The Best Stock Turbo Manifold?
I've always wanted to upgrade my manifold but with all the stories of people cracking after market manifolds, I decided to stay stock. This one that gives +21 over stock...that's pretty sweet. Pics?
The ETS shop car is down again for another turbo upgrade or we could post up some results. If anyone is interested in testing one out, i'm willing to give a discounted price!

Customer Car - Installed Pic







Off Car Pics
Price: $880.00 + Shipping.
Thanks Everyone!
Michael

Customer Car - Installed Pic







Off Car Pics
Price: $880.00 + Shipping.
Thanks Everyone!
Michael
our manifold design is such that it will produce more midrange, and a broader powerband due to the runner and headflange configuration. we might make +19 instead of +21 at PEAK hp, but we will be making a lot more in the midrange and lower rpm than the big dia. runner manifolds you are looking at. if you compare the big runner mani to the stock cast mani, you will see the big runner loses power until ~4500rpm
Last edited by Geoff Raicer; Feb 24, 2009 at 05:55 PM.
The runner lengths were designed to optimally work with their respective scroll. I would guess the best rig for stock (or stock-like) turbos would require a stock core like the ported Buschur one.
yes, our evo 8/9 and evo X headflanges are all like this. glad you like it
our manifold design is such that it will produce more midrange, and a broader powerband due to the runner and headflange configuration. we might make +19 instead of +21 at PEAK hp, but we will be making a lot more in the midrange and lower rpm than the big dia. runner manifolds you are looking at. if you compare the big runner mani to the stock cast mani, you will see the big runner loses power until ~4500rpm
our manifold design is such that it will produce more midrange, and a broader powerband due to the runner and headflange configuration. we might make +19 instead of +21 at PEAK hp, but we will be making a lot more in the midrange and lower rpm than the big dia. runner manifolds you are looking at. if you compare the big runner mani to the stock cast mani, you will see the big runner loses power until ~4500rpm
Let me rephrase it then. It seems that the Stock ( turbo will barely see any gains with headers if any. It seems all the cars were tested with Green or Red turbos. None of these test were with stock 9 turbo. Which is what the majority of us run!!!
that is an incorrect conclusion - definite gains to be had when improving the exhaust manifold with turbos of all sizes, its a result of less energy being lost from the exhaust stream before it hits the turbine wheel
What's funny is nobody showing real numbers on the stock turbo all off the test have been on upgraded turbos it seems the cast ported mainfold would be the best for stock apps. But really I can't see much being gained for the money. We will all be impressed when someone used a stock 9 turbo on a car. I really doubt we would see gains of 20whp or more my .02






