Is Stage 2 Reliable on B9/B9.5 Audi S4/S5/SQ5? | 034Motorsport FAQ

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[@SS-ye6tz]

I'm flashed on stage 2 from 31k miles to 94k miles, never had any issues apart from the normal suspension things, ball joint, brakes etc. Engine has been rock solid, did have the check valve but as mentioned common

[@coreysteinman]

You mind sharing your build? I’m looking into upgrading my 2020 s4 with the stage 2 tune

[@cadensproul6091]

Stage 2 as well kinda trips me out how it takes off the cold start same with you guys?

[@SS-ye6tz]

@@coreysteinman going to get some hate for some of the parts haha but to be honest they work without issue and work as intended, cts sports cat, cheap turbo inlet with a proram air filter, rev9 intercooler (anything is better than stock) and more recently the 034 lowering springs, can't stress enough handling/tires should be done before anything else

[@SS-ye6tz]

I have a question for 034 or whoever can answer it, regarding the water pump is there a specific amount of mileage it should be changed at?? Or only if it starts leaking? A lot of garages in the area won't replace it till its leaking and audi uk say its lifetime and should only be replace when it's leaking

[@Ron_5219]

I just got my 1st Audi (2.0t B8.5) and had an inspection done on it. The shop was transparent with me and stated it was leaking a little and best to change it now. I can confirm the leak prior to inspection so I know it wasn't marketing BS. So to answer your question, my motor was at 84k at that point and as far as the Audi techs... they told me it's very popular for them to start showing failures around 70k - 90k. If you're interested in being proactive, I would recommend it within the window they told me.

[@034MotorsportUncut]

The water pump only needs to be replaced when it has failed.

[@jlc2370]

@@034MotorsportUncut how could you tell the PCV or water pump is failing? I’m new to the platform and have a 2018 s4 prestige looking to know more about