does anyone know the reason why my uk300 with ppp wont run well with my full decat system on? any info would be of great help. j

 

Erm, not really when you've given us precisely zero useful information.

What do you mean by it not "running well"? Is it simply not very fast, are you getting a Check Engine light, is it cutting out under full throttle, what?

 

You might find its suffering with over boost. it may need the turbo restrictor taking down a size. have had this before as the exhaust is running freely now,turbo running up too quick for the restrictor to cope with.

 

The UK 300 uses EOBD system how did you get around the air fuel sensor the one that monitors the cats efficiency .If you just stuck it into a decat system its no surprise the car wont run right .

 

i was looking at changing my downpipe on my uk300. having spoken to tsl for some advice they advised against it, they leave front cat for turbo backpressure. in the end went for tsl centre de cat with firetstorm.
tsl no 01159377200.