I did about 70% of mine yesterday. I just went to autozone and bought a roll of black line and a ton of Y fittings. I think it cost me about 20$ foreverything and OMG.... Doesnt even drive like the same car. It killed almost all of the vibrations and I can hear my engine revving now, not just my car rattling.... It runs so much smoother. As far as performance goes top end is almost the same, but It feels like it pulls harder on low end. Im going to finish it up tonight. If you havent done it, I reccomend you do, those hard plastic lines can break very easily, in fact.. My car had one snapped right in half and I didnt even suspect it.

 

Amazing how much air can leak thru old Y and X fittings. They get brittle and loose.
It is about the best 20$ you can spend on parts.

 

Best and cheapest performance "upgrade" you can get for these cars.

 

How hard is it to replace all the old vacuum lines and fittings though, it looks messy!!

 

its not a nice job

 

NA's are easy, Turbos are more difficult.

 

Call me a nerdy, but I've started doing mine with yellow silicone hose so they stand out in the dim engine bay. I've also colour coded each end and the middle of each line with electrical tape to match the vacuum diagram that has been posted here a few times (Lindsey's ?)

 

S2 is much harder then a 8V N/A...

 

I can't wait until I do mine. It is on my list of things to do this summer.

 

what did you do about the pre formed ones under the intake manifold? all of mine are rotten. i think i have matched ones from local auto parts stores well enough but i haven't put them on yet. the intake is still off the car.

 

Can some here list how much hose to get what sizes and how long...also how many metal connectors and sizes so I can go to Autozone and do the same.. I'm thinkg red hoses anyone have pics of this before I get em.

 

Can some here list how much hose to get what sizes and how long...also how many metal connectors and sizes so I can go to Autozone and do the same.. I'm thinkg red hoses anyone have pics of this before I get em.

 

just number and draw a diagragm of your old hoses and take them with you to the store.
jay

 

Yeah, in case no one has bothered to look, there is a diagram of the hoses on the passenger side of the engine bay near the power steering reservoir.

Measure the hose lengths for the actual hoses, buy the 3 or so T connectors when you are at the store buying the length of hose you need, and then replace each hose and connector one at a time so you don't mess anything up. It's a lot like replacing spark plug wires.

On an N/A, this job has a difficulty level of 2. 1 being washing your car, and 10 being rebuilding your motor or transmission.

 

Can someone post the Vacuum Diagram for the 944 NA