Shortly before I purchased the car, I joined audizine and started researching potential mods. I started scrounging for parts and since I don't like to do work twice, I waited until I picked up what I needed for an intercooler upgrade and a methanol install. I had a few tricks up my sleeve and was eager to see if I could pull them off. Over about 2 months, I acquired:
-a replacement RS style grille and fog light surrounds,
-a boost tap,
-a throttle body spacer with a threaded tap,
-a used Alu Kruez,
-an ECS tuning upper intake hose,
-a Treadstone TR8 intercooler and associated silicone hoses, clamps, and reducers (thanks @Lettuce for that thorough explanation in your post,
https://www.audizine.com/forum/showt...1#post11043526),
-and a Snow methanol kit. I waited for everything to come in before yanking the front bumper for installation.
My friend and I pulled the front bumper off. While I worked on pulling the stock IC, he pulled the OEM grilles and installed the replacements. After getting the IC off we mocked up the new one. The size difference is nothing to sneeze at.
Here's one of those love-it-or-hate-it things. Following my desire to be unassuming, I painted the front of the IC black. I know there are those that will want to debate the laws of thermodynamics and heat transfer, and that people are on both sides of the fence about this, but once again, I'm going to do me, so I painted it, along with the front bumper reinforcement. Prior to selling the M3, I removed the Laser Interceptor I installed. Of course it had to be reinstalled in the Audi. Using a couple polycarbonate spacers, they screwed right in, and the diode peeps out on each side w/out obstruction.
Before anyone says anything about them not being mounted horizontally, they are the BMW specific unit designed to mount vertically in the BMW grilles. When I had it on the M3, that one mod saved me more $$$ than I could count. I ran it in conjunction with a V1, which I'm planning for a pretty clean install in the not-too-distant future. I spent a little time and did some routing so you can't see the wires, so it all worked out.
After getting the necessary holes drilled in the reinforcement bar, we got the TR8 IC bolted into place and drilled out one of the silicone hoses for the nozzle plate for the meth nozzle. All the clamps were tightened down and we were in business!
As for the methanol kit, I originally ordered a Snow Stage II kit
https://www.snowperformance.net/Stag...-p/sno-212.htm (p/n SNO-212) from Amazon for a little under $400. Fast forward to when I got the kit, and I was instead sent a SNO-410 (
https://www.snowperformance.net/6-7-...-p/sno-410.htm) dual nozzle diesel kit, complete with a 7 gallon methanol tank and the VC-50 boost gauge/meth controller!
I sent a message to the seller via Amazon and let them know about the mix-up in the event they wanted me to send the kit back given the huge price difference, but they never responded. Oh well. I ordered the smaller reservoir w/the low level sensor from eBay, and a 60 ml/min (SNO-40600) nozzle and black methanol hose from Amazon.
Taking a cue from @ddun and his thread (
https://www.audizine.com/forum/showt...Meth-anonymous), we installed the tank and the pump under the windshield cowl.
The pump fits nicely under the tank and the solenoid slid in place behind the firewall heat shielding. The main hose w/the 175 ml/min nozzle runs down to the intercooler for IAT cooling, and the 60 ml/min nozzle runs to the throttle body spacer. There's a bracket that I bent slightly so that I could position the nozzle @ the 9 o'clock position. I then covered all visible methanol tubing w/wire loom so unless you really know what the engine bay looks like, you won't notice anything out of the ordinary.
Bringing the boost line and wiring into the cabin was my next task, and I can thank @phillips2024 and his write up (
https://www.audizine.com/forum/showt...S4-DIY-Install) for helping me get this done as easily as possible.
After that was accomplished, it was time to get the gauge installed. Shortly after I purchased the car, I picked up a spare ashtray assembly from a member here. My initial plans were to install my Valentine1 remote units in here, as well as the power switch + mode switches for the LI, as the Snow kit I purchased didn't contain the VC-50 gauge. Since this mixup contained the VC-50, after I received it, I had a sneaking suspicion that it'd fit in the ashtray, along w/the switches for the LI. It took me about 6 hrs with the Rotozip (and the ruining of one of the ashtrays), but I was right, and everything fit accordingly.
Awesome that I can leave the car, shut the ashtray, and no one is any the wiser. I connected all the wiring, mounting the brain for the LI in an open slot under the dash.
I also installed an OBDII splitter so that I have 3 OBDII ports available for use: one for my BT adapter for Carista, 1 for another project I'm entertaining, and the last for regular OBDII utilization.
All the extra wiring was then velcroed together, and I ran the wiring from the LI brain to the speaker I mounted in the headliner.
I finished up around 5 in the am, and took it out in the morning, intending to take it to work. There were no boost leaks, which I was really pleased about, especially considering all of the potential spots where that could have happened. It did, however, stumble out of the driveway and up the street, and the methanol wasn't turned on, which had me worried. Almost as if it wasn't boosting. I backed it up, almost leaving it to tinker around with it after work, but I decided to give it a shakedown run before I parked it. Coming from BMW and having to deal with the ECU having to adapt, I'm embarrassed to admit that I didn't consider this as an option, b/c after I drove it up the street and on the freeway, it didn't experience any problems, so I drove it to work with no issues.
Shortly after all of this, on a trip to Dallas with the S.O., the car flashed a code for a split second when it stumbled. After arriving @ our destination, and attempting to start the car a couple hours later, it wouldn't turn over. I attempted to turn it over for 30 minutes, and it finally started. It was sluggish at first, then straightened out. A couple weeks later, I attempted to leave work to get to the gym, and went through the starting debacle again. After doing some research, I determined that I had an injector stuck open. FCPEuro to the rescue. Lifetime replacement on failed parts? Yessir!
Thanks to the tutorial by @Dan_Q (
https://www.audizine.com/forum/showt...ight=manifold) and one I found on Youtube, I got the manifold free from the engine....
...and the old injectors off.
The throttle body was spotless, btw.
After replacing the injectors and buttoning it all up, it was time for an oil change to get rid of the contaminated oil.
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