Weird prob

[dsmdizzle]

Well I finally got my coupler situation figured out and now I can go full boost, but now some weird stuff. I know that these cars have a short first, but when I go wide open in first from like 5 mph it is like it has no turbo at all til like 5000 then it kicks hard and is boosting. But in second it spools at like 3000 like normal so please explain.

Another problem:

When I do a wot pull in second I get to about 6000 then it cuts out really fast, it freaks me out and I know it isnt fuel-cut because I hear it is more violent. Why does it only do it in second and what is wrong?

My car isnt tuned at all.

 

[somdturbo]

Well first off. You need to tune the car. Its hard to diagnose rpm problems when the car is not tuned at all. With an upgraded fuel system and such and no tuning. My guess is that your car will run like shit.

 

[bmwisthekey]

do a boost leak test if you havent already,do some pulls and post up some logs.