Originally Posted by
Christian and Beccy
Bottom line is that the standard manifold is the best bet for 95% of RS Turbo's that exist. Virtually NO-ONE has enough power to be worried about the manifold. Then you don't need to be concerned with machining flange faces flat and so on, because the standard one is just fine.
Also, the GRS Intercooler has been proven time and time again. I did 350bhp and 172mph with one, what more evidence is needed?
but didn't your rst have a very aggressive torque spike/power delivery when you did 350bhp/172mph? great figures etc but surely if you had a bit more flow with the inlet and exhuast the powerband and boost coiuld have been more progressive and therefore more useable?
wot I'm saying is surely having a slightly less restrictive manifold will give results even if there not in peak bhp/torque figures ie pub talk?
I mean an RST with 230bhp+ rst needs all the help it can get with regards to driveability/useability if still running the 1600.