1slowhatch
Proven Member
- 172
- 2
- Mar 5, 2014
-
Reno,
Nevada
Now I am having another problem (with my '97 Talon TSI AWD Auto- stock aside from boost controller, free mods) I seem to have fixed all the boost leaks (used boost leak tester to 20psi). The car still feels slow. Took it to the track (high elevation, lots of heat) and it ran terrible. I couldn't get it to build any boost at the line, so it was running mid 16's at 83? mph? I do have a boost controller on it, tried turning it up, but didn't seem to help. I put a boost gauge on it. Now, it seems like the boost is very erratic. It takes 3 or 4 seconds to build any boost foot braking it, will spike to 18, then fall to 13 or 14. Part throttle you'll see 15+. Very slow to pull out into traffic etc. The mileage is also terrible (around 9 mpg). There are no CEL codes. The only thing I can think of is maybe the ECU is pulling a bunch of timing? You can feel it slow and speed up, sometimes feel like you're hitting a wall, even though the boost gauge shows 15+psi. Heat soak??? Bad turbo?? (does have some in and out, and side to side play). Partially plugged cat?? Also, I only have 91 octane available.The engine runs very well otherwise, idles smooth, no overheating problems, no serious boost leaks, etc.