S7 tuning questions

[S5_Steve]

Well, my s5 got stolen (thanks Portland) so i’m entertaining the idea of upgrading to an s7. I think a stage 2 tune is probably more than enough power, but for curiosity sake, whats the deal with replacing the turbos with rs7 ones? I expected the hp and torque figures to be much higher than stage 2. APR's stage 3 91 octane chart shows a 25 HP gain but with LESS torque?? It goes from 670 FT-LBS down to 617. Is this really just a trade-off between torque and HP, is APR smoking crack, or whats going on here? ha. I see Integrated Engineering (I loved my s5's IE dual pulley tune) doesn't offer turbo tunes. Shame. If swapping turbos really does suck out the torque then I might go with IE so that I don't have to pay someone to swap out the car's computers.

My buddy wants to sell me his 2016 with 77k miles for reference. Would I be shooting myself in the foot with buying and tuning an s7 at 77k? My local shop said the 4.0T platform isnt quite as reliable as the 3.0T and maintenance is a bit pricier. Seems fair but I was wondering what you guys have seen after tuning them. I read somewhere that it's easy to blow out the rear axle launching these cars (I think they mentioned launching a stage 2 at 3500k / peak torque) but i'm not sure what else to look out for. He hasn't done a carbon clean yet so that will be on my maintenance list.

What do you guys think?


edit: I got my wires crossed because IE doesnt offer a stage 3 tune. edited for accuracy.

[Alabama]

I think a stage 2 tune is probably more than enough power, but for curiosity sake, whats the deal with replacing the turbos with rs7 ones? I expected the hp and torque figures to be much higher than stage 2. APR's stage 3 91 octane chart shows a 25 HP gain but with LESS torque?? It goes from 670 FT-LBS down to 617.

Notice the APR Stage 2 is "discontinued". Prior to EPA enforcement, Stage 1 meant tune only, Stage 2 meant replacing the downpipes plus tune, and Stage 3 meant replacing the turbos plus downpipes plus tune. Most vendors no longer sell a tune for the old Stage 2. Nowadays Stage 2 means replacing airbox plus tune and Stage 3 means replacing the turbos plus airbox plus tune. I'm not sure if that explains the torque difference you observe.

[ANMS4]

UM look into DS1 by far the best option IMO. They have a FB group that is amazing

[M610]

I have a 2013 S7. I bought it with 74k miles on it. I went DS1 Stage 4 but after the initial investment I have only had a single issue with a oxygen sensor. I daily mine and have 91k on it now. You probably already know this but your turbos should be covered to 100k miles by Audi but I would still get them looked at unless your buddy replaced them already


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[jrubio96]

Purchased my 2015 S7 at 53k miles, coming up on 74k miles now. I just did a big maintenance overhaul for 75k service, entire new front suspension (Sidem has a great kit on urotuning for only $580), motor mounts (did the window weld, it does vibrate a bit but it's whatever) spark plugs, dsg service, and oil change. So if you get the car, you may have to do the same. I am IE tuned, been tuned all 20k miles of ownership. I've had some hiccups here and there, but nothing too bad.

[base14]

Sorry to hear your s5 was stolen.. Curious on how it happened? Did they get access to a key or was it a so-called relay attack?


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[Rjpacman]

I’m in Portland area too so not surprised your S5 was stolen, but still sucks man. Curious which shop told you 4.0t is not as reliable?