I'm looking into buying a y pipe and jt imports said that there's a spitter mod. Anybody suggest this!

Here's the email:

The splitter mod is a medal divider between the Y-pip to prevent air from
one turbo to be forced into
the other while boosting, to provide power and longer lasting turbos..

They run about $200 and they are all pretty much USED. New I would have to
talk to a shop and
see..

Sincerly,
Jason
JT-Imports
Yokohama, Japan
www.jt-imports.com

 

this is a 99 and up efini y pipe also

 

Same theory as a divided single turbo manifold.... hmmm

Only down side i could see is that each turbo would effectively have to flow through a portion of the y-pipe thats half the size of the rest of the piping... a likely bottleneck, and as i understand it (questionable indeed), airflow is much like a chain: only as good as the weakest link.

i'd be interested to see data on the mod tho....

 

Here's the previous thread regarding this:
https://www.rx7club.com/forum/showth...ighlight=ypipe

It was pretty informative until it got off-topic
I don't believe anyone posted any definitive results, though.

 

Good stuff. Small gain but a gain none the less.

 

Doesn't matter here. It's the stock y-pipe so both turbos have the same volume of pipe to blow through whether the splitter is there or not. The splitter should work exactly as claimed, how that translates to horsepower I dunno. I don't see how it could possibly hurt.

 

Either way the air coming from each turbo has to enter the motor at the same spot so why split them just to rejoin them?

 

You'd split it because pressurized air coming from the first turbo might get into the wrong side second turbo while it's try to spool up, effectively slowing it down. I don't know if this actually happens, but it's a decent theory.

 

I thought it was to reduce turbulence when both turbos are pumping out boost.... sorta like the "tornado". The control actuator prevents air from going into 2nd turbo, I think

 

IMHO is doesnt seem to restrict anything, it actually seems to increase turbulance, reduce/prevent the air from turbo one pushing into turbo two on lower boosting levels. I mean stock turbos arent T-51Rs here, they dont put out much, so it seem legite to me.

I would be interested in seeing the results though, maybe the guys in Japan (Jason or Jesse) can ask one of the shops for a dyno or some hard info.

 

I saw it in RX-7 magazine. It helps in transition more than anything. The hp gain is small but it comes at the right time... There is no negative to doing this.

It also puts less back pressure on the turbines.

 

who has actually done this? any difference in Hp? did it reduces lag (seq)?