which ones to choose
cheap japspeed
kakumei, average price but are they any good
lateral performance, same as rcm or so i was told
or the daddy rcm ones ,but are they worth the extra ££££££££££
car only used at the w/e and will only ever get to about 400 bhp,not a millionaire either so what is best for my requirement ?
all help appreciated

 

Get your OE ones ported if your not going over 400.

 

As above.Ported OEM headers and up pipe.You WILL notice the difference.
PM Harvey

 

cheers, i will do

 

i have ported headers that i will be putting on soon, does it make much difference having a ported uppipe, i only have the standard one

 

Theoretically, the smoother porting promotes more laminer - therefore faster - airflow, meaning the turbo spools quicker when applying the throttle.

Should make the turbo spin-up at least 200+ rpm earlier.

 

i phrased that wrongly. i meant i have bought some ported headers but i dont have the ported up pipe, do you need to run both together to get an advantage or will ported headers work well with a standard up pipe?

 

Headers on their own are prob the most important in getting the gases out of the engine and flowing well... but a ported up-pipe can only aid this process further.

If you haven't fitted the headers yet, then I'd defo get it done...

 

how much are you looking at for ported OE headers ?

 

harvey sells them.