NB A/C and P/S with EFR 6258 and BEGI S4
 

I couldn't find an example of this combo. Anyone know if they would work together?

I know the S4 is compatible with A/C and P/S, even though it is a little tight.

I also know the EFR is a huge turbo.

Do they play well together? It would be in a '99.

Before you ask, I wanted to pick up a used S4. I don't want to wait for Artech/Absurd.

Thanks.

No.

Check out Soviet's thread, that will give you a good idea of EFR fitment (since he took it off so much). Short answer is no.

Long answer is noooooooooooooooooooooooooo.

At best you will need a custom downpipe. At worst there might not be enough room for a downpipe.

I should have written that I was only interested in the s4 manifold with a custom downpipe, not the whole kit.

I know that fael had a different non efr borg on a begi manifold. I sort of guessed an efr couldn't be a/c and p/s compatible based on the overall length leaving no room for a downpipe without a cheater bend.

No way with ac and ps. Ever.

Yes you will need a custom downpipe.

I would call up begi and give them the efr dimensions and ask em if it will fit.

Knowing begi though, they will likely give you the wrong answer.

I say just wait for artech

The efrs are like a mile long. Won't fit... A 2560 with PS is a squeeze with that manifold.

Here's a blurry top-down pic of my EFR. Notice that the collector is in between the #1 and #2 runners on the head flange. This is as far back as possible to get a 3" downpipe on it without hitting the rear engine bay shelf.
PS? Nope!

https://www.miataturbo.net/attachmen...d-dscf0072-jpg

We will have an A/C and P/S compatible manifold/downpipe specifically designed for the EFR6258 and EFR6758 on the market within 60 days.

I love you. No homo.

keep me in the loop please.

If it ever comes out I will probably buy it, since I can walk and pick it up.

ARTech has a long runner low mount manifold that he designed for an EFR to be compatible with both AC/PS. He posted a pic of it somewhere on the forum but I cannot remember the thread. It is being made for FrankB if I am not mistaken so I will get to see it first hand when he gets back from deployment this year.

EDIT: I found it, here: https://www.miataturbo.net/artech-fa...inquiry-69584/

I have that ARTech manifold. Currently with Garrett + long v-band adapter.

here's a picture https://www.miataturbo.net/engine-pe...e2/#post947558

How's the 60 day deadline coming?

Anyone have a better picture of one of the above manifolds?

The manifold we wanted to make isn't doable for a reasonable (<$1000) price, so we're looking into an alternative that will provide the same function at a price that makes sense.

I am almost finished building a manifold for my 99 AC PS efr turbo, wishing that i made it with smaller diameter primaries so i may make another one, i did have to mofify the PS and water pump inlet lines to fit everithing.
https://www.miataturbo.net/attachmen...ine=1382315741
https://www.miataturbo.net/attachmen...ine=1382315741 https://www.miataturbo.net/attachmen...ine=1382315741

Props Harold!
My EFR with PS/AC is a short tube Absurd Flow style manifold that I made. I wonder how much is given up by not having the long tubes?

Wowsers. I don't know how you managed to wedge all that in there, but you certainly appear to have met that goal. Also digging the couil bracket ;)

I'm guessing some pump and compressor heatshields are in your immediate future?

I will make a time lapse build tread when i finish this build in a year (LOL) and will include spool and dyno information so we can compare notes and learn from each other's results on the efr's