Right, makes sense. Hope we see more of these supercharged beasts around 
I agree those additional revs definitely help the rs4, I did think the s5 had a stronger motor and could rev out more than the s4 though.
I bet this is a rugged and reliable setup, hope to see more track times
To go faster the motor needs to be built. The kits that pushed the boost and hp were popping motors. Its incredible that a motor built for 354hp can reliably hold nearly 200 more hp stock.
Got it, Really is an amazing feat!
Donāt want to thread jack, but What are the weak points that need to be addressed in a rebuild? Different piston alter compression? I assume not a full build?
Rod, Pistons, Sleeves and Heads for whole tamale. Not sure if sleeving and heads are optional and or essential. A built motor is something Iām interested in, I hope enough others are also to stimulate JHM to stay way ahead of customer demand and keep the parts the on the shelf.
KM
Yup, the bottom end of our motors are solid.
Iām considering R8 v10 vs built S5. Not sure what JHM plans are?
Unless audi builds the R6 based on the cayman platform.
The S5 4.2 V8 bottom end is definitely better than the older B6/7 S4 4.2 V8 bottom end. However when you get past the stage 1 power levels the weak points of the engine are going to start showing up.
That R8 V10 is nice. It needs to be a S-tronic though.
The R6 would be interesting but I would expect it to be around $100K to be between the TT and the R8.
the R6 will be cool if it has the Audi 2.5T five. Basically that āquattroā concept they floated a few years back
In other news, the new TT looks fantastic. Saw a nice TTS at a golf course. Too small for me, but the TTRS will be great.
Why s tronic vs r-tronic? I thought the r-tronic could hold more power, I know itās not a great system thoughā¦
Agreed they look fantastic!
Yes on the r8 tho, are we saying the s5 B8 motor is good for about 200 chp over stock? For a long while? Still impressive, I assume a built motor is what another 6-10k?
Yup the S5 engine safe at 500-550HP levels. Thatās where JHM sets them up at. I would sign up for rods, pistons and new bearings. I think the OEM head is fine for even more HP with boost involved. Anyone ever see any feedback out the other engines theyāve built in the past?
Boosted
Surprisingly I agree about the new TT, its one of the only new Audiās I like as it has been improved all around. The TT-RS should be insane. This means if they do bring a R6/quattro it will be smaller than the new A4/5 but larger than TT-RS fitting nicely in its segment competing against the F-Type, AMG GT, Cayman GT4.
S-tronic is a dual clutch proper tranny for the R8, but the R-tronic was the original slush box single clutch
Oh I know the system is not a true dual, but from a holding standpoint I thought the r-tronic was proven to hold the turbocharged and supercharged modded versions running as well. Can the s-tronic hold as much power?
If yes, then ignore my comment. I know some people who prefer the r-tronic while, others think itās trash. Iād probably consider the 6-speed manual which likely holds less power than bothā¦
How does this kit work with the stock clutch? I just got my stock ove replaced because I was never going to go with the APR SC. Also is there a port anywhere for meth injection?
Welcome erix920
The JHM kit is going to be too much for the stock clutch. Heck even some S5 guys with the JHM tune dont have the stock clutch hold up to the power the JHM tune adds.
There is no specific port for methonal but since its a Cfuge supercharger you can tap in anywhere before the throttle body.Still the Cfuge superchargers are not the heat monsters the rootsstyle superchargers are the APR kit is the roots style. So methonal isnt really a big need. Plus your now adding so much air that you would need to spray a lot of fluid to impact the charge temps.
Im sure you have seen this but there is more information about the kit with links and everything from JHM
http://audirevolution.net/forum/index.php?topic=4128.0
I just clicked on the link for more information and saw the price of the kit was only 8000 thats crazy cheap it blowes everyother option out of the water. WOW
Thatās sad to hear, maybe I can sell the used one. Thanks for the info about the meth injection. Looking forward to purchasing next year! Good job on the competitive pricing.
You can always go and get the JHM tune. Its one of the best performance tunes out there that there is. With good supporting mods it really helps get the S5 into RS4 terittory as far as performance and acceleration. Not only that but if you get the tune when you get the supercharger you dont have to pay again for the tune if I remember correctly. That saves a few more dollars.
I was thinking about that too. Do I remember reading somewhere that thereās a discount if you already have a tuned ecu from them when (if) you go supercharged?
I think JHM really has set up a full line to gettting a supercharger for a little cheaper. You can kinda buy some of the supercharger things over time. They not only add a good amount of hp and driving pleasure but they help get you ready for the JHM supercharger kit.
Like
the JHM tune
The JHM 6 rib crank pulley and tensioner kit
The JHM oil cooler kit.
I think there might be one or two more parts that you can buy that come in the JHM supercharger kit that you can deduct off the price of the kit when you get it.
Adding in the spacers is going to help but thats not a mandatory part of the kit.