Volker

Hi,

which manifold would be the best choice in terms of overall performance for my (non rs1600i) cvh engine?
specs: 1600cc k-tronic, gas flowed head, K&N, Kent cvh32 cam.
Have an Ashley 4-2-1 but this looks to be quite small and thin (inner diameter primary tubes 34mm), would an original cast-iron RS1600i be the better choice?
Volker

GraphiteGray

iTrader: (1)

Ive always found the Janspeed Manifold and system to be the best for the 1600 CVH, its a bit pricey though but it will go well with the mods you have

paconassa

its the best compared to what???

any bhp figures to sustain what u r saying??

thanks m8

XR2

That depends. RSi Manifold is always a good choice. Bigger diameter isn't always better

GraphiteGray

iTrader: (1)

Ask the majority of RSi owners and they'll go with me on the Janspeed, theres not much to compare really, the Ashley system is the only other system i know that has its own manifold, its a close second to the Janspeed, but the quality of the ashley systems has been pretty poor

Other systems like magnex etc use the original RSi manifold and downpipe which although better than the standard XR3 manfold its still restrictive.

Its not just about bhp, its about allowing the engine to run smoother and better with a more freeflowing exhaust, also your looking for good quality, something that'll last and not rot out after a year or so, the Janspeed has these qualities