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Discussion Starter #1
Can two different turbo sizes be run at the same time, one for low RPM and one for the high range?
 

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yes, that's for twin turbo car's, rx-7's,300zx's, full drag car's,ect.
 

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King of OT
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Yeah, but it's usually not worth the time and money to setup. A single turbo setup can be just as effective and cheaper.
 

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Endless USA S13 Silvia
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and on a 4 cylinder engine it would be that much more expensive to do........not worth the money for the overall outcome......unless you want to do it to stand out........then it could be worth it to you

you guys forgot bout the RB26DETT;)

Late,
Daniel
 

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Actually, the twin turbo cars run two same sized turbo's, just vacuum pressure for one to spool earlier in the RPM range... hence, "twin" turbo. Bi-Turbo like on some Audi's use two different sized turbos...
 

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Discussion Starter #6
I want to make useable mind-numbing power from a GA16, how about a super turbo setup?
 

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I think the greddy Profec-B will allow you to set two sepcific boost settings for different gears, for example, 5 PSI @ launch, and then 15 once you hit second gear or something.
Just a thought, cheaper than a TT setup.
 

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Theory freak learning...
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What you described is called "sequential turbos". Two differents size turbo; 1 small to get boost faster and to prevent the long lag of the bigger turbo and 1 bigger to boost on top-end at high exhaust flow. Supercharger can also replace the small turbo... some setup have SC and turbo working sequantially.

Something like on the Z or the GT-R TT is not sequential. Both turbos are the same size and they boost half of the engine on their own.
 
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