225 bhp tt coupe loss or power,rough idle,petrol smell inside cabin and missfire both upon hard acceleration plz help!!!

[oovoksey]

hi guys,this is my first post and im in desperate need of some advice.i have a audi tt 225 coupe engine apx,after having the car remapped things started to go pear shaped,after remap the car was boosting to about 1.8 bar i was told by pendle performance who did it the program was for 270 bhp,after a couple of weeks it started not holding boost and dropping off,now it only bosts to about 1.3 but the wierd thing is sometimes in 5th and 6th gear after flooring it i can get abit more,so in a nut shell ive lost a lot of power,i changed the d v valve to a forge oo7 split r valve but it did nothing,also it idles quite rough ive put a new maf on it aswell,again nothing still the same,another thing is there is a strong smell of petrol in the cabin but only when u floor the car,and last week it has developed a missfire,its really random as it doesnt do it all the time but its always when u accelerate hard so when its on full boost,my temp sensor is faulty but this all started way before the temp sensor was playing up,is there a possibility it could be to do with the 02 sensor? im hoping this is all related to 1 problem ANY HELP MUCH APPRECIATED GUYS PLZ HELP

[sr-performance]

Hi mate, have a diagnostic done on your car and dependant on what you find, you can always ask pendle to put your std map back on after to see if it is that?