RS6 Turbo FAQ

[B528QM]

Well after all the child play in the other RS6 turbo thread no questions really got answered, all though it is the current understanding that there is no current map available but until then we can have some guidance on getting these turbos going. Here are some questions that I believe need to be answered, were not going to make this a how much does it cost, or how much power will this be thread... just an evaluation of parts and other modifications for a decent set up. Lets discuss and I can update the thread as neccesary. So here it goes...

If running a stock K03 setup then what manifolds and piping shall be used?

Do modifications need to be made to the turbo?

Are any internal modifications recommended for a "reliable" build, if so, which ones?

And then finally what injectors, fueling set up should be used?


I know this isnt everything but atleast this will give us a good idea of what we are looking at. If someone has any suggestions to add feel free to post, I can add info and we can make this work, I will also try to research and contribute myself.

[10SecS4]

1) Stock S4 exhaust manifolds and RS4 K04 inlet piping.

2) Yes, although it's nothing too extensive.

3) This depends on how much power you plan on making. Answering this question is prohibited by your "were not going to make this a how much does it cost, or how much power will this be thread..." statement.

4) This depends on how much power you plan on making. Answering this question is prohibited by your "were not going to make this a how much does it cost, or how much power will this be thread..." statement.

[generationjdm]

Not sure what you mean about running ko3 setup, but hopefully this helps..Stock manifolds can be used with ko4 piping but you will have to modify the turbo nozzle.
I hear there is some cutting on the car involved.. You will get different hp numbers depending on who you ask and on what dyno.. 500whp i believe was achieved by tq factory but at like 30lbs race gas, I could be wrong but thats what I herd or read somewhere on this site... Fueling is in the works or complete by jeff moss but I herd/read the kit will be over 3300.00.. I personally think it's a big waste of money to run rs6ss turbos 3k ,fueling 3300.00 piping 525.00 install kit 90.00 thats 7k and you still didn't buy dps another 1500.00 thats 8500.00... l think people would be better off getting a gt kit for the price of the stuff named above and you wont have to modify or cut your car up and you will have way better turbos with the same power at 20lbs on pump gas as you would at 30lbs on race gas with the rs6ss... People should have an idea on the prices just my 2 cents... I wrote this at the same time as marc so i didn't read what he wrote prior to me posting this, so I'm not trying to tear this thread up so, it wont be me debating marc

[NYCVR6]

l think people would be better off getting a gt kit for the price of the stuff named above and you wont have to modify or cut your car up and you will have way better turbos with the same power at 20lbs on pump gas as you would at 30lbs on race gas with the rs6ss... People should have an idea on the prices just my 2 cents... I wrote this at the same time as marc so i didn't read what he wrote prior to me posting this, so I'm not trying to tear this thread up so, it wont be me debating marc

You think you can make 500whp on 20 psi from a GT turbo on pump gas? What proof do you have of this? Or are you just internet dynoing an imaginary vehicle? Where would you see full boost, 4500, 5000 rpm? How convenient is that power band for a non race car? These motors are not meant to be spun above 8K, so good luck with the longevity of the motor specifically the head thinking you will be able to take advantage of big GT's. Or you could dump another 2500+ into building a head for this application. I love GT turbos, i ran a 42R on my last car. But it depends on your goals, budget, etc...
Way better turbos? As much as i loved my 42R, it took a crap on me within 500 miles, i replaced the center section, it went again... Finally replaced it with a journal bearing center and it lasted a while.

[B528QM]

I didn't mean to limit you like that, sorry. I'm basically looking for the best 500 whp set up... So if you'd like to add similar info on another turbo then that would be great

[generationjdm]

You think you can make 500whp on 20 psi from a GT turbo on pump gas? What proof do you have of this? Or are you just internet dynoing an imaginary vehicle? Where would you see full boost, 4500, 5000 rpm? How convenient is that power band for a non race car? These motors are not meant to be spun above 8K, so good luck with the longevity of the motor specifically the head thinking you will be able to take advantage of big GT's. Or you could dump another 2500+ into building a head for this application. I love GT turbos, i ran a 42R on my last car. But it depends on your goals, budget, etc...

My proof is vast doing it at 20lbs 509whp on gt2871ss on 91 octane winter gas mustang dyno last spring, vags car did it also... What does full boost have anything to do with anything? Ko4 car full boost 22-24psi 3400 maybe 340-360whp gt car 14-16psi at 3400 making the same or more and the power band has increased by 1200rpms also... I think you should ask yourself if running 30lbs on rs6ss and race gas to make 500whp is not going to tear up that motor much faster then running 20-22lbs on gtss making the same or more power...

[generationjdm]

Bottom line way less boost running the gtss longer living motor less heat, the rs6ss dont spool but a couple hundred before the gt2871ss at best.. The gt2560ss which is a gt28 hits full boost at 38-3900rpms

[NYCVR6]

Bottom line way less boost running the gtss longer living motor less heat, the rs6ss dont spool but a couple hundred before the gt2871ss at best.. The gt2560ss which is a gt28 hits full boost at 38-3900rpms

RS6's make 2 bar at 3800 rpm... You think 2871's make 2 bar by 4000 rpm??? You are living in a fantasy world. Im not saying one is better than the other, you are comparing apples and oranges is what im saying. Dyno number this, gt that, blah blah ... Go build a car and stop internet debating...

Me personally, i am going with RS6's. They use all factory coolant and oil lines, bolt up to stock exhaust manis, and make decent power. Im not looking to build some beast of an S4, just a reliable fast car.

[generationjdm]

I really don't understand why your getting upset and saying I'm internet browsing/racing or living in a dream world, I don't recall ever trying to insult you. The gt2560s which r gt28s hit full boost at 38-3900rpms and the gt2540ss hit boost even sooner.. I'm building a car and not doing what a lot of people r doing, I'm using common sense which your last statement is clearly not... Who cares if it hit 10 bars at 3800 rpms the more boost the longevity on parts goes out the window ie more heat less forgiving tune zero room for error 30lbs sounds cool but it's crazy to think it's going to be more reliable or last longer then a car running 20lbs 50% less boost with a clearly better turbo design and making the same or more hp... Have you ever seen the stock coolant and oil lines a third grader could reroute and make the lines 2 inches longer... Ya the rs6ss bolt up to the manifolds they just don't bolt up in the car, I think making the lines which is a complete joke to do is far easier then cutting up the turbos and cutting up the car to make the rs6ss fit. The lines that need to be lengthened r connecting to barbed fittings and tees how hard is it to cut a -4 line and connect it to a barbed tee fitting and run a AN fitting... O ya the downpipes don't fit the rs6ss either

[generationjdm]

Whats better a turbo running 30lbs race gas at 3800rpms to make the same hp as a turbo that is running 20psi pump gas at 3800rpms?

[FrimmelNoJerz]

heyyy justin...if ur sellin them hybrids i might want to steal them from you.

[NYCVR6]

Whats better a turbo running 30lbs race gas at 3800rpms to make the same hp as a turbo that is running 20psi pump gas at 3800rpms?

Once again you and your silly dyno numbers. You are comparing two different cars, on two different dynos, in two different condtions. Im not getting upset, it's just that you havent built a damn thing yet, you just talk about it. Build something, prove the claims you make, no dyno number bullshit, get out and race the car. How about this, hurry up and build your GT car,ill be done with my car with rs6's by spring time. I'll race you for $1000 minimum......

[NYCVR6]

heyyy justin...if ur sellin them hybrids i might want to steal them from you.

A friend of mine said he might want to buy them from me, otherwise i will let you know first.

[joemomma]

http://videos.streetfire.net/video/2...a500bec748.htm

Thought this might relate to this topic. Keep in mind this car has Rs6 turbos and all the supporting goods.

[generationjdm]

I'm not claiming dyno numbers it's pretty clear with out mentioning names they pretty much supported everything i said including your comment about the rs6ss/car making 30lbs at 3800rpms... Have you ever seen or herd a gt car running anything close to 30lbs why because they don't have to that's why... I'm actually building something not trying or hoping to slap shit together and wondering if it will fit... Have you ever designed or built something as extensive as a gt kit yourself or anything for that matter? I'm not taking the easy way out if so I would of did ko4ss or bought someones kit... Good luck with your rs6ss, drag racing seems to be the only thing that matters forget about quality or custom parts... Justin I have all the means to max out the s4 i really just don't wish to, it's not the right car for that at all...

[10SecS4]

My proof is vast doing it at 20lbs 509whp on gt2871ss on 91 octane winter gas mustang dyno last spring, vags car did it also... What does full boost have anything to do with anything? Ko4 car full boost 22-24psi 3400 maybe 340-360whp gt car 14-16psi at 3400 making the same or more and the power band has increased by 1200rpms also... I think you should ask yourself if running 30lbs on rs6ss and race gas to make 500whp is not going to tear up that motor much faster then running 20-22lbs on gtss making the same or more power...

You need to check your sources on the Vast dyno pull. You have it ALL wrong.

Is your car done yet?

[FrimmelNoJerz]

A friend of mine said he might want to buy them from me, otherwise i will let you know first.

yeeeehaw!!!

[joemomma]

Hey frimmel you back in fl?

[NYCVR6]

I'm not claiming dyno numbers it's pretty clear with out mentioning names they pretty much supported everything i said including your comment about the rs6ss/car making 30lbs at 3800rpms... Have you ever seen or herd a gt car running anything close to 30lbs why because they don't have to that's why... I'm actually building something not trying or hoping to slap shit together and wondering if it will fit... Have you ever designed or built something as extensive as a gt kit yourself or anything for that matter? I'm not taking the easy way out if so I would of did ko4ss or bought someones kit... Good luck with your rs6ss, drag racing seems to be the only thing that matters forget about quality or custom parts... Justin I have all the means to max out the s4 i really just don't wish to, it's not the right car for that at all...

I agree it's not the right car for that. Like i said i am just trying to build a fast reliable car. Have i ever built anything???? How about this, i built in my garage...All fabrication, motor assembly, tuning, etc..... All done by me... No shops involved... Let's see what you have accomplished...

[generationjdm]

You need to check your sources on the Vast dyno pull. You have it ALL wrong.

Is your car done yet?

Clear the air about the Vast car, he's never gave me any reason to make me think he's not telling the truth I've been in the car... Marc it's a little more work then just slapping ko4ss on, once again I have part's on back order... Marc you of all people i would think would know how much work it is to do what I'm doing, theres a lot of parts being made nothing really off the shelf...

[generationjdm]

I agree it's not the right car for that. Like i said i am just trying to build a fast reliable car. Have i ever built anything???? How about this, i built in my garage...All fabrication, motor assembly, tuning, etc..... All done by me... No shops involved... Let's see what you have accomplished...

I posted a while back of a few cars I've built, I've built cars that went into that kinda of detail also, i do know how much time and work and headaches r involved...

[generationjdm]

You made the cage,the cooler,piping, intake manifold, exhaust manifold ?

[SummitS4]

so if i want to get power for a street car without a ton of money and work are rs6's the way to go or should i wait and get gt 28's? i guess i should wait till this all gets sorted out

[Frozen S4]

so if i want to get power for a street car without a ton of money and work are rs6's the way to go or should i wait and get gt 28's? i guess i should wait till this all gets sorted out

Dude, there is no big power cheap, period. KO4's are proven, reliable and fast. I am certain that the vast majority of this board is unable to drive a KO4 car at the limit on a track............I am not talking the straight one. So if you want cheap, get KO4's. RS6 or GT's need rods and other supporting mods =$$$, no ifs or buts unless you want to stare thru holes in the block.

If you are not convinced about my statements I gladly melt a RS6 or GT high boost S4 with no internal work doing hotlaps on a high speed circuit for about 30 min.

[lil' is 300]

Dude, there is no big power cheap, period. KO4's are proven, reliable and fast. I am certain that the vast majority of this board is unable to drive a KO4 car at the limit on a track............I am not talking the straight one. So if you want cheap, get KO4's. RS6 or GT's need rods and other supporting mods =$$$, no ifs or buts unless you want to stare thru holes in the block.

If you are not convinced about my statements I gladly melt a RS6 or GT high boost S4 with no internal work doing hotlaps on a high speed circuit for about 30 min.

They have high speed circuits in Alaska? Race around glaciers?

[NYCVR6]

You made the cage,the cooler,piping, intake manifold, exhaust manifold ?

Intake manifold was completely fabricated and built by me, along with piping. IC was made by bell intercoolers. I had to run an ATP exhaust mani as they were a sponsor of the car and i obviously dont have the means to build a cage in my home garage. Like i said, i assembled the motor oil pan to valve cover, fabricated and built the intake mani and piping, as well as plenty of other custom work on the chassis and motor related. I completely wired the car, including the standalone. Tuned the car, and made 660 whp. Rebuilt numerous gear boxes, made all windows, aluminum interior panels, seat mount, window net mount, etc.... So besides the cage/front end work, IC, exhaust mani, i built this car in my personal home garage. No bells and whistles shop, just a plain garage with limited tools, a craftsman compressor, borrowed welders, and so on.

Show me what you've done that can compare... I did this all by myself, with help here and there from friends... But for the most part, me in my garage...

Quit trying to look for every little part of the car i couldnt have possibly done myself in my personal garage... You asked me if i built anything trying to discredit me, and i proved you wrong. Show me what you have built, with proof. My name is on the side window of that car and i have plenty of dudes who can vouch that i built the car...

You have been talking about this setup of yours forever, dont act like building a car is rocket science. Lets see pictures of what you have completed...

[generationjdm]

Wow once again you seem very upset, i asked the simple question about those components to see if you did build them or not if so great job theres know need to assume i was being negative... This thread isn't about what i built what you built, theres a list of cars i built from v8ss to Honda's to the skyline in my avatar which was put together by me every nut and bolt of the whole car was in a box of 50lbs of bolt's when i got the car, completely dissembled down to the frame... I fully built the motor motor myself including porting of the head.... If you would like to inquire about some cars i've built pm me.... By the way the first wrench went on my s4 in the middle of July and didn't have any idea of doing a gt setup until the end of august 1.5 ago, also i've only been a audizine member since march. So if anyone out there thinks they can custom fab a kit in there garage by them self hold a job run half a dozen rental properties take care of a 2 year old and try to maintain a relationship all in under 2 months and complete this kit that's awesome your the man and my hero... I'm in zero hurry i have all winter to take my time and do it and if it takes 40 years to complete it that's fine, i have other things in life that r more important then this stupid car...

[esss_pho]

generation- i dunno bro i have seen you post numerous things but i have not seen anything that you said you have done. Please stop wasting bandwith as this is a RS6 Turbo FAQ

other than that..wouldn't one be able to generally homebrew a rs6 turbo set up by using k04 software as a band-aide until dyno tunning can be done?

[NYCVR6]

Generation is the same dude that asked lilis300 if the rs6 manis will bolt up to a 2.7. I don't buy any of the bs that he built anything ever. I'm done here this is foolish I'm getting tired of the internet dyno crap. Hit me up when u finish your car gen. Until then its just talk.

[AMC]

exactly..generation seems like al ltalk i have yet to see any proof, all u do is ask people shit that some1 u pretend to be would obviously know...lets see proof lets see pics with u workin on the cars, real dyno sheets, progress on ur car such as pics n shit, etc

[///M3 TO S4]

exactly..generation seems like al ltalk i have yet to see any proof, all u do is ask people shit that some1 u pretend to be would obviously know...lets see proof lets see pics with u workin on the cars, real dyno sheets, progress on ur car such as pics n shit, etc

+1....in our opion he's a internet keyboard warrior

[DAP]

Have you ever seen or herd a gt car running anything close to 30lbs why because they don't have to that's why...

The ASP GT cars run 30+ PSI.

[generationjdm]

Justin your right I'm b.s, first your words where i fabricated everything then the next post totally changed second you said i built this car the next post was with help from friends. Amc I don't recall seeing anything you built you have a v6 mustang and a stage 1 s4 in your avatar... The next time i put air in the tires i will take pics or you... The lil300 comment was a lame inside joke... Theres way to many hypocrite's here, bottom line Justin your talking about the rs6ss because you bought some or some where given to you, if you had gtss you would be pushing them also. Bottom line what ever your running is naturally the best way to go when you first bought the hybrids they where the best thing in the world now the rs6ss r, what proof do you have wheres your facts, is it because marc might be running them on his blue car one day. This was a thread about rs6ss and i gave my Opinion and some facts and someone turned this into a big thing about what have you done... Theres way to many sheep on this board, people think for yourself this board sounds more and more like a dsm board... http://www.audizine.com/gallery/show...0&ppuser=16391 Heres the few i actually had pics of, i might have 5-7 other cars floating around with pics...

[blackbenzz]

Damn, I'm just trying to figure out what turbo setup to get for my car and have to weed through all this bullshit to find... nothing. Its like this on every friggin thread! I dont care who built what or who has a bigger e-penis, stick to the pros and cons of different setups and provide actual USEFUL data. Thanks

[generationjdm]

I actually tried that in the very beginning and you see what that got this thread, the zombies came out

[revhards4]

well, I don't know about any of you but I took my turbo's off the car and am currently running a progressive nitrous setup on an n/a 2.7. 150 shot progressive to a 350 shot and all is well. Turbo arguing has gotten soooo lame that I decided to go all motor with 14:5:1 compression and the nitrous "just in case"

Oh, I also threw on a dominator carburator setup and ditched the fuel injection setup, it was lame anyway with all them sensors and such.

^^^^YOU GUYS ALL SOUND THIS RETARDED^^^^^^^^^^^^^^^^^^^^^^^^^

[saucys4]

all right i'll try to break the ice. In your opinion, what turbo setup would be best for a track with drag racing excluded? GT's or RS6's?

[Clay @ Kinetic]

Good thread lol, Justin don't waste your time

[cleveland222]

thanks everyone.
this place is full of useful info.

[volks88]

thanks everyone.
this place makes my head hurt

fixed