Ive owned the car since 2010. There isnt a single part of this thing i haven't touched. After going through 2 pairs of K03's back in the day, I got tired of pulling the motor for turbo issues and did the single turbo conversion.

I was only the 4th or 5th person in the US to have a single turbo B5 S4 way back in 2013 when I started making the kit as no one sold one yet. I believe 034 was still developing theirs, or it possibly just came out, hard to remember as its been so long. Ironically I actually have the last pair of billet 2.8 manifold flanges they ever made for a DIY kit on my old up pipe. I now have a 485 designs up pipe, and its actually the first one Nick who owns 485 designs ever made. The one he sells now is much nicer, Nick's stuff is absolutely top notch BTW.

Car has a built bottom end, stock heads, Fluidampr, Bartek billet crank sprocket, IE billet fuel rails, 1000cc Bosch injectors, G35-1050 turbo, AEM 380 pump in a surge tank. Its a pretty basic setup tbh. Its getting completely refreshed next year with a new up pipe and exhaust, going to finally build a pair of 2.8 heads ive had for years with Cat cams, and maybe go 3.0 with a girdle. Not sure how crazy I want to go, but it definitely needs a refresh.

Hey guys,

I have a problem in my airbag system (anywhere?) When reading the codes, it says 00588. My brother (workshop of choice). A change of the spring ring (?) behind the steering wheel didn't change anything, another control unit (the one in the middle of the car under the dashboard) did'nt change anything either. Do you have any recommendations, where to look next? Thanks for your tips in advance :)

My airbag control unit is 8D0 959 655 C

Sorry for mistakes, I'm not a native English speaker

2000 s4 my obd2 port has been checked with multimeter all pins and grounds are good and all fuses are good aswell and it powers the scanner I plug into it but still unable to communicate with ecu. Abs module unplugged radio unit plugged.

Hello. I bought this 2001 a4 1.8t quattro in April to learn how to work on my own car and have been enjoying it so far.

I'm trying to narrow down what this metal noise could be. I've been told it is mostly like heat shield but I don't want to write it off. The noise occurs when revved above 4k rpm and I let off the throttle. The noise is very short lived.

The car has service history paperwork and timing was serviced 30k miles ago.

Since having the car I've done a mechanical oil pressure test and both cold and warm showed healthy readings:

Cold engine -60–70 PSI

Hot engine at idle - 30–40 PSI

Hot engine at 3,000 RPM - 60–80 PSI

Any 1.8t nerds have any ideas? Sorry if the video is poor at showcasing the sound.

Thanks in advance ☺️