Its not too bad, but would have to port the manifold to improve it any more.

Just for anyone thinking of this for a non turbo setup, The standard air cleaner and seal fits the TB very well, you would use a thicker alloy plate under the TB to get the filter height back to std.
Using the standard filter assy with the turbo will be a lot more difficult, but worth a go I think.

27% Flow increase with the TB is not bad at all.

RC, I use MSII with Tuner Studio (TS), TS has a pretty nice statistically averaged auto-map tuning feature which I like a lot. I think it works with MSI but you'd want to check. The license for full features (which you need to autotune) is pretty cheap, under 100 from memory. All you need to do is get it idling, have a guess at the VE map and go driving (there's a bit more to it but not much).

RC, I'm going to use the stock air cleaner/filter with the turbo if I can make it all fit! All part of the stock look. Those EFI Hardware TBs would be great! They don't fit into this budget by a long way!

Yeah Matto, I'm using single turbo of an R32 twin turbo. But have taken out the ceramic turbine and replaced it with a steel one. I think they call it the N1 upgrade. The R34's have a larger turbine I believe. So I think we have equivalent turbo's.

I'll do some testing at 12Psi first to see what it makes for those that want to run the standard ceramic turbo(they are cheap too).

I went to my engine man's today and flow tested the two manifolds.
One with the standard carb and the other with the TB. It was only a 26% improvement with the TB, but this was due to the manifold being the restriction, not the TB. Testing though one runner, the TB flowed 63CFM at 10" and the Carb one flowed 50CFM at 10". We unfortunately didn't have time to test each runner and the carb and TB without manifolds.

ATM I'm putting my a12 turbo back together. I was going to chuck the carby setup back on but this sorta setup is tempting :p. I'll be using a r32 gtr n1 turbo so I'm hoping sikyne is doing something similar lol. Thanks for all your info BTW :)

I do like the idea of it, keeping stock air cleaner (non turbo version) is a nice novelty. Your tempting me to do it to my mustard coupe. But i'm lucky enough to have an EFI hardware manifold and bodies, and for the same amount of work i can install that,

does mega-squirt do a self tuning software in any of it's kits these days?

Nice work so far mate if I ever convince the mrs to let me get a y wagon ill give this a go for sure haha.

Giggle away.

The injector will flow enough for 100+Kw, but this initial setup will probably be between 50 and 70 Kw. The Tb is about 40mm. Plenty big enough for the standard manifold. I might do some flow bench figures of the TB/manifold combo, just for giggles.

100KW is a ton of power for a street car of this size.

Is this TB a 54mm bore?