Supercharged RS4 Vs Stock RS4

Post by **Doug_S2** » Mon Sep 20, 2010 9:54 pm

I think the best 3k to 8k is 6.5 but conistant 6.7

Water meth will be testing in the next couple of days.

Post by **Doug_S2** » Mon Sep 20, 2010 10:07 pm

This is getting the snow performance kit. They have an 8 port distributor which is nice. The controller is injector duty cycle dependant and/or boost dependant. Until we get it working I cannot say if the duty cycle will work since it is a lot lower than a conventional injector, but boost is proportional to revs on the supercharger so if you just have a proportional boost controlled kit it will work well.

Post by **pippyrips** » Mon Sep 20, 2010 10:07 pm

Love it

Post by **Doug_S2** » Mon Sep 20, 2010 10:14 pm

And some peak MAF numbers:

Stock RS4 healthy but clogged: 145 to 157 g/s measures 360-390 ps
cleaned and port manifold: 170g/s measures 425 ps
tuned with exhaust: 180 g/s - measures 445 ps
Supercharged: 230 g/s - measure 515-520ps

All approximates - but shows it flows air to make the power .

Post by **sar** » Mon Sep 20, 2010 10:15 pm

how much are kidneys worth?....

Post by **Doug_S2** » Mon Sep 20, 2010 10:21 pm

Some comparison plots

Post by **P_G** » Mon Sep 20, 2010 10:31 pm

Doug_S2 wrote:This is getting the snow performance kit. They have an 8 port distributor which is nice. The controller is injector duty cycle dependant and/or boost dependant. Until we get it working I cannot say if the duty cycle will work since it is a lot lower than a conventional injector, but boost is proportional to revs on the supercharger so if you just have a proportional boost controlled kit it will work well.

Do you know if it will just work on the N/A engine? Asking round the various manufacturers they are easily confused thinking it is forced induction and saying yes and then when they are advised it is NA they 'don't know'?

Post by **Billy** » Mon Sep 20, 2010 10:32 pm

Look at all that lovely torque

Post by **Doug_S2** » Mon Sep 20, 2010 10:34 pm

If the injector duty cycle control has enough resolution at the really short opening times it should be controlable on a NA car. I will find out in the next couple of days if it will work on just duty cycle.

Post by **Dom81** » Mon Sep 20, 2010 11:18 pm

Amazing - great work guys

Hope to see it next Thurs when I'm booked in...

Post by **stumpyrs4** » Mon Sep 20, 2010 11:36 pm

I hate to say it, but possibly the ultimate weapon now?

Please correct me someone...

Fantastic looks and styling (interior and exterior).
Fantastic handling/steering/braking/noise.

Now with what it's been lacking (IMO) some additional grunt. Should scare pretty much anything on the road now.

Carbon body panels (front wings, bonnet, bumper + bootlid) + lightweight wheels and seats...

Where do I sign. I'd almost be tempted to fukc the mortgage and buy a cheap (£22k) B7 and have this done, along with some other bits too of course

Hats off Doug for making the leap. It's about time someone did over this side of the pond (and yes I'm well aware of QST's MTM kit)...

Post by **ArthurPE** » Tue Sep 21, 2010 12:55 am

timed it 1/2 dozen times using an Omega Speedmaster, avg 6.8-7.0 (I think you started a bit late

)
yours ~6.7, just goes to show how accurate the OBC timer can be used...
big improvement, ~8.5 to ~7...no doubt about it
what did I guesstimate?
very impressive... pulls like a train...
looks like most of the gain is down low, where you need it, very nice work

what other mods?
just a cat back?

Post by **scaghead** » Tue Sep 21, 2010 6:26 am

group buy anyone??

Post by **neckarsulm** » Tue Sep 21, 2010 8:25 am

Nice one Doug, that power with the stock chassis will be a serious tool.
Did you to Germany for that vid?
funny how it looks like M40 but reversed

Post by **Doug_S2** » Tue Sep 21, 2010 8:28 am

neckarsulm wrote:Nice one Doug, that power with the stock chassis will be a serious tool.
Did you to Germany for that vid?
funny how it looks like M40 but reversed

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Supercharged RS4 Vs Stock RS4

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