So they say everthing comes in good time, I evetually got my long awaited volvo s40 T5. I am glad to join in this volvo forum, hello to everybody out there !!!

 

Welcome to the Volvo World!!

The S40 is such a wonderful car. You will love it for ever.

 

Hi
Thankyou for the welcome note. Can you maybe give me some advice on the following :
I was surfing the internet for a proper performance exhaust system for my 2008 Volvo s40 T5 and would like some advice please. Seems that mostly a 76mm (3") downpipe is used and then the rest of the system is reduced to 63mm and the cat is also removed and replaced by a catfooler. I have however came across 2 chaps that said they have experienced boostcontrol problems after installing the 76mm downpipe. Apparently the size of the downpipe helps to control the amount of boost ? I was also advised to do the downpipe and catfooler but to not replace the backbox to keep the backpreassure correct by some others ?
My goal is to get more power and would like some of the forums expertise please.