Phelum question

[Sentric dancer]

hi guys,

Just wanted to ask you guys what is the best Aftermarket phelum for my needs.

This is what iam looking for, a aftermarket phelum with LONG runners or retains stock runners. This is because i dont want to lose Off-boost drivability.

I was looking at a Greddy phelum, but they have short runners which is not ideal for the type of engine iam wanting to create.

Iam currently very interested in a SUB-ZERO phelum, could somebody tell me if it has short of long runners or keeps the stock ones??

Or if anybody can recommend me good ones

Thanks guys!

btw. this is for RB25det

[ylwgtr2]

what engine is the P.L.E.N.U.M for?

[Sentric dancer]

whoops.. sorry about the mistake..

its for a rb25det

[Sydneykid]

Hi Sentric dancer, what is your horsepower target, if less than 450 bhp then there is nothing wrong with the standard plenum.

[Sentric dancer]

Thanks sydney kid.. iam looking for about 300rwkw..

basically.. getting a GT2835 with external wastegate kit... so do i need a external manifold for that?

[Steve]

Might be pushing getting 300rwkw from 2835

[justified2.4]

Might be pushing getting 300rwkw from 2835

I recommend the Greddy Plenum as the R & D that has gone into that unit, the ergonomics of the location of sensors and it has been designed to prevent leaning of cylinders.

[JimX]

After B-Man's flowtesting results of the standard plenum, I am now convinced that "even flow" of cylinders of a plenum are largely irrelevant, if the standard runners are used. It also explains why my front facing plenum, which wasn't designed or tested for even flow (it's just a tube) doesn't cause any significant leaning out of the rear cylinders or air starvation of the front ones.

I believe the Sub Zero plenum uses the standard runners, but the website's been down for so long I can't be 100% sure.