noted
across the range;
stock form, the GT-R runs extremely rich (over fuelling) across the
RPM range, in particular the turbo spool area at around 2,500->3000
rpm, and so rich after 4,500 rpm, that the Dyno’s Wideband O2
Sensor max’d out at 0.68 Lambda. This is most certainly an
overcautious safety condition, typical of most mass produced
Boost Pressure was generally recorded at around 0.8bar max at
3250rpm, with fairly efficient boost control, dropping off to 0.6bar
at the top of the RPM range.
the compact engine bay is very well designed with the low-slung twin
IHI Turbochargers hidden on the hips of the V6 VR38DETT unapparent
from first glance under the hood. The stock exhaust system is of
cheap restrictive design, with the presence of 4 Catalytic Converters
(2 per bank), small diameter pipework in sections, and ‘Bolt-On
Tail Pipe Trims’, there are a great deal of improvements to be
a rewarding drive, the GT-R can be drastically improved with a small
degree of modification, in summary, bringing the car out of its
Manufacturer’s Conformity & Safety Focused Jelly-Mould, and
truly letting the Twin Turbocharged V6 scream up throughout the RPM
range to redline, emphasising the engine’s power delivery.
have formulated a very well researched Performance Package that aims
to provide the customer with an even greater level of enjoyment from
driving the car in all terms of driving experience.
the period of the launch of the GT-R, the general consensus was that
the GT-R would be equipped with an ECU (Engine Control Unit) that
could not be cracked by any of the most respected Aftermarket Tuners
in the industry. The inclusion of CAN-Bus System in the GT-R
(Controller Area Network – a system protocol where virtually
every electrical component in the vehicle can communicate with each
other, integrating together to form a network) would mean that an
Aftermarket Full-Standalone ECU replacement (allowing full engine
control by the Map Programming Engineer) would have to have the
ability to work together in-chain with the entire system of
components, in-effect, the ability to communicate with every
electrical component, from e.g. the ABS Sensors utilising the same
circuit paths as information sent from the Body Angle Sensor, the
entire network of the GTR’s components rely on the next
component to operate correctly, all via the ECU….a mammoth
task from every aspect. With such a highly intelligent new generation
of Sports Car, came the task of mastering ways of allowing experts in
to make the necessary adjustments.
company that has stood out with its unique solution to adjusting the
engine control system on the GT-R, is Cobb Tuning, a US Company
specialising in ECU Remapping Hardware. The company was one of the
first in the world to release a device allowing full ECU Access on
the Nissan GT-R, and has reached global success in its products’
simplicity and effectiveness.
Cobb Tuning ‘AccessPORT is a Simple Hardware Interface that
allows the User to communicate with their GT-R ECU. The Hand-Held
Device connects easily to the OBDII Communication Electrical Port in
the Driver Cabin, at which point, the User has the ability to make a
number of safe and fool-proof adjustments in the ECU.
AccessPORT main function is to allow the User to install and switch
between pre-designed Fuel and Ignition Maps in order to change the
performance of the car. The Pre-Designed Maps are tried, tested and
built by Cobb Tuning themselves, who have developed a great number of
variants of maps based on, Country of Origin (where the car was
built), Fuel Used, and Modifications on the Car.
map, can easily be loaded into the ECU via the AccessPORT at the
User’s will, with the safe knowledge that the original existing
Map from Factory can be saved and restored at any period. Each of the
Performance Increasing Maps are available in various different Fuel
Types (USA to Europe to Japan). Another key feature is the
development program offered by Cobb Tuning, where maps are constantly
being upgraded, altered and improved, with an increasing amount of
maps available for free download by the user. In addition, the
AccessPORT allows Diagnostic Functions, in its ability to check and
remove Trouble Codes that the ECU may store in relation to the
condition of the car, e.g. Tyre Pressure Warning Lights, which can
only otherwise be extinguished by Nissan Dealerships. The ease in
which the AccessPORT allows interaction between the user and ECU is
remarkable, and through its distinctive disadvantages (no actual
ability to build custom maps, no remapping software available, and
the maps are all generic), the Access Port has proven to be a hit
with GT-R Owners.
that very reason, GTC (who are the official UK Dealer for Cobb Tuning
& accesstuner pro mapper) began to test the Access Port during
its Beta Testing Period, and throughout the development, have been
impressed with the results achieved in terms of practicality,
user-friendliness, and success in increasing the performance of the
GT-R, combined with their improved Exhaust System. The AccessPORT is
supplied, synchronised, and installed by GTC during the 560HP
Conversion, and the most suitable Map is applied to the ECU. The User
is able to swap back to the original Nissan Factory Map at any
period, which is ideal for owners concerned with Manufacturer’s
Warranty; the map swapping leaves no trace on the ECU.
net result offered by GTC is a complete transformation in the way the
R35 GT-R drives. Customers have reported “Night and Day”
transformation of the car, with the performance increases very
apparent during test driving.
the 560HP Conversion will achieve est.560-570bhp at the flywheel @
6750rpm, est.550lbft @ 3,600 rpm at a reliable 1.1bar
to Stock; est.480bhp at the flywheel @ 6250rpm, est.450lbft @ 3750rpm
is a net gain of around +90bhp (+18%) and +100lbft (+22%) at the
key factors are;
Ease of installation,
Rewarding results in terms of performance transformation with zero
drawbacks, - Safety of the upgrade in terms of longevity of the
engine and transmission systems in the car.
a great deal of research and development devoted in tuning and racing
the Nissan R35 GT-R, combined with the unique passion that the entire
team personally have in the GT-R and it’s heritage, fortunate
owners of the new super car from Nissan are awarded with one of the
highest level of quality of Performance Upgrade Packages ever offered
in the U.K.