For starters, you CAN NOT use the stock heat shield. And its rather tall, its got to be close to the stock air intake path.
After looking around my engine bay recently, I'm really glad frankenfiesta is running a 2J intake because with the external gate, I'm not sure a stock style intake would work anymore.
My biggest issue I have is the flange holes are enormous. The tubes are the correct size, but the flange is way bigger. I port matched the oem manifold gasket the best I could, but if I took the gasket 100% out, there would not be much gasket leave to the edge of the manifold.
But its welds, its tube thickness, its flange thickness, its all pretty epic for $400~ shipped. Its really hard to go wrong at that price.
Lots of people disagree with me. But I still like cast manifolds. Lots of people ( people like me ) would point to the fact that I sell ported manifolds for $$$. That is true, lol. But if someone really wanted to, they could also look up where I asked Adam/Modern to build us a cast aftermarket manifold with an external gate for me to buy a long time ago when modern first got on the forum. Not because it would much cheaper, but because I like cast manifolds over tubular ones.
Anyone that really cares, and doesn't JUST want to argue about it, feel free to join the SR20 forum and ask them which they like better, stock cast manifolds or tubular manifolds. And guess what turbo they deal with the most..... GT28.
But that is my 2 cents. Anyone is free to disagree with me, I don't mind.
Now... I won't argue that with an "ultimate setup" a well designed and perfectly built tubular manifold on a big turbo isn't the way to go, but... For a stock turbo or GT2554/GT2560 type setup, I'd bet the tune and fuel have far more to do with it than a tube manifold ever could.
Russ doesn't tune non-DHM setups, but if he did.... I bet a apples to apples setup using #1 cyborg manifold with an external WG and a ATP GTX2860 vs a pumaspeed manifold on a GTX2860 would have near identical results. I bet the cast manifold would have better response and the tube manifold would have less resonse but a tiny almost unmeasurable gain on the very too end.
But you'd have to have Russ tune both. Not Cobb tuning one 2 years ago with a RUSH RUSH RUSH job for ATP.
Cobb had like 5 seconds per turbo to tune and track each setup on ATP cars. And do you REALLY think they really sat and lost sleep over tuning the GT2554 for absolute best results, while knowing they had 2 more turbos waiting on the table to install and test/track/dyno ?
I don't mind being wrong
I'm very willing to concede to being wrong if anyone proves it
And not the person selling said product. Shocker... Pumaspeed saw gains with pumaspeeds $950 manifold.