on the s4 turbo where the hot side meets the manifold there is like a flaper or a valve or something conected to a silinoid( sorry cant spell hahah) any ways im puting a s5 turbo on my motor and its not on that one and or there is no where to put it any ideas on what this is and what i should do about it. thanks

 

sounds to me like the twinscroll, you dont need it, turbo will spool a little slower but S4 turbos have larger outlet anyways so they make more power.

S4 = more power
S5 = quicker spool

pick one...

 

thanks what is the diffrence in power
like a few hp or like alot

 

im not too sure, but the bigger the better, so if you rebuild your turbo, you can only get so much out of a certain diameter hole, but im pretty sure its noticeable. if i was you id keep the s4 turbo, sell the s5 turbo and use the money to get it rebuilt into a hybrid, and all you do is weld up the twinscroll fitting, and take it off.

 

well the only problem is my s5 is like brand new and ported which who ever looks at this post i fixed my ports now but any ways my s4 is like fried i think like its bad

 

ah ic, well in your case i guess you could use it, but if its brand new and ported and all that good stuff you could get a lot of money for it to go towards your S4 turbo, but your probably better off with the S5 for now.

 

ok thanks for the info