What is your reasoning then? Where is the proof? its in the pudding, show me the pudding.
Stolen from NASIOC
http://i824.photobucket.com/albums/zz161/jkopinga/Dyno%20Sheets/83_-75_3_hotside_comparison.jpg
"In this dyno sheet you can see the overlay of the BW 83-75 with 3 different hotsides:
- Twin Scroll 1.00 A/R running 30 Psi boost pressure
- Twin Scroll 0.91 A/R running 30 Psi boost pressure
- Single Scroll 0.88 A/R running 25 Psi boost pressure"
Looks like it makes a pretty damn big difference to me. Not sure if the effect is different with a smaller turbo on a smaller engine though. If I’m spending the money for a tubular manifold over the T25 APR manifold I already have, you can bet your ass it will be twinscroll.
What is GenerationJDM? Is that a shop? If you’re a shop joining the site, try to use firstname@shopname so it’s clear who you are.
I’m not sure but that ceramic coated mani looks a lot like the old vast mani’s
Leaving these here for quick reference and for everyone else’s info.
3/8’s is a little thin i’d look for 1/2in, 034 makes the best one IMO.
http://store.034motorsport.com/exhaust-manifold-flange-2-0t-fsi-2-0-tfsi-2-0-tsi.html
Guess I didn’t look hard enough the first time.
t4 or t3?
for what?
The collectors both the treadstone and sparktec don’t specify. And twinscroll comes in many mani sizes
It doesn’t say specifically, but it is designed for the EFR series. Twin scroll EFRs are all T4.
Treadstone says t4 but it’s 1.50, personally I’d want to use 1.25
Edit: is not says
1.25…what measurement is that? port diameter?
runner diameter. You can use 1.50 but you spool later, it’s mostly used for better top end and larger displacement motors.
ohh gotcha, i think mine were 3 or 5 16ths
I tried a few times, but it kicked my ass.