Project white wagon. Stage 1 JHM supercharger

With the success of the JHM Stage 1 supercharger kit, it’s no surprise that we have several threads on JHM stage 1 kits and installs. I figured why not add another? Before you think this is just another run of the mill stage 1 kit, let me stop you and mention (apparently, this is important I don’t know why) it’s not just an S4, its a wagon and it’s white. As if that wasn’t enough it’s an automatic.

I know what you’re thinking, why would someone want to hot rod an automatic? To that, I would say, hey now. Automatics are not that bad anymore. Before you prejudge have a look at this.

https://www.youtube.com/watch?v=aFWMx5-N7yE

Not bad when you consider that the JHM stage 1 kits for the B6 and B7 cars have to cut power at about 6200 rpm to help keep the motor safe. If this was an RS4 or S5 the cars would be even faster. Still, this is stout performance for an automatic S4.

This thread will go over the deep modifications added to the B7 wagon and all of the things we ran into over the way.

Before we get too far in lets have a look at the car.

http://audirevolution.net/addons/albums/images/127871154.jpg

http://audirevolution.net/addons/albums/images/868668141.jpg

http://audirevolution.net/addons/albums/images/49786579.jpg

Because we all know wet cars look better. I wanted to get a few pictures of the car wet.

Next up we cover getting the car and getting it back home for the inspection.

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Subscribed, will be keeping tabs on your build, will this be the first JHM Stage 1 Supercharger wagon?

No. Axel has had the stage1 on his Avant for ~ 5 years.

Damn zf 6hp owners… :wink:

No, there have been several of them over the years, in all forms both in automatic and manual.

Axel was one of the first 12 customers to get the kit. I have always enjoyed working with him over the years.

The 6hp is one of the first real good transmissions for these cars. The transmission was the reason this S4 was bought and built over his V8 S6 with the 5 speed that he sold in favor of the 6hp S4.

As I mentioned, the project had some very strong requirements.

  1. It had to be white
  2. It had to be an Audi
  3. It had to be an automatic
  4. It had to be able to get into the 11s (stage 1)
  5. It had to be able to get into the low 11s or high 10s (Stage 2+)
  6. It had to be fun, safe, fast and stable. Able to also carry children around without needing ear muffs to keep the noise down.
  7. It had to be reliable in all climates.

The power part was easy. The JHM stage 1 will put you into the 11s and has a long list of doing that on even the crappiest of fuels California 91 being at the top of the list.

The car was a little harder. Trying to find a white wagon was not very easy. I actually found almost the exact car the project was looking for. I found a supercharged white wagon but, It was a manual. So, that made it a no go. I know that might be hard for some of you to believe but it had to be automatic.

After weeks of searching, I found one, located on the east coast. I made the deal bought the car for the project and decided that it would be smart to drive the car back to Detroit rather than shipping it. This way we could find out all the bugs before we started to tear the car apart fo the project.

The long drive home showed your usual bugs that you might see on a car with over 100k. If you’re not too up to speed with the S4 and maintenance issues and you have nothing better to do for the next few hours here is some light reading. http://audirevolution.net/forum/index.php?topic=3359.0

Before we tore into the project we decided to do the staple tests and maintenance that you like to see.

http://audirevolution.net/addons/albums/images/800687565.jpg

We pulled the air box out saw the OEM filter was at the end of its life, checked the oil to see it was about a quart or two down, but that’s expected as we drove mostly highway on the way back.

The car felt a little down on power with some slight misfires detected on the vag-com. We pulled the coil packs.

http://audirevolution.net/addons/albums/images/248373402.jpg

Sure enough, the coil packs were almost older than the car. Several of them seemed to be original and never changed in the cars over 100k life. 2 of the coil packs were almost as old but had been changed a few years later. Still, WAY off of what the current coil pack version is at.

http://audirevolution.net/addons/albums/images/96841027.jpg

If you don’t know the current part number for the latest revision of the coil packs. Here is it. Also, if you don’t know where the build date is on the coil packs. Look in the lower right-hand corner. You will see the date

http://audirevolution.net/addons/albums/images/978811240.jpg

After we got all new coil packs installed, we took the car out for another round of logs and inspection. We kept the still OEM stock plugs in the car (still factory, never replaced) You could tell the plugs were ready to be changed but (this will happen with the SC install) for the sake of inspection they were fine and the car felt much better with the new coil packs.

So, on to the compression test.

http://audirevolution.net/addons/albums/images/530786991.jpg

The results showed pretty well. After a clean bill of health, it was on to fluid inspection.

who is this for?

CountVohn,

Do you happen to know your way around INCA? I have a really simple task (switching calibration from one ECM to another) but not sure how to do it. Not many people know this software so I figured I’d ask (and I’m not allowed to view your profile for some reason)!

Thanks and likewise :slight_smile:

The install month was November 2011 so 5 years and 3 months now. Wish I could go to Stage 2 but the exchange rate isn’t in my favour. Maybe in a few years I’ll go straight to Stage 3 if it ever becomes available haha.

As usual, a Canadian guy. Canada rocks.

Send me a PM. As long as what you’re needing isn’t a conflict of interest with any of the people I currently support I will help. If not I’m sure I can point you in the right direction.

5 years, not too bad. When the exchange rate adjusts jump on stage 2. It’s a great upgrade and after all these years I think you’ll enjoy the extra hp.

Cant wait to see more !!!

I have a weakness for white wagons

I just realized that last week I responded but never gave the next update. So, here it goes.

After we got a clean bill of health on the car it was time to take on the project. The overall concept was the customer needed a wagon and he needed an automatic. He loves the V8 sound but needed closer to supercar acceleration with a great area under the curve. We talked and came up with realistic goals.

The outline was, Super car acceleration, uncompromising ability to be daily driven and not just daily driven, but the ability to get in the car and drive across the country if one wanted to, that kind of drive ability and reliability. The car had to be fun, fast but real day driven fast with a real area under the curve. A power curve where at any RPM point the car would have lots of reserve power where the car would pull just as hard in the 2000rpm range as in the upper 4500rpm range. All this and the car and the motor had to stay in good shape.

So, we came up with the already great working blueprint of the JHM stage 1 Supercharger, JHM Headers with a custom 2.75" Catback exhaust system The kit adds well over a 100whp on its own add the headers and the monster catback and you’re well into the mid 450whp range. The goal was lower 12-second 1/4 mile. The great part of the JHM supercharger kit is that it can be now expanded to the stage 1+ kit with an intercooler and a little more boost and once the customer is ready for a built motor and a stage 2 upgrade you’re now in the over 500whp range and well into the 11-second 1/4 mile range.

With a solid game plan and a good solid report card from the compression test and general inspection, it was time to tear into the car and see what everything looked like behind the scenes.

http://audirevolution.net/addons/albums/images/830506091.jpg

Up the car went and what should have been an easy tear down quickly revealed some issues along the way. The car had an aftermarket exhaust that had been welded on for whatever reason and the hangers were bent and re-welded on. We couldn’t make out any reason why this needed to happen but it took about four times as long to remove the exhaust system.

http://audirevolution.net/addons/albums/images/427782798.jpg

Next, we tackled getting the front end off. We were happy to see a bit of low drama here. Nothing hidden here or issues here. The snub mount all but disintegrated once we pulled off the front core support, other than that this was not bad for a car with over 100k on it.

At first, we not sure if the valve cover gaskets were original. Given the condition of the gaskets and the amount of collection on the heads we felt it was incredibly unlikely. What through us for a loop was the fact that the car still had almost all of the original coil packs and spark plugs. On further review, we noticed that the valve cover gaskets had to have been replaced. As it looked like a few of the valve cover bolts were missing and they were haphazardly replaced.

http://audirevolution.net/addons/albums/images/57034958.jpg

As expected some of the hoses and lines were cracked or just worn out we put those on the list of things to get replaced. The Downpipes were shot the flex joints were destroyed with no chance of saving them. This wasn’t a concern given that the headers will replace this section.

http://audirevolution.net/addons/albums/images/947851385.jpg

With the motor out, it was time to call it a day. We felt it would be best coming back after a few days of rest to make the list of needed replacement parts and a deeper inspection to see what else might be hiding.

Looking good CV! Love white audis

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Was it the one in NJ with 2 sets of stock wheels? The RS4 18s may have been replicas. I was actually looking to purchase that car if it was a manual. I believe the seller also is selling his Misano Red RS4 w/ Ti Package. His for sale ad on the RS4 is a bit sketchy be it as though he has 2 accidents both involving deers and stated a deer :deer: rear ended on 1 of the accidents, lol. But most have forgotten he actually acknowledged the previous owner having a rear end collision in his RS4 intro post. The also should be ashamed of that dusty @$$ RS4 engine bay. But did the S4 check out like he said? He had so many inconsistent stories with the RS4, that I thought to stay away. Anyways, good luck with the build.

https://uploads.tapatalk-cdn.com/20170226/1404cf87ec3f7c24f77881a009c133a2.jpg

The 18" RS4 style wheel (‘7 double spoke’ is the actual name for the record) was an OEM wheel option on the B7 S4 so they could just be stockers.

The other wheels on the pic you showed (where you screenshotted a horizontal image with your phone vertical, then didn’t crop out the black) are the standard 2007 S4 wheel, and they were called ‘7 twin spoke’.