Poor power delivery low gears and smoking!

Hi, for the past weeks I've been noticing more and more that upto 3rd gear the car is not pulling as hard. My smoke levels are horrendous out the exhaust to. Get it into 4th and it's extremely powerfull and smoke acceptable. It has been a Smokey map all along but the low down power issues annoy me as I commute through Birmingham city center and need the low down power etc. 

It's running a hybrid pd150, miltek decat front mount cooler and egr delete is in the process of being fitted. 

Last rolling road it only made 190 bhp which I was confused about with all supporting mods, my first thoughts are possible maf/air filter issue or maybe injectors? Or most likely map needs re working. 

Has anyone had similar issues? Any help appreciated as I'm losing interest in the car and considering selling everyday now! Which I don't want to do really. I have not vagcom to run logs on unfortunately.

Cheers Olly 

Edited 15 December, 201312 yr by Olly87