JHM PROJECT S6 V10 Performance parts RESULTS thread.

A6 All/ S6 All
#1

This thread is here to show you the step by step performance acceleration testing that has been done by customers and by JHM, each step of the way. Part by part.

There has been a lot going on over the past few months with the release of the JHM tune and a few customers getting their cars to the track. My JHM tuned S8 results, I thought were pretty impressive. My S8 Stock went 14.0 and JHM tuned went 13.0. That’s picking up almost a full second in the 1/4 mile with just a simple JHM tune and some bolt on mods. Here is my thread if anyone cares. http://audirevolution.net/forum/index.php?topic=3950.0

After that, our own rocman on here took a shot at taking his car to the track to get an idea on what the car is able to do after a JHM tune.

Rocco to his car to the track Stock to see how it would perform before the JHM tune and like all the other S6 V10 cars have so far he went basically 14.0. After the run at the track in stock form, he flashed his car with the JHM tune his car picked up and I’m quoting here. “After the JHM tune, the car ran 13.56@104.6. Four tenths and almost 5 mph was an incredible improvement, to say the least. My timeslips and a video of the JHM tuned run are here:” He only added the JHM tune and his car picked up that much acceleration.

Here is a link to that thread. http://audirevolution.net/forum/index.php?topic=4259.0

This is a big change from what the past had in store for the S6 market. With over 10 years of no real mods, the landscape is changing and JHM is at the front driving this movement.

So, while some of us have been taking our cars to the track after getting JHM tuned, apparently so has JHM. This thread is to chronicle their results and where this journey will possibly take all of us.

Before I get too far into that. Let’s all agree on what we have found over the past several threads. That’s that these V10 cars are fun but not really fast. The claimed performance numbers from Audi are not what ANYONE has seen in the real world. Almost all of us that have taken our cars to the track for 1/4 mile runs have all run the same thing. about 14.0 Seconds stock.

I would say the holy grail of 1/4 mile performance times for our cars should be anything the 12’s. That puts us in RS4 territory. I know saying something like that in the past would have been impossible but I think now with JHM’s support and all of us investing in the S6 and S8 platform by investing in JHM parts from spark plugs to intake spacers to the JHM 2.75" exhaust and the king of mods the JHM tune. I think this is possible.

#2

Starting with the car going to the track STOCK.

#3

This section will be the car going to the track with just the JHM tune and the results there.

#4

This post will be going to the track on the JHM tune intake spacers and a proper carbon clean with injector service.

#5

This post will be with all the above but with the added exhaust system from JHM. The 2.75" JHM exhaust system.

#6

Lastly this is all the above and the addition of the JHM LW parts like the LW rotors with the crank pulley.

#7

Keep in mind we have to wait for JHM to report back some of these results to us but I know they have already gone in each configuration.

#8

I’ll be heading to the track next month at the JHM-sponsored Audi Night, and will put my results in this post after that happens. In the last 2 months, as most of you are aware, my car has had a FULL overhaul by JHM, replacing ALL bad components - well over 30 items. It has also had a carbon cleaning performed by them.

In addition to returning the aging drivetrain to “like new” condition, they added the following (that I can remember at the moment, will update if I realize I forgot anything):

-ECU Tune
-TCU Tune
-Intake spacers
-Front & rear lightweight brake discs
-Lightweight crank pulley
-SAI delete
-Oil separator heater bypass

Those are all in addition to previously installed Miltek exhaust and K&N filters.

I did not track my car prior to this, as there were too many malfunctioning parts and error codes, I decided it was not safe. It’s pretty fair to assume that it was a 14.0 car just like all the rest of them. With the exhaust and the stock (heavy) wheels holding me back, I’m probably in the 13.1 to 13.2 range, purely speculation on my part until I get firm track numbers. Stay “tuned” 8)

#9

This is very exciting. I really want to see how this develops. JHM has changed the minds and the level in each platform they have gotten into .

The
B6/B7 S4 Stock was a 13.7 car JHM tuned W mods 12.7
The S5 4.2 Stock was a 13.7 car JHM tuned W mods 12.6
The RS4 4.2 Stock was 12.9 car JHM tuned W mods 12.1
The S8 5.2 Stock was a 14.0 car JHM tuned W mods 13.0

All other companys and tunes for the 4.2 and even for the 5.2 have been a complete bust. I like APR but all the guys in the 4.2 and now with the 5.2 have gotten no results that were better then stock. I think this thread showing it can be done and JHM is the company to help do it is a great idea. JHM is a big name but its a big name in the platforms they are in. You get guys that just come into the S6 section that might not have heard of them. This thread helps show people whats up and where you want to put your money for performance.

#10

I’ll update the upper portion of the thread as this thread continues.

It all has to start somewhere.

PHASE 1 - Getting OEM performance data.

The idea here was to take the project S6 to the track. The car was almost 100% stock. They only modification the car had was the past owner hacked up the OEM Catback to try and make it more sporty. The added aftermarket mufflers and removed the resonators.

Here is what we’re working with. A 2007 S6 5.2 V10 with 75,000 miles. No recent carbon clean, no recent maintenance noting more than just putting gas in the car and making sure the usual thing were checked like air in the tires, oil, coolant etc etc.

http://audirevolution.net/addons/albums/images/92741359.jpg

RESULTS OF STOCK S6 1/4 MILE TEST -

The results were as expected. So far it seems very consistent that these cars are 14 second 1/4 mile cars and this one was no different. Keeping in mind that this car had zero maintenance work done before going to the track things like intake spacers, carbon clean might have helped but it looks like this is the average. Also keep in mind it was 87 degrees out and this car was on 91 octane. From the looks of it the hacked up Catback didn’t do anything to help performance. I can’t see that it hurt the performance of the car but overall it just seemed to make the car louder. A proper exhaust will get tested here in the next few weeks. As there are plans on taking the car to the track to see how the JHM 2.75" exhaust performs

http://audirevolution.net/addons/albums/images/805074919.jpg

The game plan was to inspect the intake manifold, pull the injectors and get them cleaned, look over the rest of the car install the tune and intake spacers and take the car to the track.

Track days and testing is very Wednesday So, I’ll update this thread later today with the track results of the Wednesday results.

The car’s next trip to the drag strip will have the car inspected, JHM intake spacers installed and the JHM tune installed. So, we will see just how much acceleration the car will pick up.

#11

Very interested in the results Its great to see jhm testing each step of the way. We have seen your thread and the great gains you got with your setup. All this track testing really is helping show where these cars really are and where they can go with the right mods.

#12

A few set backs with project S6.

As many of you already know carbon is an issue. Project S6 did have carbon but it didn’t look very bad. So the track results probably were not greatly affected by the carbon.

On the inspection at JHM, they found in the logs that one or more of the injectors was working overtime to keep up. The car had enough fuel and the AFR was where it was supposed to be but they wanted to send the injectors out to get tested and cleaned. I will post the results of the injector testing and the cleaning results when they are available.

Still, that didn’t stop the project S6. With project S6 down for maintenance, we were in need of a replacement. Lucky for us JHM had several S6 V10 cars at the shop. So, one of our very own members stepped up and asked to have his car trade spots with the project S6 car and to run his car at the track.

So, with the fill in S6 all set we get JHM tuned results.

The mod list on the fill in S6 was the same as it was going to be for project S6. Just the JHM intake spacers, crank pulley and a tune. A carbon clean had been done and from the testing, it looked like there were no issues with the injectors so with a clean bill of health and a fresh set of intake spacers and the JHM tune off to the track they went

The results for just the JHM tune, crank pulley and intake spacers -

http://audirevolution.net/addons/albums/images/920977672.jpg

Not bad for just a tune, crank pulley and spacers. These results back up the prior results we saw from the other JHM tuned cars. So far the 13.5 at almost 104 seems to be the trend. Most JHM tuned cars are picking up over 4 tenths of a second and about 4 mph. That’s a nice improvement for just a tune and intake spacers.

#13

Another track day is planed for this Wednesday .

This time same mods as above but with the addition of the JHM 2.75" Catback

http://audirevolution.net/addons/albums/images/709158183.jpg

The exhaust systems really help wake these cars up and since we know the S6 has a big disadvantage with the stock exhaust the JHM 2.75" exhaust really shines.

It was interesting to note that in exhaust testing when they removed the JHM tune the gains from the exhaust were almost all gone. Some of the pep was still there but it looks like the JHM Tune really likes the extra flow ability of the free flowing 2.75" exhaust.

I suppose tomorrow night we’ll see just how much the combo works.

#14

hold up.
YOur s8 shaved a FULL SECOND off the quarter from just the JHM tune??! stock exhaust?
on an n/a car that is amazing…wow.
that should be well over 500 crank horse to do that no?

#15

no, his S8 shaved a full second and added 7 or 8 MPH of trap speed, with a few other mods including exhaust.

There is a member who went 13.5 with just a JHM tune though on his S6 as well as a crank pulley (shaves a few pounds of rotating weight) and intake spacers (no real performance gains with those, but just makes the car better able to maintain performance levels).

#16

I’m hardly an expert, but from what I understand, the intake spacers actually do increase performance. (By how much, I don’t know, but it’s not zero)

Think of it this way - by the time the engine warms up enough to be performing at peak levels, the manifold is already heat-soaked. So without the spacers, there is never really a time when the engine is both warm enough to be running well, AND the manifold is cool enough to to be delivering the temperature air the engine needs to really run well.

There’s also some talk about the spacers improving the airflow or some such thing, but I don’t know how much difference that really makes - the real magic lies in their ability to get a properly-warmed engine to breathe properly-cool air, which just isn’t possible without them.

#17

My S6 picked up a full second with the JHM tune, Catback, intake spacers, Crank pulley, and rotors. The stock cats and down pipes were in the car. I’m trying to decide on pulling the motor to make headers for my car or not.

#18

Coming off the solid results of the JHM tune it was time to take the car back to the track but this time the car was going to be equipt with the JHM 2.75" performance Catback exhaust.

I want to mention again, that the Catback makes a big difference on the car but, in testing, it showed that if you put the JHM Catback system on the car without the JHM tune the ECU will only give you so much power.

These V10 cars are very detuned from the factory and it shows. If you try to add parts that should allow the car to make more power the ECU will just cut the power further. However, add the JHM Catback and JHM ECU tune together and the results are amazing.

See for yourself.

http://audirevolution.net/addons/albums/images/253364724.jpg

#19

You saw that right. A short list of JHM parts really wakes up these cars. This just backs up my results from my S8 so, It’s clear that the performance gap between the S8 and S6 can be easily erased by adding just a few JHM parts.

The stock S6 went 14.2@ 98 mph
The JHM mod S6 went 13.0@ 106

That’s over a second faster and 8mph faster in just a quarter mile .

I think there is a good chance with a few more of the JHM bolt on parts the project S6 could actually be in the 12s. Now that’s something to be really excited about.

There is one more trip to the track planned for next Wednesday. The car is going to get a set of the JHM LW Rotors. Will that be enough to break the 12-second range for these cars?

After these cars being out now for almost 10 years and the utter lack of any kind of performance. It looks like the S6 V10 might be finally hitting it’s stride into the performance category and a little recognition for being an actual sports car.

#20

it’s zero for the purposes of discussion