Hello,

I am in the market for a 2003 Audi RS6. I currently own a 2004 Volvo S60R which is pretty significantly modified. It is probably the fastest S60R still on the stock KKK24 turbo but it still after investing a good 20k in mods hold a candle to a RS6 with either the Giac or APR ECU upgrades.

Anyway I was just wondering if anyone knew what the stock boost pressure is on the twin KKK26 turbos? Also I frequent this board alot and there is a member, I think it is GIAC-RS6, that has the GIAC chip installed. Can you tell me what the boost pressure is increased to with the GIAC? Anyone out there have the APR ECU upgrade installed, any guess on the increase in boost pressure on that option?

Thanks for the information. I have wanted a RS6 since they came out but never could drop 82k on one. Since they have started coming down in to the 40k and even 30k range it makes it an option.

 

You will love the RS6 if you get one man..

As far a boost goes I think the max stock boost is around 8 psi.. With my GIAC chip I think it increases to around 15. Some people are saying 20 psi is the max for GIAC, but I'm not sure.
The APR chip won't be as aggressive as GIAC, so I'm assuming it will have less boost pressure.

 

Awesome. I am running 21 psi now against my one kkk24 and the car is putting down 361 whp and 401 wtq. It is amazing what you can do when you have twin kkk26 turbos against a 4.2L V8. So 15 psi on the GIAC chip is getting you @400whp and @500 wtq? Any turbo lag? Do you have the ability to increase the boost pressure on the GIAC chip if 20 psi is the ceiling? I had a Giac chip on my A6 4.2L and it rocked so I would more than likely stay with that brand. Where did you get the Milltek exhaust from? Thx.

 

Yes 400 whp and 501 wtq, there is a little lag.. it's not much though. I'm sure you can increase the boost with the chip, but I have heard when you get around 450-500 WHP the stock trans can have some problems.

I got the Milltek from the stealership, they ordered it from the UK. I found them though at
www.stratmosphere.com

 

I would think that 400 to 450 whp on an awd dyno would be plenty. Using GIAC's own 1.29 crank power factor gets you to between 516 and 580 bhp with that. What do you think your car is doing 0 to 60 and in the quarter mile? I would guess it is somewhere around 4.2 to 4.5 0 to 60 and somewhere around 12.2 to 12.5 in the quarter. Have you had any reliability problems?

 

Yeah 400-450AWHP is perfect for a daily driver. I haven't ran it in the 1/4 yet but up here in CO it will hopefully run mid 13's. Without a manual trans I can't launch it nearly as hard..

As far as reliability I haven't had a single problem man. I say the same as Clarkson it's one of the best made cars on the road today.

 

I would not be surprised if it will run a 12.9 or 13.0 quarter mile. Mine runs a 13.2 consistently and 13 flat on a cool day with a sticky track here in Atlanta. I can power brake mine out of the hole (brake and gas pushed to the floor revs come up to about 3200) and with awd it is like being shot out of a cannon. You have some 100 more ft lbs of wtq than me.