heyarnold69

iTrader: (1)

Do these work at all? or just a waste?

mysql101

it'll help make your wallet lighter. And lighter = faster.

Razz1

From what I read they do work in some applications. They will not give the gains they claim.

You really need to know your stuff to know which engine they will work on.

Won't help the 8.

RXH8TED

iTrader: (1)

worthless pos, don't waste your money.....

Mikeluvs8

works on my mazda 6.

mysql101

^ Which means exactly squat on the RX-8.

StealthTL

iTrader: (1)

Do the math yourself - they are supposed to move the intake a little further from the engine, insulating it from the heat, cooling the charge. We don't even have a 'manifold' like a piston engine.....

S

rotarygod

You have a manifold. You don't have a plenum. It is used on plenum equipped cars to move the throttlebody farther away which increases the plenum size and changes tuning. I don't buy into it doing anything on a Renesis.