mmazerolle

Hi group,

I am looking into my next upgrade for my 2001 TT Coupe 225HP. This is my track car and i am very slowly doing changes to it. I do the simple mechanics myself (like brakes, suspension, interior and body work) but never got to play close to the engine yet. I usually leave that to my mechanic.

I started by upgrading brakes and changing the suspension. I feel that the first upgrades should try to make the car stop and stay on the road. It would be stupid to get the car going faster if it can't stay on the road

Now that it's done, I am looking at changing the cold air intake. I was told it's a DIY projet that is not too complicated. I've look at the installation instructions and they are manageable but... a friend told me that when you change the cold air intake you have to adjust the spark plugs. Is that true ? What does that entails ?

Thanks in advance,

AudiFan

cheeba

You do not need different plugs for a CAI. Going 1 heat range colder on a chipped car is a good idea, though. Also, a CAI isn't going to net you much power - maybe 1-2HP, if anything.

My recommendations for modding:

- Tire are most important mod to any vehicle; choose them accordingly.
- Since you've done the suspension and brakes, get a stiffer rear anti-sway - it really takes a bite out of the horrible stock understeer.
- Get a chip!
- DP/exhaust is good, but doesn't offer the same bang-for-buck that a chip does.

If you're lowered more than maybe 3/4", and you want to get your suspension sorted, you'll need adjustable rear control arms (or bushings) to bring your rear camber/toe into good settings. I also recommend upgraded bushings in the suspension/steering components. I have some poly and some spherical bearings. Then get an alignment done with performance specs at a shop that knows what they're doing - good luck finding one! Getting your suspension completely sorted will transform the stock bloated, understeering barge, into a sharp, neutral car with great turn-in.

If you don't care about getting picky with the performance, a rear anti-sway is the best $200 you can spend on a TT. A chip is nearly a no-brainer as well...

What brakes/suspension did you get?

mmazerolle

Thanks for the info.

For suspension i installed Koni Sport Adjustable Shocks and Eibach coils lowering the car by about 1/2 inch. Brakes are stock calipers with Hawks Blue pads for the track.

I only change one item at a time before getting to a track event so i can see the difference in handling and performance. Since suspension was done last winter so ill do the track event on May 10th in Calabogie to see the improvement. Then, the air intake goes in. I already ordered it and i have it on the shelve waiting.

AudiFan