Before and after upgrading the compressor wheels on my K24's...(edited)
 

<center><img src="http://pictureposter.audiworld.com/20878/tom-1.jpg"></center><p>
This is on my 993tt.
Running 1.1 bar before
Running 1.2 bar after

The only difference is the super 60 compressor wheel from the stock K24.

This should get some wheels turning for you guys to look at other compressor wheel choices than the KKK series. The Garrett series are high pressure wheels vs the KKK low pressure wheels.

FWIW the upgrade cost me $600.00 total.

which colors are what? can't read the description.

Amazing difference in power. Was that 1.2 bar before and after? Super rich mix too.

Red is after Blue is before...The before HP curve overlays the after torque
 

curve making it a little difficult to read.

in that case, wow, nice top end kick and flatter torque curve...

Yes same before and after...I am working on fixing the fuel curve.

Now you just need more boost between 4500-5500rpm, so you can really take advantage of it.

getting a little lean up top on the new wheel it seems

when your mod's torque curve is identical to the baseline's hp curve..
 

you know you have a winnar

I am out of injector. New ones on the way.
 

So for now I only run 1.1 bar (509whp)

I would have to go down in turbine size to do that. I would rather keep the power...
 

up top.

What are your octane and displacement values again? Anyway your
 

car sounds like a total beast! Congrats.

Then you just need some more revs up there so you can stay in it a little more.

Also the chart can be misleading...Since its a non DBW car if you feed it throttle down low..
 

instead of mashing it at 2,000 rpms like the dyno operator did it pulls much harder.

993 is a 3.6l motor i believe...

yeah

She's big. Just fast and loose->That 4600rpm plateau would move on up to over 6krpm with our
 

motor, *if* the turbine was the same and the comp. housing was the same and the VE was the same. Adjust all of those to move the peak hp rpm up and you get hybrids probably topping out at 450whp(or whatever) at redline for us. ;-)

Roughly speaking.

Yeah, thanks for sharing :(
 

I've been reading and posting on rennlist as of late. I'm really thinking about ditching the S4 modding all together and starting to tinker with the 996tt. The warranty is up now I believe. If it's not up yet, it's up in a couple of months.

The 996 will have a better torque curve than my 993.....
 

the 996 with similar mods has about 100fp adavantage over my car due to 4 valves per and variable cam timing.

That 996tt are a real bargin at the moment.

good to hear :o)

looking good...........why do you say that KKK doesn't have high pressure ratio wheels?