Here's an email I got from r-tech when asking about mods and power gains etc. Hope it's useful.
Thank you for your enquiry regarding R-Tech performance remaps for your k03s 1.8T
We can offer you full custom rolling road remap session which includes full visual health checks, ecu and pc based diagnostics and data logging plus smoke test if needed to establish if the is car is fit and health for tuning. Common issues are boost leaks, faulty valves, sensors reading wrong ect. Most of the minor common issues can be fixed on site prior to tuning.
Once we are happy your car is safe and fit for mapping we will then strap your car to our Bosch rolling road dyno to log the fuel and to get a base line power number as a starting block to work from. We will then continue to tune your car on the dyno working the power and torque up in increments logged the ecu at each step to make sure the car is safe and no under laying issues. If we run into issues then we will stop tuning and leave the power at level which we think is safe for your hardware setup. If there are major issues with the hardware we will abort the tuning session and but the car back to stock until the hardware issues are fixed. 9 times out of 10 we can fix minor hardware issues during the mapping session or we can get parts in from main dealer within 45 mins. But please make sure you have not fault or issues before booking in.
Power gain for your 1.8T 20v setup can be upto:
Stage1 Tuning 200-212 BHP 235- 245 LBFT = £250
Stage2 Tuning 225-240 BHP 250-270 LBFT = £290
For stage 2 tuning you will need:
Good quality cold air induction kit or Panel filter
Full turbo back exhaust with 100cell or de cat at least 2.5” bore+
Front mount intercooler with the boost pipes 2.5” or bigger. Not Side mount
Turbo intake pipe (TIP) Not cheap small bore ebays pipes
Forge 007p or OEM ‘N’ Revision diverter valve
N249 bypass
Decent strong actuator Pressure is key yo the higher numbers, a n actuator with 100+k on it will not make the higher stage2 numbers due to the spring getting weak, where a new oem actuator will do 250+bhp.
Cars with high miles tend to find there orininal fuel pumps cannot flow or keep up when trying to run stage 2 power, so again might be worth looking at a new oem pump.
Use 3bar fuel reg not a 4bar which kills pumps, if you want more fuel head room then fit TT/LCR 380cc injectors.
Stage2+ Tuning 250-262 BHP 290-300 LBFT = £350
Strong actuator 1bar+
water meth injector kit
injectors from audi tt or s3 bam/amk engine
For the best result stage 2 and above you will need the best flowing hardware to get the number, a lot of cheap and branded kits are not upto the job to give the best results.
INDUCTION KITS/ AIR FILTERS
For induction kit we had to design our own cold air kit as non of the kits on the market could flow decent air and stay cool, The R-Tech RAM-CAI induction kit is only £120 fitted and has proven to flow for over 650bhp.
FMICs / Intercoolers
The are many fmic options on the market which range from £90 for universal setups to £700 branded units, the price don’t mean it’s the best flowing / cooling setup for your application. The £700 kits tend to be made of best quality materials and to fit easy, the £90 kits poor quality and poor fitting, lots of chopping and cutting needed. The best proven all around fmic is the “Wellycooler” setup, this has proven to us over the past years to give the best cooling and flow at all stages of tune, we are running them at 450+bhp on car with GT turbo. The Wellycooler kit is basically a Toyo 2.5” core with ASH hoses pipes. It costs around £220 for the materials. For more information on the wellycooler setups just search google and have a quick read up.
We can provide a custom 2.5” alloy welded hard pipe custom fmic setup supplied and fitted for £470 all inc. It’s the wellycooler without all the joins.
Exhausts and decats
Again with exhaust systems there are 1000s of options, but basically sub 350bhp all you need is a decent flowing 2.5” pipe work exhaust with decent bends which don’t cause a bottle neck in flow. Milltek is the best direct bolt on option for a full turbo back system. You can find on ebay decent 3” downpipe and decat setup for around £80 which are good enough for 320bhp and an easy fit to any other cat back system.
Going 3” exhaust on a k03 is over kill and will knock on the rear beam.
DUMP VALVES
Only proven DVs to work well with the 1.8T are the Forge 007p or 008 DV with the new pistion design. But the best working DV is the new stock factory plastic DV, the 710n or 710P from an Audi TT part number from main dealers 06A 145 710 P £35
TIPS / TURBO INTAKE PIPES
Again many options around ranging from £50 to £140, the cheap ebay tips are crap full stop, the bodies on them are smaller than the stock ones, they flow really bad and make less power then the stock tips. Forge sell the upgrade tip which flow better than the stock tips upto around 240bhp these are around £140. The best flowing tip for the k03 turbos is the 70mm Supersize tips which have proven to flow over 300bhp on the K300 hybrid turbos. R-Tech do there own brand 70mm supersize tip for £110 fitted, SFS also sell them.
Exhaust manifold
If your looking for the very best from your setup you might want to port the exhaust manifold collector, this can aid flow for another 10-12bhp at the higher end of the rpm scale. If your good at DIY its going to cost you nothing, but if you pay someone your looking at around £120 labour.
We have one of the top VAG tuners in the UK; Niki Gower who is on site and carries out the entire customer remaps using the very best tuning software and tuning emulators. You can tell him how and exactly you want the power delivery, throttle maps and boost maps ect... For an extra charge during your mapping session he can add launch control, 1:1 linear throttle maps.
If you need any more information regarding tuning your car then please call the workshop direct on 01455 617233 and speak to Ben who will be happy to answer all your questions and concerns.
Regards
The R-Tech Team
