didnt break any studs lol
definently spools a bit sooner and better throttle response
also way lighter then oem like 1.2kg(2.6lbs)

 

Ok question, why didn't you do yourself a favor and replace the manifold studs since they are all rusty n ****? Get yourself a set of ARP studs and call it a day. They way they don't break next time you have to do this job. Other then that nice job.

 

couldnt be bothered.

 

I'd be curious to see back to back comparisons of the stock manifold vs the FP on your setup. While the FP part is excellent, it has shown time and time again to hurt spool slightly at the gain of a little top end.

 

i didnt dyno it yet but it feels more responsive than before
i also use the evo 9 hybrid turbo invidia o2 housing and invidia downpipe

 

Is there any tuning involved, or should you retune it ?

 

If it were me I would retune it being its designed for more airflow. Any upgrade like that you should always reutne to maximize your setup. Idk if op did or not and its ok if he didn't I don't really think it would make that much of a difference between a stock ported and this mani to be put on and just run.