PROJECT MK4 2001 JETTA 1.8T

BMC CDA Intake and Neuspeed Turbo Inlet Pipe
-
After a lot of research i decided to get rid of my K&N and get a cold air intake kit. There are quite a few on the market now (18turbo.com - Intakes) but I ultimately went with the BMC CDA (Carbon Dynamic Airbox) due to proven dyno results. I got the intake from Adrenalin Motorsports, many thanks goes out to Ami for getting the kit to me asap, the cost is $229 for the entire kit. This includes the breather filter, large duct tubing to route cool air and the filter of course. The Neuspeed Turbo Inlet pipe was a gift from my wonderful girlfriend for valentines day!! From the picture above it is quite noticeable why this part is a must. The stock part is soooo thin, the Neuspeed pipe is much larger and flows 70% better according to Neuspeed, I got the part from 1552 Design for $199, I've got to thank John for helping me out since I tried to order it from a few other places and they told me it was on back order but somehow John got me one direct from Neuspeed!!

Impressions
-
I installed the parts at the same time.  At first it felt as if my car was slower!!  Over the next few days the engine got stronger though.  I guess the ecu had to adjust for something.  NOW the car feels much much smoother than before.  Not nearly as jerky as it was with the stock intake system.  The turbo spools up a lot faster now and I can really here my diverter now too!!  Is it worth it, MOST definately.  With an exhaust system this setup would be even better I am sure.

Installation
- Neuspeed Turbo Inlet -
1. Remove stock airbox, first remove the 3 10mm bolts at the top, front, and side of box.  Then remove the clamp at the MAF.  Unscrew the 2 screws holding down the top of the box and remove the top.  Then remove the breather hose that connects to the bottom of the airbox. Remove the airbox from the car.

2. Jack up car, always use jack stands.
3. Get underneath the car and locate the inlet pipe.

4. Remove the 5mm allen bolt and small hose from the inlet pipe
5. Get above engine again and remove the 8mm allen bolt holding the black coolant line bracket to the cylinder head.  This must be removed to allow the inlet pipe to be removed.

6. Still above engine remove various hoses going to rubber intake pipe, this includes the diverter, see pic, make sure you have reusable hose clamps to replace annoying VW clamps!!

7. You can now remove the the inlet pipe from the turbo. I used a flat screw driver from underneath the car to pry it off the turbo. I actually bent my screwdriver doing this!!  Once you've pried as much as you can get above the car again and pop it off the turbo. This may not be very easy to do, just work wih it a little and be patient! Once off the turbo it might be tough to get out from behind the engine. Try to pull back the coolant line and remove the inlet pipe at the same time.
8. With the inlet pipe and boot off, you have to remove the inlet pipe from the boot.  To do this try to pry it off, look at this pic before you start prying. It will not be easy to remove due to o-ring inside.

9. Once removed installation is reverse of removal, i used a hammer to put inlet back on boot simply tapping the lip down. Be sure to install the new pipe the right direction, and dont forget to put the metal clip back on as well. I also used a hammer and a wooden rod to get the inlet pipe back on the turbo. Dont forget to attach all the hoses to the intake boot.  

Installation
- BMC CDA Intake -
1. With the stock airbox removed, remove the MAF from the airbox unscrewing 2 screws.
2. Attach MAF to CDA using sleeve and clamps supplied, be sure to orient MAF plug correctly.

3. With MAF attached connect to intake boot on engine. Do NOT clamp it yet.  At this time see how much of the metal strip you will need to mount the CDA.  Cut the strip to the amount that you need and attach it to the CDA strap.

4. Depending how you would like to run your cool air tube.  I decided to simply run it to the stock area next to the battery and headlight.  Roughly figure out how much tube you need and cut it to length.  Place the tube in the spot where you want it and place clamp over end.
5. Now you are ready to install the CDA. First attach the cool air tube to the CDA, next attach the MAF side and tighten all clamps. Lastly attach the metal strip to the 10mm bolt.
6. Insert breather filter into plastic tube, and restrain using a zip tie.  The breather filter will just slide right in for a snug fit, no clamps needed.  Plug your MAF back in and go test drive!!!