Author Topic: Agu k03s need advice  (Read 1667 times)

Offline RnP

  • Here all the time
  • ****
  • Posts: 432
  • Audi S4 gone, looking for b5 rs4
Agu k03s need advice
« on: 18 January 2016, 21:41 »
Hi all haven't posted in a while but now I'm back car is currently at a garage having the following done :
G60 vr6 clutch combo
R-tech TIP
R-tech intake
K03s
Now the problem is a few years ago I had a powerflow turbo back system installed, the downpipe is 2.1/4" the rest of the system is 2.5". They managed to weld the stock cat to the stainless dp which was fine with me up until now.

My question is will the dp be sufficient for when I have the car mapped? Will the dp be too restrictive? Can I at a later date weld into a decat an eBay sports cat 200cpsi will it pass an MOT?

Sorry for going on a bit.


Offline Dalo Harkin

  • I live here
  • *****
  • Posts: 2,070
Re: Agu k03s need advice
« Reply #1 on: 19 January 2016, 08:58 »
Mine has a 200 cell sports cat and passes an MOT fine, a 2 and 1/4 DP will be a little restrictive if you are planning to go to a stage 2 K03s then I'd look at getting a 3" DP for best performance (you can pick them up pretty cheap)
ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline Wazzzer

  • Moderator
  • 10k hero
  • *****
  • Posts: 11,175
  • Golf GTI 1.8T AGU
Re: Agu k03s need advice
« Reply #2 on: 19 January 2016, 12:32 »
Way too restrictive... As above get yourself a 3" DP for around £80 and go from there


1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline RnP

  • Here all the time
  • ****
  • Posts: 432
  • Audi S4 gone, looking for b5 rs4
Re: Agu k03s need advice
« Reply #3 on: 19 January 2016, 13:52 »
3"DP ordered should be with me Thursday then time to book remap :drool:

Cheers for your help lads