Nothing was wrong with the old one tbh, but a mate gave the new one to me and I though id give it a go.
It does seems to run smother when it comes on boost with the new one??.
Think I will swap it back to the old one lol.
When you say take the jets out im guessing thats the white plastic restricters in the pipe. ??
The thing is im getting it setup on tues so not sure if I should leave the new one on and get him to sort the boost. ????? hmmm