Where are all the modded C5 RS6 at? 500awhp to 800awhp+?

[mrdave]

I find it hard to believe that I'm having difficulty locating build threads for this thing(considering its been out for a long time).

Welcome. The main issues with making huge hp numbers with this car is physical space (as in there isn't any) and heat management. The other is that the production numbers were extremely low so you're not going to find a ton of aftermarket support. 550whp is doable, but much more than that becomes cost prohibitive.

The main hp upgrades you'll find are: manual 6sp 01E swap, ECU tunes, (Wagner) intercoolers, and w/m to help manage heat. Both the intake and exhaust are quite good in stock form, especially the black "sound enhanced" exhaust. To get to 550whp you're probably also looking at upgraded turbos, a fuel pump, injectors, and a custom tune.

This guy apparently now owns the infamous Sportec "RS600" and is having AMD work it over. Looks like he's got a dyno run claiming 650whp: https://www.instagram.com/p/BbR5vntg...n-by=timhaugan

[RS6Goals]

Thanks for all the reply guys and thanks for the heads up.


At what point does the engine need upgrade? Is 600awhp fine in stock form?


Aside from manual swap to make room
I’m a bit confused on why the cost is so high considering that they don’t look like they include engine upgrade?


I mean 10 to 20k NOT including the manual swap?


Are you guys including labor or just parts?

[Ebtahi98]

it used to be these high prices. Now you could get parts for $100 of dollars cheaper and easier and a six speed conversion is much cheaper to be done as well. I’m in the middle of doing it

[Corbett]

Welcome. The main issues with making huge hp numbers with this car is physical space (as in there isn't any) and heat management. The other is that the production numbers were extremely low so you're not going to find a ton of aftermarket support. 550whp is doable, but much more than that becomes cost prohibitive.

The main hp upgrades you'll find are: manual 6sp 01E swap, ECU tunes, (Wagner) intercoolers, and w/m to help manage heat. Both the intake and exhaust are quite good in stock form, especially the black "sound enhanced" exhaust. To get to 550whp you're probably also looking at upgraded turbos, a fuel pump, injectors, and a custom tune.

This guy apparently now owns the infamous Sportec "RS600" and is having AMD work it over. Looks like he's got a dyno run claiming 650whp: https://www.instagram.com/p/BbR5vntg...n-by=timhaugan

Hi. Thats my car. Its making near 700whp on a heartbreaker mustang dyno on 92+meth. Switching to e85 any day now. High compression engine should love it. Will update when I have something. Car is on stock exhaust manifolds fyi.

[lswing]

Hi. Thats my car. Its making near 700whp on a heartbreaker mustang dyno on 92+meth. Switching to e85 any day now. High compression engine should love it. Will update when I have something. Car is on stock exhaust manifolds fyi.

Glad it's up and running. You're on the Tial 880's or something like that correct? And fully open exhaust or high flow cats? C'mon you got to give us all the details! AMD tune, and it's manual correct? Handful of things bringing your whp up...

[Corbett]

Glad it's up and running. You're on the Tial 880's or something like that correct? And fully open exhaust or high flow cats? C'mon you got to give us all the details! AMD tune, and it's manual correct? Handful of things bringing your whp up...

They are called tial 880s. Basically tial 770s are a 2871 wheel these are 2873. Not a huge difference. Also larger comp cover. Downpipes are 3” no cats. Straight pipe with a X and 2 resonators. Not that loud actually. Block was rebuilt with ie rods, coated stock pistons. Heads redone with ferrea valves. All custom hardline fuel lines. Completely redone wiring harness and wire tuck. Custom inlets for turbos. Stock exhaust manifolds ceramic coasted. Custom intake setup. Bunch of other stuff. Also custom geared trans now with longer 1/2 and billet input shaft.

[RS6Goals]

They are called tial 880s. Basically tial 770s are a 2871 wheel these are 2873. Not a huge difference. Also larger comp cover. Downpipes are 3” no cats. Straight pipe with a and 2 resonators. Not that loud actually. Block was rebuilt with ie rods, coated stock pistons. Heads redone with ferrea valves. All custom hardline fuel lines. Completely redone wiring harness and wire tuck. Custom inlets for turbos. Stock exhaust manifolds ceramic coasted. Custom intake setup. Bunch of other stuff. Also custom geared trans now with longer 1/2 and billet input shaft.

Thanks for posting.
If you dont mind can you provide more details?
Do you happen to have the spec of the tials spec? more specifically exhaust wheel size? I cant seem to find this on google.
what intercooler are you using?
how much boost are you pushing?
are you using the stock Y (before the intake manifold)? or did you make a custom piece?

Well this looks like its already contradicting some people on here regarding the limit of the stock exhaust manifold.

[Corbett]

Thanks for posting.
If you dont mind can you provide more details?
Do you happen to have the spec of the tials spec? more specifically exhaust wheel size? I cant seem to find this on google.
what intercooler are you using?
how much boost are you pushing?
are you using the stock Y (before the intake manifold)? or did you make a custom piece?

Well this looks like its already contradicting some people on here regarding the limit of the stock exhaust manifold.

There is lots of info on tial 770s which are basically the same thing.

im still using the sportec intercoolers unless we determine they are hurting flow or have too much pressure drop.

right now it’s on wastegate boost 20psi or so. Not sure what we will run in the end. Depends what the car likes.

stock bipipe from intercoolers to throttle body.

and yes the same guys saying the exhaust manifolds are a restriction are the same guys who said this car wasn’t fast before it went in for upgrade, even though it still the highest trapping 1/4 mile Rs6 in the USA 5 years later.

[lswing]

There is lots of info on tial 770s which are basically the same thing.

im still using the sportec intercoolers unless we determine they are hurting flow or have too much pressure drop.

right now it’s on wastegate boost 20psi or so. Not sure what we will run in the end. Depends what the car likes.

stock bipipe from intercoolers to throttle body.

and yes the same guys saying the exhaust manifolds are a restriction are the same guys who said this car wasn’t fast before it went in for upgrade, even though it still the highest trapping 1/4 mile Rs6 in the USA 5 years later.

Awesome, appreciate the details, sounds great!

[RS6Goals]

There is lots of info on tial 770s which are basically the same thing.

im still using the sportec intercoolers unless we determine they are hurting flow or have too much pressure drop.

right now it’s on wastegate boost 20psi or so. Not sure what we will run in the end. Depends what the car likes.

stock bipipe from intercoolers to throttle body.

and yes the same guys saying the exhaust manifolds are a restriction are the same guys who said this car wasn’t fast before it went in for upgrade, even though it still the highest trapping 1/4 mile Rs6 in the USA 5 years later.

Yea im still having difficulty locating tial 770 spec. The only ones I found are questionable sources and it states:
Cold:
47mm
hot:
53.9mm
Is this correct?


sportec IC looks tiny, 270 x 270 x 64mm. Have you log your AIT? before meth and during meth inj?

what size nozzle are you spraying? and how many?
Is it progressive or consistent?
Also where is the placement?

I think with water/meth you can get away with a smaller intercooler(I've seen some run without IC). on my previous car my AIT would literally drop from 110 to 70 when it kicks on.

Have fun with E85, I was pushing 35psi on a daily and not a single issue
Well with the exception of having to visit the gas station almost twice a week. Awesome gas sucks for daily use.

Thanks for posting. Its great to finally find someone here that has some power mods.

[travish325]

They are called tial 880s. Basically tial 770s are a 2871 wheel these are 2873. Not a huge difference. Also larger comp cover. Downpipes are 3” no cats. Straight pipe with a X and 2 resonators. Not that loud actually. Block was rebuilt with ie rods, coated stock pistons. Heads redone with ferrea valves. All custom hardline fuel lines. Completely redone wiring harness and wire tuck. Custom inlets for turbos. Stock exhaust manifolds ceramic coasted. Custom intake setup. Bunch of other stuff. Also custom geared trans now with longer 1/2 and billet input shaft.

Did you have to modify the stock manifolds to bolt up to these turbos?