It has actually got a motor mover on it already. Really useful when you get to a site and you don't have to embarrass yourself trying to reverse the outfit.
Hi Alex nice car, If you are looking for a Hybrid then Fin Turbo are in your part of the world. They do a very good one that has been used by quite a few people in there A4 / A5.Amazing thread, I've been following this for some time but just become a member. Great car and an amazing job you've done! A true inspiration!
I also drive a A4 3.0 tdi Quattro Avant, only mods is a Superchips bluefin (295ps). But it does quite well, 70-130 (km/h) in 5,2s on third gear.
Thanks, I had not heard about them before, looks like a realy nice site.Hi Alex nice car, If you are looking for a Hybrid then Fin Turbo are in your part of the world. They do a very good one that has been used by quite a few people in there A4 / A5.
http://www.fin-turbo.fi/turboahtimet/upgrade-turboahtimet-tdi.html
That smoke you see is when it's spooling, lambda is set quite rich there, around 0.9. That's the price of spooling up a big turbo
The power dip isn't really a dip, it just stops climbing so steeply as peak torque drops off. The engine then seems to be able to hold on to the lower torque we are requesting and so power climbs more steeply again. One of the challenges here is for torque not to get out of control, so a lot of work is spent trying to profile the torque curve, against what the engine and turbo naturally wants to do. I think we could do more but we have to remember this is Karl's daily that he tows a caravan with. Mrs Desertstorm would not be too happy with a broken clutch plate, parked up in your local seaside village lay by complete with an ABI Marauder in tow!
Rick
With regards to the bitdi maf is it necessary for when upgrading the turbo?
Fitted the discs and new calipers on the front of the car over the weekend. Good timing in response to the power hike. They feel a lot better than the previous setup and the pads haven't even bedded in yet.
This is what the TTRS wheel well vents and the Porsche Macan scoops look like.
I cut down the brake back shields to similar size to what is used on the Porsche Macan. These basically are just there the provide direct radiated heat protection for the ABS sensor and the rubber boots on the suspension ball joints.
No point in making mods to get more air into the wheel well without removing barriers for the air to get to the disc.
There is a good weight saving as well with this mod. The old caliper and pads was 8Kg the old disc 10.6Kg so a total of 18.6Kg . The new caliper with pads was 5.2Kg and the new disc 8.4Kg a total of 13.6Kg.
So that's a reduction of 5 Kg unsprung weight on each wheel.
They are the Q5 Brembo calipers I got them through the parts ordering system on here from Mike. Stafford Audi wanted £428 for one caliper Mike did the pair delivered for £528.Karl nice mods - are these the same caliper's from the Q5's running 345mm discs?
had the same issue on mine but I added more tighter smokelimiter they seem to burn smokefree around lambda 1.
Maybe the torq limiter can smooth out power curve
Hi do you have the part numbers for the macan air scoops and clips.I will be fitting the q5 calipers to my s4 soon.thanks AndyGoing for a bit of a brake upgrade in the car as hopefully it will be remapped in the next few weeks with the hybrid on. I want to do a few track day this year but don't want to go too mad with big brakes that mean big wheels. Part of the problem with the S4 brakes on the car at the moment is they are a sliding caliper brake so just one piston and the pad stops very close to the disc slightly dragging which doesn't help.
All performance cars usually have multi pot brakes as these have many advantages.
Thus looking around I saw that several people have fitted Audi Q5 brakes to their A4's and A5's . These are a 4 pot Brembo brake caliper that uses a 345mm * 30mm disc the same size as the S4.Here's a picture of a test fit of the calipers with the standard 17 inch wheels I use with winter tyres.
A few mm clearance but they do fit. I think they need something like a 3mm spacer just to give a little more clearance on the spokes
The pads in the caliper are the same size as used in the Subaru STI and EVO 2008-2015 so the choice of pad materials is immense, almost every compound from every manufacturer is available to fit these.
Bought a set of Redstuff for normal road use, yet to decide what to use for the track.
The big problem with the standard set up even if I fitted RS4 brakes is the lack of cooling, there really must be very little air getting to the brakes . So to address this issue and give them a fighting chance again after doing some surfing found some solutions to this I hope.
Porsche Macan Turbo brake ducts.
This is what the look like on the Macan, which is based on the Q5 which is based on the same platform as the A4/ A5. The Macan has 20-21 inch wheels and big brakes, you can see the brake ducts clip onto the steering rack arms by the track rod end. On the A4 they need a little shortening on the one end by about 1cm as otherwise they foul the ARB but apart from that they fit fine.
Notice the almost non existent brake backing plate, this is standard so I will be chopping the thin bit of ally thats on the A4 to match this. It just basically provides screening from direct radiated heat for the ABS sensor and track rod end. But allows a lot of air flow to the centre of disc and the face.
Cheap way of getting Porche bits on the car too as 2 ducts and 2 clips were £14 from my local Porsche dealer. Had a mooch at the cars as well whilst I was there, very nice.
Now just need to get some air in the wheel well. Bought some Audi TTRS wheel well air vents. I have fitted one side nearly just needs some trimming and it looks quite good, almost OE.
It has a NACA duct that feeds air through a vent like the RS4 / RS5 but also has quite a large wheel well grating that allows air in. I intend to buy some cheap fog light covers from Fleabay and mod them so this will allow a lot of air to find it's way to the wheel well on a track day.This is a picture from this thread where I saw this done.
http://www.audizine.com/forum/showt...is-Challenge-Spec-ongoing-build-thread/page11
He used Phaeton back plates and scoops. A more expensive solution.
You could use any 345 * 30 mm disc but decided to go for the ECS 2 part disc. Expensive but hopefully they will do the job. These have directional vanes which RS4/5 brakes don't have . Not too many drilled holes. As long as they don't get too hot cracks shouldn't be an issue.
http://www.awesomegti.com/brand/ecs-tuning/ecs-front-2-piece-brake-discs-audi-s5-b8
The weight saving with the discs and much lighter caliper is quite surprising, The discs are 7.5 Lb lighter and the caliper is about half the weight as it's alumimium as opposed to the predominantly cast iron standard item. this all adds up to a much reduced unsprung weight.
I painted my calipers with smooth black hammerite with some white Brembo stickers.
The Q5 uses the TRW 345mm caliper in some models and the Brembo in more potent versions. They use the same master cylinder in both and the same as the A4, so another reason for sticking to this kind of solution. An RS4 uses a different Master cylinder probably to cope with 8 pots on a caliper.
I think i have some simular tubing in my garage,i will check the dimentions tomorrow,if its the same i should have enough to knock 2 up,one for me and another for a mates s5 if its the same.I also have access to a machine shop if need be.Small tweak with the suspension today. I was always quite amazed at the improvement the Top strut bar made to the handling on the Passat. Much more positive and less corrections when in the middle of a corner, just felt so much tighter.
The Audi has a similar bar connecting the tops of the struts but it is a fairly flexible affair and you can easily twist it by hand. It's just an L section made from thinnish pressed steel.
Looking at other B8 forum posts I spotted a link to a product they have in America the CR-15 upper strut brace.
http://www.audizine.com/forum/showthread.php/658976-CR-15-Upper-Strut-Tower-Brace-Realtime-Install
http://www.audizine.com/forum/showt...-chassis-flex-and-is-there-really-any-benefit
Everybody that has fitted it appears to think it's good to very good and has a noticeable effect on handling.
Looking at some pictures of it I thought I could probably make one as basically it's only a piece of 25mm 10swg aluminium tube with various holes and cutouts.
Ordered the tube from Fleabay quite reasonable £9.95 for 1m 25mm square 10 swg (3.25mm) wall thickness .
Don't get 16swg it's too thin.
http://www.ebay.co.uk/itm/270954529113?
By removing the existing brace which is very easy you can use it as a pattern.
There are tabs sticking up at each end that are used to secure covers on each side. In America they have a different arrangement and use different covers. They do however mill a small slot in the bottom of the bar to accomodate the tabs. As I won't be using these I just bent them flat, easy to do with a bench vice as the steel is thin.
You need to file some clearance for the back of the master cylinder, just a few mm. Also for the part where the battery distribution box mounting plate is.
And 2 holes that line up with the bolts that secure the aluminium plenum heatshield.
You can use the existing holes on the Brace as a pattern.
You need to file some flats on the 3 existing nuts if you want to use them as they are to wide otherwise to fit in the tube. You will need another 8mm nut and some washers as well.
Took me about 90 minutes measuring, drilling and filing.
And the result is pretty much as people who have fitted it to there car have said.
Front end feels more positive, you don't seem to have to make corrections mid corner as much and also I have noticed there is less creaking from the car.
When I go onto my drive across the dropped kerb it always used to groan a little as I cross it at an angle. It now doesn't groan at all.
I already have uprated springs shockers and roll bars and I can feel the difference. On a standard car I suspect it would be more pronounced.
Karl.
Yours looks quite a bit longer than the original but it seems to fit OK. Got to work better than the original as the pipe transition is much smoother and the convoluted section isn't as restrictive. Going by back to back data logging I did it seemed to be flow more air. On a standard car maybe not worth much but if it's mapped or you get to a bigger turbo the standard intake is something that would probably be an issue.
The main restriction on the intake tract is the turbo damper, smoothing out the intake has worked well on my car, I could feel the difference
You really need to look at the rest of the intake. @TimberVD
Hi do you have the part numbers for the macan air scoops and clips.I will be fitting the q5 calipers to my s4 soon.thanks Andy
The exhaust on the latest power run was using pretty much the standard system. The DPF/ cat is gutted and the rear boxes have been tweaked to make them straight through.Agreed it looks much smoother. It's remapped at the moment by Bluefin (previous owner), but look to get it mapped properly in the near future. I've taken it out for a spin and there does seem to be a small change, I hope it isn't just all in my mind.
Just a question, is your latest power run with the standard exhaust? Did you change anything to it, like gutting it and installing a straight pipe inside? @desertstorm
Thanks.The part numbers for the Macan scoops are
95B.615.447.B Air baffle plate
95B.615.448.B Air baffle plate
95B.699.011.B Clamp
The scoops are handed hence the two different part numbers, the clamp is the same part number for each side.
They came to £14 when I bought them and that included £2 p+p to have them delivered.
The exhaust on the latest power run was using pretty much the standard system. The DPF/ cat is gutted and the rear boxes have been tweaked to make them straight through.
Click on this link to go straight to the exhaust mod page Karls 3.0 TDI build thread
I have a valve on the exhaust that can be opened to produce more noise but this doesn't seem to make any difference to the power produced.
Basically the standard exhaust isn't that bad, with all the restriction being in the turbine /VNT on the turbo . I believe Bobby Singhs car running 440 bhp is running the standard exhaust with just a straight through downpipe to mate to the S200 turbo he is running.
I looked at the Bi-TDI intercooler and as you say it's a really good fit for an upgrade. The only ones I could find when I was looking were from some of the more dodgy European Ebay equivalent sites.It has cast end tanks and should look OE.