Sorry this is an old thread but I have a T190 and having a few issues too. It has poor idle, and stalls alot. I also have a boost issue and wondering where I should start looking? I have a new maf to go on but the Amal is shot and car running direct ATM. Other sensors are 2 bar map as on T230 and ACT sensor. Strangely though, I'm running a decat and no EML. Unplugging sensors including lambda don't even bring EML on.