2007 997TT With EVT775 Kit, HRE 893R Wheels & TechArt Coilovers

This 2007 White 997 TT came to us straight from the Porsche dealership with only a few miles on the odometer. Originally she came in for the venerable Stage IV kit. We set about changing the exhaust, cats and headers to allow the car to breathe better and let the turbos spool up faster and also sound more aggressive. For improved flow and cooling we also installed the EVO intercooler kit along with the Boost Hose kit. The car was then bumped up to the EVT700 upgrade with upgraded turbos. This car also sport a superior suspension set up with the new Tech Art coil over kit and some nice interior upgrades as well. With a few exterior accents including the Tech Art rear valence/wing and custom 19 inch HRE 893R wheels the car has become a firm favorite in these parts.


The first phase is to get the car on our super-low profile lift and let the car cool down.


Shown here are just some of the goodies needed to take this car up to 610
horses...


Once the car cools down we tackle those restrictive looking factory headers (carried over from the 996TT). Notice the unequal length tubes, which are also rough on the inside causing turbulence instead of free-flowing exhaust gases that your turbos require for a quick spool.


Off with the wheels, rear bumper, heat shield and fender lines revealing a heavy factory exhaust. With 10 PSI of back pressure it is essential to uncork the car so that the turbos can feed off of improved flow


Next we remove the exhaust system weighing in at 75 pounds!


Next we remove the stock turbos and replace them with the EVT700 turbos and the EVO BRV's.


Out comes the transmission and stock clutch in order for our beefier Stage II clutch. Higher clamping force is needed for this level of power.


Next the light-weight Tubi Exhaust system is installed. This gets rid of most of the back pressure and allows for the turbos to also spool up faster. There is no resonance inside the cabin and yet you get a more aggressive European sounding sports car.

Back to the headers, which we now replace with the EVO VTG header system. The longer, equal length tubes are a better match for your larger factory turbos than the stock ones which came out of the 996TT parts bin. Lag on turbo cars is your enemy and the EVO headers help reduce that lag with a factory-level-fitment.

Next is the tuning phase where we remap the car's DME unit (ECU control) with the EVOMSit Software for 93 Octane:




The next phase is to lower the car using the Tech Art PASM compatible damptronic coil over system. Not only is the ride height adjustable but you still get to keep the sport/normal button function inside the car. The handling is much improved and far more compliant.


Speaking of wheels, custom 19 inch HRE 893R series wheels were chosen along with black centers.


As with any HRE wheel, the quality/craftsmanship is second to none. Truly jewelry on wheels and with significant weight savings over the factory wheels you also get less rotational mass.


Once we removed the factory intercoolers one can clearly see the restrictive end tanks in comparison to the EVO ones that are about to be installed.


After the intercoolers are removed and housings taken apart, with some minor
modification, we are able to install the EVO intercooler kit.


Next we turn our focus to the interior and replace the factory steering wheel with a thicker and perforated sport steering wheel from Tech Art. All the factory functionality is transfered


Next we installed the 997 Sport Pedal kit.


Notice those factory silver belts? Pretty neat indeed!


As with every car that comes through here we do our best to tag it with our 10HP (not reallY) license plate frame.


After a quick test ride, the suspension settles and the wheel gap is lessened.


The car is lowered a full inch but still maintains that factory ride.


Back to the interior again. We removed the rear seats and front seats in order to install the Tequipment roll bar for track preparation.


The next phase involved installing some 996GT3 bucket seats along with Safecraft 6 point harnesses.


We also installed the SharkWerks GT3 Fire Extinguisher kit.


Back to the exterior and we installed the Tech Art Type 1 rear wing, valence and Tequipment lights.


Front the rear you can also spot the Tech Art rear tips.


There she is (code named "White Shark") in her finished form and ready for pick up. But not done for good...

A couple of years on from her original EVT700 build this car came back to us for a hardware and software update with EVOMS' latest EVT775 upgrade, including the dual-mode ECU for 91/100 octane (the switch is hidden in the ashtray). Since then she's also added a set of TechArt GT Street Side Skirts and all-black 19 inch HRE 893R wheels.

Off comes the bumper..


From the other side you can see a few suspension goodies including the TechArt coil over kit and many solid links/bushings.


And the Tubi Race Exhaust system:


The parts start to come off..



Out comes the airbox and standard throttle body:


The factory plenum vs the larger Werks1 T-pipe kit:


Werks1 Kit installed in order to accept the larger 82mm throttle body kit:


The factory inlet ducts are indeed quite skinny/restrictive and to feed the upgraded VTG turbos we installed the EVOMS Turbo inlet duct kit (driver's side shown):


And installed:


And other side:


The smaller 997TT throttle body (left) vs the larger 997GT3 throttle body (right) ready to be installed:


The stock pulley is also removed:



And the EVOMS lightweight pulley kit installed in its place:


A box of take-offs including the stock coil packs, throttle body, plenum etc... These were all replaced with EVOMS' HED Coil Pack kit and upgraded spark plugs:


James installing everything back together:


Here we are with the ECU/DME open and installing the necessary EPROMS for two fully-functioning ECUs. The EVOMSit software is then burned to each EPROM.


A switch was run to the center console ashtray for 91 or 100 octane modes:


Ready to go for a test drive:


Ready for pick up...