Hey i have seen it done on the lancer EVO8:
(not sure who did that but it's nice work)

i am sure it can be done on other engines too!

Anybody experienced in doing this??
I know regrouping cly 1&4 and 2&3 together can reduce lag but by how much??

 

interesting....

 

if you got a split flange then you can do that but on a 4-1 collector just get 1 big one

 

On a 4 into 1 I've been told they pulse and fight each other. Split it would work.

 

that was an AMS setup

 

that looks like a waist of time and money!!!

 

looks very ss autochrome.

 

like said before thats an AMS product its rediculously nice, as for having twin gates you need to have a split scroll/split inlet turbo as well as a split collector for it to be anything worthwhile, but if done correctly you can pick up a pretty good chunk of powerband (400+ rpm). Also you will need to run a t4 exhaust side because i only know of a select few t3 hot sides that use the split scroll design...

 

unless you have 1000+hp two wg is not neccessary.

 

hahaha sure!