Hawkeye sti ppp, with sportcat or not?
 

Hi everyone. I have just fitted a hawkeye sti engine with ppp to my bugeye. I have also fitted a standard sti downpipe with prodrive backbox. Do I also need the prodrive downpipe with sportcat? I don't want to damage the engine. Thanx

I don't think the downpipe was changed on a hawkeye sti ppp conversion,

No but the MY06 DP flowed better than pre MY06 DP's, as well as being shorter as an individual part. Combined with the second cat pipe of the same year it became the same length as previous DP/second cat pipes.