okay.. this is where i think im going with my build.. so far.. im going rs6's ,... because i found a set of turbos for a very reasonable price.. you all may know him as jibberjive, but im pretty sure hes going to go with a gt kit on his and he is building his heads and all.. so he offered to sell me his rs6's and go in that direction.. i think as well im going with a jhmotorsports rs6 tune, ive already talked to jason about what all i need and what to expect.. i already have numerous other pieces needed, bigger side mounts, a bipipe, 3 inch asp dps (also from mike) mounts and such, so im just waiting on mike to sell me the turbos.. my only problem is.. im a little concerned about the lag difference in turbos.. i know full boost in my k03 car comes at about 2600 rpm.. im not sure about k04's or rs6's, but im guessing lag is longer and longest.. respectively.. im wondering how much that will affect my happiness of the build and results, or is it just nominal?? the low end torque on my stage 2 car is awesome, i love the feeling when the torque hits.. just how much longer will i have to wait with a k04 or rs6 car? i know when it comes on it will be ridiculas to compare them but i dont want to have to rev them to 4000 to feel the beast.. ya know???

 

i do have a quick question.. was going to get some headers for my build.. talked to some people and they have said that ported manifolds make for a faster exhaust velocity then headers do.. so.. what have you found? i can port my own manifolds and be ready to go.. but id rather know which actually performs better.. i dont want to not spend, i want the best outcome for me not building my engine..

 

Hmm i'm kind of lost as to the overall power of the ko4.

This is what i was thinking:

2004 Audi a6 2.7 s-line.

265 Hp Stock
Giac Chip = 70hp
CAI = 6-8hp
Headers = 8-10hp
High Flow Cat = 3hp
Cat Back Exhaust = 8-10hp

That would give me 365hp total (350hp(5 speed tip) if audi/hoffman can't find me a 6 speed, then i'll of course have to add a Giac or Apr Tip Chip). So i'm confused, if i'll be getting around 365hp shouldn't the KO4 be able to easily push me over 500hp?

 

Bigern,

Are the RS6 turbos modified to fit with your ASP downpipes, or are you going to have to weld a new flange on the downpipes?

I dont really have any experience on the spool question, just know that at lower boost or not being fully spooled the RS6 turbos **could** still be making more power than your k03's at full boost. But having said that the rs6's real difference from k04's is in the top end obviously, so your power is going to be up higher when compared to smaller tubos. I dont think youll regret it, though i dont know how much faster it is than a k04 car in the real world unless your going to redline full throttle.

As far as the manifold/header situation I am going with ceramic coated, ported and polished stock manifolds with my k04's. I dont think youd run into any problems using someting like that with your RS6's, i probably wouldnt spring for tubular manis unless i was going with a GT kit. Especially having seen the pictures of the AWE manifolds cracked and falling apart.

Keep in mind just because its advertized dosnt mean thats nessicarily what your going to get. Also we generally talk in wheel HP not crank HP, theres about a 20-25% loss from crank to wheels in these cars. To answer your question, a custom tuned and built k04 car can make 400whp; though it takes good parts, and a good tune, no half-assing and you wont get that with an OTS kit. Do the math and thats about 500 crank HP.

Do the math again with your guestimate of 365HP on a stage 2+ 2.7T and you will fins you have less than or just about 300whp, which is what would be expected for a healthy stage 2+ (pump on the low end, race gas on the high end). We speak whp because thats what you get when you go on a dynomometer, but there are sooo many factors as to what parts are on your car, the condition of the parts, air temperature, accuracy of the dyno. Basically do what you can and accept the results, numbers are just that, numbers.

Update on my project: Right now the car has been off the road since march. I just got out of jail saturday and im back to working 12-15 hour days, so things should start moving allong pretty soon.

I have:
K04's
Hardware
034 Inlets
034 3" downpipes + high flow cats
034 Race density motor and transmission mounts
Snub with cage
034 subframe bushings and rear diff mounts
JHM polyurethane DTS mount (stronger than what came with the DTS)
02 sensors
New airbag contoll module
VCG and cam seals

Needless to say i have alot to get still, and im ordering alot more this week. Any suggestions are welcome, i will be getting headgaskets & head bolts, ECS ultimate timing belt kit with lock bar, oil lines, probably a new n75 and spyder hose, maybe a samco hose kit and genx bipipes, some kind of intercooler (034, AWE, ER, i havent decided really, any input would be considered) at some point soon the JHM tranny rebuild, might wait on clutch till i blow up my OEM RS4. Will be fueled and custom tuned by EPL by august (or at least thats my goal)

 

sour diesel,..lol.. ive been missing your posts.. but.. JAIL!!! holy ****..
and to answer your questions.. yes.. i bought them from a guy that had mike at VAST go over the turbos and weld the flanges on it.. so it should bolt right up... and yeah.. im thinking of porting my manifolds, and was wondering how much hp would i gain if i ported and polished my intake?? im sure it has to help some.. i mean whatever we can do to flow air better, right??..and since ill have the engine out it wont be too difficult to do...

and i was thinking the same thing.. 10 psi of boost with rs6's may be well more power than k03's at 17 psi..

 

Its just good to be on the outside again Im on 1 year probation so i have quit smoking cannabis, which means im gonna be working alot more, and im gonna have ALOT more money in my pocket to spend on the car. Hell yeah im ready for stage 3

Ya know every little bit helps, the stock intake manifold definitly leaves room for improvement. If you can do the port and polish yourself to open up the runners and smooth everything down it might be worth it to try, though you probably wont get any real measureable gains. Iv seen pictures of stock and after a good professional PnP and it looks like a world of difference, even though the runners CANT be opened up to be as big as the RS4 manifold.... Iv also seen some less than perfect jobs that dont look very smooth and could potentially increase turbulence inside the manifold.

Just curious will you be running electric exhaust dumps? Thats a big power adder right there, dumps after your 3" downpipes and before any cat will mean pretty much 0 backpressure when you wanna race.

I assume your going to be using a bigger MAF, what about an open element intake? Also bipipes..... stock plastic, APR bipipe, or genx metal bipipes + a boot? (the last being the best IMO)

To me those are areas that could use improvement as much or more than pnp intake manifold, but then again cost money

 

yeah, done got the apr bipipe sittin' in the garage collecting dust at the moment, and im pretty sure the fueling/tuning im going with has an open element intake.. was going to do an ssp custom tune for e85.. now not so sure since the closest places that sell it around here are an hour away... well, closest that ive found so far...(still looking)..
oh well, whatever tune i go with im pretty sure that opening up that intake a lil' with porting and polishing cant be bad, assuming that i do it correctly..

 

iv got the APR bipipe too, i might sell it though and switch to genx and a samco boot

 

why would you do that.. less weight? better performance? both? geez ive already got almost 4500 into this build and now i occasionally have a problem starting.. it cranks forever and you can see much smoking coming out the tail pipe and then after like 3 minutes of constant cranking itll stumble and start.. any ideas?? only codes are o2 sensor high resistance and random misfire codes.. hrm.. and a coolant malfunction code.. i wonder if its reading like 400 degrees and causing some issues with trying to start too lean?? or reading like -60 degrees and causing flooding??

 

JUST GOT THE RS6'S TODAY!!! im pumped.. i just have a few more things till im ready to build.. i need my dp's and inlets, john at south bend clutch to get back with me on the stage four ceramic exchange, ive got hardware, intercoolers, rs4 pressure plate, 034 engine mounts are on the way. then i need fueling and tuning, and a front end control arm set. i guess ill decide later on fueling and such but was talking with greg at ssp.. well see..