# Twin turbo **URL:** \ **Category:** SON240sx Automotive\ **Created:** [November 5, 2007, 6:43pm UTC](https://forums.speedlife.net/t/twin-turbo/110808 "2007-11-05T18:43:01Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![Ko-San](https://avatars.discourse-cdn.com/v4/letter/k/8e8cbc/32.png) [@Ko-San](https://forums.speedlife.net/u/Ko-San)\ **Post date:** [November 6, 2007, 3:26pm UTC](https://forums.speedlife.net/t/twin-turbo/110808/10 "2007-11-06T15:26:55Z")
> [@Portal](https://forums.speedlife.net/t/portal/14785/2): > > Well it depends… I think its doable… SR stock is tight on producing exhaust CFM but you could do some stuff… > > Twin turbo usually comes in parallel or sequential. Parallel being two turbos the same size, sequential, one is bigger than the other. > > However both of those usually used in slightly higher displacement engine than SR’s so you would need to use something like the following. The problem would lie in the amount of exhaust an SR produces (CFM) and how much would take to fully spool two turbos of specific sizes. There is a key concept, sequential setup, I believe porsche used/uses where the manifold is set up such as the exhaust gas would first flow through the bigger turbine, than the smaller one, thus to make two turbos work well on a smaller displacement engine. They would be as far apart in size as possible where the smaller one would spool really early, and max out just about where the bigger one would spool up, and once the big one would build pressure it would open a external wastegate/bypass for the smaller one to relief exhaust gas flow stress from the big turbo. > > This would definately be a custom set up and cost alot of money. And then theres the twin-charged (both turbo and super charged) s15 on youtube which is pretty sick as well. > > If you want twin turbo I would go 2JZ or RB26, but one big turbo is always easier to deal with. > > Hope I could help. lol im not doing it I was just wondering and being curious good info though thanks guys I kinda get why a TT wouldnt work well on SR engines --- _[View the full topic](https://forums.speedlife.net/t/twin-turbo/110808)._