13-12-2012, 11:30 AM
300bhp is entirely possible on the HDi. Its all about injectors though.
Personally I dont entirely think finding injectors to suit the HDi is the way forward. For 300bhp youll need rods and pistons so why not get a different combustion chamber machined in the new pistons and use something cheap and easy to get hold of (like uprated VAG injectors)
Also what Dave said about 20 posts back about you not knowing if its port size thats holding it back and maybe making it undrivable is silly. You cant run double the stock airflow through stock ports without it being a slight restriction unless peugeot made them ridiculously over sized to start with which would of made the car undriveable at very low revs.
As the only person here to of had a professionally ported head and manifolds on a HDi i can tell you that it dosent affect low down drivability in any particularly noticeable way.
Personally I dont entirely think finding injectors to suit the HDi is the way forward. For 300bhp youll need rods and pistons so why not get a different combustion chamber machined in the new pistons and use something cheap and easy to get hold of (like uprated VAG injectors)
Also what Dave said about 20 posts back about you not knowing if its port size thats holding it back and maybe making it undrivable is silly. You cant run double the stock airflow through stock ports without it being a slight restriction unless peugeot made them ridiculously over sized to start with which would of made the car undriveable at very low revs.
As the only person here to of had a professionally ported head and manifolds on a HDi i can tell you that it dosent affect low down drivability in any particularly noticeable way.