My 04 has the Inline Pro log manifold. While I could fabricate a 321 stainless header as I've done in the past, I'd like to consider purchasing a "drop in replacement". Are there any such animals? Or are the other setups different enough that my turbo would end up in a different location or angle?

Thanks!

 

I've been here for a while and have yet to see one. The only cast manifold replacement I'm aware of is the greddy/Pfab swap.

BTW, if you haven't already, it wouldn't hurt to check your passenger side engine mount.

 

full race ramhorn will have the turbo in a very similar location

 

There is a guy that works at synapes performance that made a drop in replacement tubular manifold for the inlinepro log. I should have bought it when he was selling it. Now he is just selling the whole car.

 

Thanks for the replies.

I'm not needing more power. But, I am in need of more response. My Inline Pro setup is the most unresponsive turbo setup I've ever driven. The turbo header can help build boost faster. I guess if I decide I need one, I'll build it myself.

 

The log manifold responds and spools much faster than a tubular manifold. The log manifold also makes a lot less power

check out my results of the log vs tubular spool time

https://www.s2ki.com/s2000/topic/100...#entry22271490

my signature has results of how much more power tubular manifolds make over logs

 

I agree that a log manifold and it's tiny volume will provide more responsive pulses to the turbine, thereby spinning it up faster at low rpm and no boost conditions. But, under high boost conditions, such as at high RPM, the log manifold suffers mightily. We did plenty of tuning on turbo engines that prove the viability of well designed tubular headers. High RPM throttle response is better with a short, equal length, tubular header without sharp bends or excessive volume and a smooth transition in the collector. There is a reason road race engines use tubular, equal length headers.

 

Oops. Double tap.