R-Tech's stage 2 requires a bigger cooler.
The map you'll get is their Stage 1.5 which is your CAI and decat. My Eddy with an R-Tech stage 1.5 map and a BCS Powervalve Sports cat TBE and REVO CAI made 331bhp 337ft lb. would have been more but the OEM clutch was shot so it was bought back a touch, think it was 340bhp+ before that.
Add a cooler for their stage 2 and a HPFP and a RS4 FPRV for Stage 2+.
My Custom Linear R-Tech Stage 1.5 map....
Loving that boost control flat to the red line.
Another "new" thing this map is running is my new LBK map, LBK is the Bosch German short term for manifold flap, the stock Ko4 LBK and VVT mapping IMO is setup to produce air velocity to speed up and get on boost as quick it possible, the side effect to this is when the engine setup is flowing better from an induction kit and elevated boost requests the turbo surges and flutters most of you wil induction kits and a ko4 have this issue. What I have found is to allow the head to reduce the air speed velocity at 3000rpm and set the LBK and VVT to allow more air flow volume into the cylinders which in most cases fully removes the surge flutter sound / or Just gives a slight wisper of flutter at 3700rpm. The other "up" side is more torque can be made between 3000rpm-4500rpm with a lot less boost. On the k1 we developed the LBK-VVT mapping on made more torque at 1.3bar then it did at 1.6bar..
Next setup is to find a new ignition advance setup to work better with this setup to see if there is even more power to have.
We can offer this LBK-VVT upgrade to all r-tech customers who are running an induction kit with a ko4 and experiencing the flutter. All you pay is £70 for 2 hours dyno time to set it up to your car.
Other tuners offer maps to reduce the flutter but at a compromise to the torque output by lowering the boost