Audi A5 Forum & Audi S5 Forum banner
1 - 11 of 11 Posts

·
Registered
Joined
·
28 Posts
Discussion Starter · #1 · (Edited)
Thought it would be a good idea to write a review on various modifications I have done to my 2016 Audi S5 3.0 supercharged Stronic. The same mods apply to the S4 and the engine mods apply to any audi model with the same engine.

I bought the car completely stock and now done a few things so you can tell if it is worth doing to yours. Starting at the first mod to the last.

1. Front strut bar (strutco on ebay @ £125)

This first mod was the easiest, all you need is a flat head screwdriver to push up the 2 plastic pins holding the tray up over the brake fluid reservoir then use a socket set to take off the nuts on the black strut bar that comes standard, lay the new one on top and tighten the nuts back down. Shouldn't take more than 30 mins to fit.

Effect - this mod makes the steering feel slightly elastic when cornering hard, as if the wheel wants to straighten up out of the bend. Thus adds a slight amount of steering feel. Noticable but very minor. A reasonably cheap mod (can't believe I'm saying £125 is cheap!) so I would say it is worth it.

2. Rear sway bar (034 motorsport from ml performance @ approx £350)

Quite a challenge to fit unless you have access to a ramp, you will have to remove the back portion of the exhaust to get to it. I attempted myself and ended up taking to a garage to fit. Can take an hour to fit.

Effect - quite mediocre for the price to be honest. The car feels a bit more level when cornering, doesn't increase grip past what your tyres could handle anyway but does add a slight amount of stiffness in overall driving. Also doesn't add any more steering feel, I was quite disappointed with this mod after other people have raved about it. At the price of over £350 I can't recommend this.

3. Cold air intake (revo @ approx £350)

Reasonably easy to fit as the intake is specifically designed for the car B8 or B8.5. Should only take up to an hour to fit.

Effect - dramatic and a must buy in my opinion even over the other mods. Increases induction roar and also supercharger whine on WOT which sounds amazing. No louder than stock when cruising. I have tryed just the intake pipe which doesn't increase whine as well as drilling into the stock airbox which does but only slightly. Quite expensive at £350 so if your not bothered about supercharger whine then probably not worth it to you, anyone else it's a must buy.

stage 1 remap (APR map from prodigy motorsport @ £700)

In the UK I went with the 95 RON map as the only place that sells petrol that meets the standard for a more powerful remap (98 RON) is shell v power which is way overpriced to run all the time. My advice is if you have a B8 go directly to stage 2 as it will only cost £300 to £500 more and be a massive improvement over stage 1 for the cost.

Effect - a lot more power on WOT in all gears. The whole rev range gets more torque but at 4k rpm onwards is where you will feel the most improvement. The power change is decent but doesn't turn the car into a rocket. without an Stronic remap you will get around 400BHP. It's a must have mod but if it priced higher than £700 it wouldn't be worth it. You won't be blown away but is a big improvement if that makes sense. £700 (£1400 if including TCU remap which is needed) is very expensive, I honestly can't say that it is worth this sort of money even though it is great having quite a bit more power.

Stage 1 TCU remap (APR map from prodigy motorsport @ £700)

The Stronic remap is a must if going stage 1, not because it is so good but because the gearbox softwares torque limit needs raising so the gearbox can handle more power.

Effect - this remap is 1 step forward then 1 step back. This map will increase redline to 7k rpm allowing faster accelaration. The B8 platform had a 7k limit already but this was dropped to 6k in the face-lift B8.5 for some reason... Anyway, the gear changes are slightly quicker if the gearbox knows what you want to do. For example if flooring it to redline in 2nd the gearbox thinks you want 3rd next so it changes quicker. In manual mode it is no quicker and when the gearbox has to think of what to do it is no quicker. The biggest drawback for me is in drive the gearbox wants to go into the highest possible gear it can at all times meaning you can be doing 40mph uphill and the gearbox can choose 7th, this is even worse than the stock gearbox software. APR claim 440bhp but this is only a number and you will not feel the difference in power as it is only 40bhp higher due to the higher redline. Same as above I can barely recommend due to the price!

EBC yellow stuff front brake pads (euro car parts @ £130)

These are around double the cost of OEM grade pads. EBC do different colours for different types. On paper these are the most universal as they are designed for road use and performance use.

Effect - after 500 miles bedding these in they do increase very harsh braking clamping force but not much more than OEM, I find them unpredictable as they are all or nothing and make slow stops trickier. The OEM grade I had before stopped when really pushing nearly as good as these and also had good pedal feel braking at any speed, the EBC ones do not. To say these are double the price of OEM grade they are not worth it at all.

Transmission mount insert (ebay @ £16)

This mod on paper is supposed to tighten up any play/movement in the gearbox, especially under high torque and acceleration making shifts smoother and less clunky. Just 2 bolts off and 2 bolts in, it is that easy. You will need to Jack up the car on axle stands to get at it. Shouldn't take more than 30 minutes in total.

Effect - nothing, genuinely I have found no change. Drove softly and hard, at low speeds at fast speeds. In sport and even manual and I honestly can't see any difference. All I can think is if you have a high mileage example the OEM mount will have play and wobble due to wear and tear which is when it may benefit, I would only do this mod if you have a sloppy gearbox and a first "diagnosis" mod to see if it helps seeing as though it's only £16.

What mods have you done? Did it make a difference? Worth the cost? Comment below
 

·
Registered
Joined
·
1,688 Posts
If you have a B8.5 with the crec engine stage 1 is really the only option due to having a supercharger clutch which can have issues with more boost created when going stage 2.
Stage 2 CREC for 4 years now. No clutch problems.
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #3 · (Edited)
I have heard issues from various threads about the clutch being an issue, I will delete that from this thread as its conflicting. Did you ever go stage 1? If so how big a difference is 1 to 2? Drive or crank pulleys? Or both? What extra supporting mods have you had to do?
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #4 ·
Stage 2 CREC for 4 years now. No clutch problems.
I have heard issues from various threads about the clutch being an issue, I will delete that from this thread as its conflicting. Did you ever go stage 1? If so how big a difference is 1 to 2? Drive or crank pulleys? Or both? What extra supporting mods have you had to do?
 

·
Registered
Audi S5 Black Edition Mrc Stage 2
Joined
·
451 Posts
When you go from stock to Stage 1 it is a massive improvement.
When you go from stage 1 to stage 2 via the crank pulley + other supporting mods the power increases 30 - 50 hp depending on your mapper,however it is the torque where you see the real increase in performance.
 

·
Registered
Joined
·
1,688 Posts
I have heard issues from various threads about the clutch being an issue, I will delete that from this thread as its conflicting. Did you ever go stage 1? If so how big a difference is 1 to 2? Drive or crank pulleys? Or both? What extra supporting mods have you had to do?
When the CREC engine was introduced there were a few reports of clutch problems in the US where that engine was used in some models (A6, A7 and Q5 I believe). Certainly Audi revised the part (although mine is not the latest). I am aware of a case at MRC where the clutch failed on a stage 2 car. However I believe (I cannot confirm) that said car had a problem with the whole supercharger which had to be replaced. I was in contact with the owner of the S5 which was used as a test-bed for when APR tested their CREC tunes in the UK. IIRC the clutch had to be replaced twice. However they were also testing their ultracharger and race fuel so for sure those clutches had been stressed. So not surprisingly there was a lot of subsequent discussion about the clutch on forums and certainly I was worried for a while. I even have supercharger revs as one of the gauges on my FIS-Control MMI so that I can see what is happening. But 4 years later nothing has gone wrong so my worries have pretty much gone. One thing I did learn is that in ADS dynamic the clutch is permanently closed. So although I usually always switch to dynamic when I'm having fun, I tend to take it easier in the other modes just to ensure that I minimise any shock to the clutch as it opens and closes.

I went straight from stock to MRC stage 2 (189mm iabed vdamper on crank) so I really can't compare to stage 1. FYI my car peaked at about 480PS and 585Nm on MRC's previous dyno.
 

·
Registered
Audi S5 Black Edition Mrc Stage 2
Joined
·
451 Posts
This is a lot of money for an off the shelf map.
There are lots of reputable companies out there now that can do a custom map for half that price.
That is nearly the price of a stage 2 remap with the gearbox map included.
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #9 ·
This is a lot of money for an off the shelf map.
There are lots of reputable companies out there now that can do a custom map for half that price.
I know, I paid £300 for my previous audi a5 2.0 tdi to be mapped which was a custom map which I started to get issues with. So I wanted a highly reviewed off the shelf map this time. I had tied it down to revo or Apr as where I live it was really the only companies I could choose from. I went Apr even though it is overpriced because it was the most reviewed map out there and no issues reported.
 

·
Registered
Joined
·
28 Posts
Discussion Starter · #10 ·
When the CREC engine was introduced there were a few reports of clutch problems in the US where that engine was used in some models (A6, A7 and Q5 I believe). Certainly Audi revised the part (although mine is not the latest). I am aware of a case at MRC where the clutch failed on a stage 2 car. However I believe (I cannot confirm) that said car had a problem with the whole supercharger which had to be replaced. I was in contact with the owner of the S5 which was used as a test-bed for when APR tested their CREC tunes in the UK. IIRC the clutch had to be replaced twice. However they were also testing their ultracharger and race fuel so for sure those clutches had been stressed. So not surprisingly there was a lot of subsequent discussion about the clutch on forums and certainly I was worried for a while. I even have supercharger revs as one of the gauges on my FIS-Control MMI so that I can see what is happening. But 4 years later nothing has gone wrong so my worries have pretty much gone. One thing I did learn is that in ADS dynamic the clutch is permanently closed. So although I usually always switch to dynamic when I'm having fun, I tend to take it easier in the other modes just to ensure that I minimise any shock to the clutch as it opens and closes.

I went straight from stock to MRC stage 2 (189mm iabed vdamper on crank) so I really can't compare to stage 1. FYI my car peaked at about 480PS and 585Nm on MRC's previous dyno.
Thanks for the info I had no idea that ads dynamic permanently shuts the clutch! Shame mine didn't come with drive select (currently trying to work out how to activate in vag com...also need to get vag com haha) wonder if sport mode closes the clutch? It feels like it does.
 

·
Registered
Joined
·
1,688 Posts
Thanks for the info I had no idea that ads dynamic permanently shuts the clutch! Shame mine didn't come with drive select (currently trying to work out how to activate in vag com...also need to get vag com haha) wonder if sport mode closes the clutch? It feels like it does.
I did check that a while ago but sorry I can't remember the result. I hardly use my S5 at the moment but next time I do I'll try to remember to check.
 
1 - 11 of 11 Posts
Top