I was looking into the cosworth intake manifold for my 04 DE, however I have the motordyne 5/16 spacer( which was is nice) mounted already.

If I do this Cosworth, will it pretty much be the same thing as having my oem plenum w/ the 5/16 spacer, or would there be a even better increase?

What else is recommended for optimum airflow?(besides port and polish)

A procharger+valve train set up is gonna happen by this January.



-Borla headers/AAM hi-flow cats/Borla TDE/ Injen CAI/ Motordyne 5/16 plenum spacer/ UR pulleys/ Osirus UpRev by Dave at Function tuned

 

stick with your spacer!!! you will only notice a difference if you go forced induction. So, to answer your question if your n/a stick to your spacer.

 

well I'm N/A for now, but I'm for sure gonna go with the procharger, but I'm just curious if I did the intake manifold now if it would be any better than my current set up,
Thanks for the input though

 

N/A it won't make any more power than what you presently are putting out. If you plan on putting a procharger on your car i would look into it for sure because you will see a good amount of gains in the upper rpm band compared to your spacer. Depending on how soon you plan on supercharging the car you might need to order the manifold soon since its probably on back order. Hope that i could help!!

 

I would worry about saving up for the procharger before even thinking about the cosworth. Sure it looks pretty, but it will do nothing for you while NA.

 

+1 what he said, lol