Superchargers

[PetrolDave]

OK so a SC is not to your liking that is crystal clear. Others though will be truly interested. Now unless you can make a tangilble contribution to this debate why not leave this thread to those who are interested/curious.

You sound like Rajendra Pachauri (head of the IPCC).

Debate is about all the differing points of view being aired and discussed in a dignified and civilised way - and an agreed position being reached (even if that is agreement to disagree).

Debate is NOT about only one viewpoint being presented.

My position on superchargers? I'd love one, but only if the price is sensible and the impact on the reliability of my RS4 is minor (some impact is inevitable since the engine, powertrain, brakes, chassis, suspension,... will all be placed under greater stress and/or load).

[stoddie]

Only if installed incorrectly

then theres all the hasstle of trying to sell it when you get fed up of it, or fed up of all the problems - very few people want a car that has been modified beyond an air filter.

OK so a SC is not to your liking that is crystal clear. Others though will be truly interested. Now unless you can make a tangilble contribution to this debate why not leave this thread to those who are interested/curious.

man up mate!

jesus this place makes me laugh sometimes.......

[xyber]

my 2p's worth on this.

but once you start splicing into wires/connections you open a whole can of worms for yourself and make a perfectly (normally) reliable car into something that spends more time on a flat bed than on the road.

Only if installed incorrectly

then theres all the hasstle of trying to sell it when you get fed up of it, or fed up of all the problems - very few people want a car that has been modified beyond an air filter.

Most of my cars have been heavily modded and have sold easily. One was driven away for full asking price 16 hours after advertising it on Pistonheads. My last one went for asking price in under a week, a heavily modded, supercharged VR6.

If done right modded cars are just as reliable, it's when clueless goons with a Halfords toolkit start dicking around with stuff that thing go wrong

[stoddie]

fair do's mate - ive also had modded honda's and mazda's and have had to return them back to standard before i got any interest on a sale. For me when i purchased my RS4 i wanted a pure standard example and bypassed anything that even had a remap.

going by the thread on audizine, the supercharger in question had a ruptured intercooler pipe resulting in the guy having to source a new engine. The initial install pics posted up a few pages into the thread looks okay and as far as i can make out this was fitted by a reasonably decent tuner with plenty of followers - correct me if im wrong. Yeah id love my car to be the quickest on the block, but id rather sell the rs4 and buy a 360 f1 with the money from the sale and the money indended for a 12k supercharger conversion. maybe im getting too old

[North_Wind]

I think it partly depends on the car. My RS4 ownership has been only brief but I wasn't interested in a modded version because of the complexity of the engine and my perception that you have to choose between relying on Audi to fix problems under warranty (but the warranty is void if you mod) or have deep pockets to cover problems yourself. Also, all the insurers who gave me half way reasonable quotes wouldn't touch modded versions, even something as simple as a Milltek.

Conversely with a Lotus, I was extremely relaxed about mods because it is a much simpler car, far wider options for repair, the dealers take a much more relaxed view covering repairs even if the car is modded, and the insurers seem much more accommodating as well.

BA

[ArthurPE]

I was reading about the MTM one in Audi Driver from Feb 09 I think, 540 PS!
The chap had it done to a Sprint Blue Saloon, be interesting to know how reliable that's been.

I suspect installation is everything with those PES kits and if anyone can do it right it'll be MRC so dyno data will be interesting.

I agree, tuning is the key...
I'll be curious to see some times...
the PES kits in the States got the dyno numbers, but when run in the 1/4 were barely better than stock...did not jive with the dyno numbers...

the RS4 is imo a tricky engine to supercharge, with it's 12.5:1 Cr and complex cam control...although the DI should suit it well...

I've attached the spreadsheet I made to compare the 2 sc's, M90 vs TVS
also is the one I made to determine the RS4's ~Vol eff

[S2tuner]

Arthur, what kind of times would you expect from 3 to 8k on this? Just checking to see if what we actually have matches with your calcs, which seem correct by all means

[ArthurPE]

Arthur, what kind of times would you expect from 3 to 8k on this? Just checking to see if what we actually have matches with your calcs, which seem correct by all means

I would expect <7 sec, give or take, with avg amb conditions
maybe as low as 6.5

everybody focus's on peak HP (I'm sure you know better ), but the real oomph is the mid range torque boost...

[Doug_S2]

That is good then - you will be impressed

[lengster1]

Dare i ask about price Doug?

[Doug_S2]

Half the cost of other kits

[lengster1]

Im interested could you pm or email perfomance findings so far and estimates on prices please

[larshs]

Had my MTM S/C for more than 20.000 KM now and with no problems. Had a small issue (one pulley bracket should be removed during installation but was not) and MTM sent a mechanic from Germany to Norway within days. You get what you pay for. I really enjoy the kit.

How is your drive train....
Have you replaced flywheel / clutch yet...

Yes, I have replaced flywheel, clutch and exhaust. All MTM stuff - still no engine problems after 30.000 km.

[sakimano]

This is the first pes kit we have fitted. I am not going to post results until we are finished but it has around 30 hours dyno testing on it so far - We can see why other builds have not made good times so as well as dyno results we will do some timed runs to show the gains you can get if we tune the car.

so...this was posted over a month ago. Any results?

the owner of the car said MRC had a vbox (a month ago) and were doing timed test runs 'tomorrow'. Can you share any of that data?

I've been one of the people calling for these supercharger companies (and their OFFICIAL distributors) to stop plying the public with dyno distractions and show some real results. Why is it so hard?

Very disappointing. We're not talking about a Honda Civic from the early 90s...we're talking about $20,000+ kits on $70,000+ cars here. We the consumer deserve more than empty promises and corrected dyno results that are mysteriously converted back to crank with phantom DT loss numbers.

I was banned on A5oc.com for questioning PES and their kits...for demanding more. PES' solution to shut my requests for proof up were to become an official advertiser and have my account banned.

Is PES an advertiser here? Didn't think so. We'll see if someone...ANYONE can cough up a proper performance test. It's not much to ask.

My friend owns an E92 M3 and mentioned he's thinking about a supercharger. I asked him what he was thinking of, and if they have substantiated their claims with performance. His reply was simple...

http://www.youtube.com/watch?v=VxSCyt3E3IY
http://www.youtube.com/watch?v=lVOgW0lh0Co

STEP UP PES/VF/MTM

[ArthurPE]

this guy is a shill for other tuners, probably one of the worse around, JHM, at least no better than the ones he's mentioned
he's got a 2nd grade redneck mentality, 1/4 mile is all that matters, lol
he is advertising other products disingenuously
and he has no idea of what he speaks
he goes from board to board doing this

in fact he banned me on another for saying Audi's position was deposits are NOT an issue, when he and his cronies posted libelous lies saying Audi acknowledged the issue in writing to them... all lies
guess he missed this:

Thank you for your enquiry regarding the carbon build up in the Audi RS4. Please accept my apologies for the delay in getting back to you. No discourtesy was intended. As you will be aware your concerns were passed onto our Head of Customer Services, Richard Starkey.

Richard has now had the opportunity to discuss your concerns with Audi AG on a recent visit.

Unfortunately, Audi Germany does not recognise carbon build up as an issue, as they do not see any potential performance or mechanical problems arising from this. They have advised carbon is a bi-product of burning fossil fuel which is a natural occurrence on all petrol engines. Therefore Audi AG has ruled out any fixed support towards the cleaning of the RS4 Engines to remove any carbon build up.

They have further advised that it is for Audi UK to investigate this on a case by case basis and therefore any support is assessed individually.
I appreciate that this may not have been the response that you were hoping for, but trust I have clarified our position.


his response should be amusing (by amusing I mean personally attacking, spiteful, false, irrelevent and pointless)