Hey,

I wanted to know:

Cast iron manifold, no doubt strong and reliable, with 4 short pipes castinginto 1 flange to bolt the turbo. Does this help turbo spool faster? Because the exhaust air coming outfrom the engine flow quickly to the turbo due toshort distance and make it spool quicker?

OR

Stainless Steel manifold, with 4 long pipes, castinginto 1 flange, taking time for the air to reach the turbo and creates LAG or instead building heavy air pressure when the 4 pipes meet and pushes the turbo to spool faster...

Let me know your reviews on this. Also i wanted to know...

I would like to know, does your turbo setupgive you actual PUSH / THRUST / Throw you back in your seat whenthe boost hits hard, if yes then how much PSI are you doing and please mention your turbo size and trim...

Pls reply thankss

 

It might affect spool time just a little but not that much. I guess its all about the flow of the manifold. The distance isnt going to matter much because as long as your engine is running there is a constant flow of gases so there isnt really a delay between the engine and the turbo. Now if you had a really really long 10 ft. manifold then ya it might affect the spool time but I dont think there is a big difference on regular manifolds. Its all about the flow not the distance.

Wow lol I laughed out loud about that one. Any powerful engine will throw you back in your seat. Hell my stock z6 can throw me back in my seat, but not near as much as an engine with more power. It doesnt matter if you have a turbo or not. If you have some power under the hood then it will throw you back into your seat.

 

Cast will spool it better but not by much. Maybe ~500-1000rpms. Cast manifolds lose a lot of power up top because of backpressure within the manifold (a lot of exhaust trying to squeeze through a small manifold). Tubulars lose nothing up top. I've seen tubulars gain 50whp over cast. Tubulars are much more expensive though.