Hi i just installed a 50 trim turbo and a full 2.5 inch race exhaust on my 98 a4 1.8t quattro. My question is does n e one know what ems i can use to get it tuned. the problem is that once the turbo starts to spool the fuel systems unloads and the car starts stuttering. Ive called APR and they basically told me that they cant help me bc i dont have n e APR products on my car. So can anyone point me in the right direction.

 

You need a tune specific to that turbo's flow characteristics. What turbo is it? A 50-trim T3? a 50-trim 2871r? What other mods are in the car? Did you re-gap the plugs? Did you do any research at all on what to do when upgrading the car, such as using the search feature or the sticky post at the top of every page of this forum titled "FAQ"?