Turbo Question
#13
"Sequential Twin-Turbo", was designed to improve response and further reduce turbo lag. The turbos operate sequentially, that is, at low speed, all the limited amount of exhaust gas is directed to drive one of the small turbines, leaving another idle. Therefore the first turbine will accelerate quickly. When the exhaust flow reaches sufficient amount to drive both turbos, the second turbo intervenes and helps reaching the maximum boost pressure.
#14
Originally Posted by lane_change' date='Jan 14 2003, 11:33 AM
"Sequential Twin-Turbo", was designed to improve response and further reduce turbo lag. The turbos operate sequentially, that is, at low speed, all the limited amount of exhaust gas is directed to drive one of the small turbines, leaving another idle. Therefore the first turbine will accelerate quickly. When the exhaust flow reaches sufficient amount to drive both turbos, the second turbo intervenes and helps reaching the maximum boost pressure.
#16
They were designe to run sequential but I had switched mine over to non-sequential so I had to build up enough exhaust gas to spin them both so I had a little more lag but a little more mid range and the same top end. No transitions though so when my boost came on it did not 10-8-10. It just stayed 10-10-10. I think it is a better way for drag racing but worse for track racing.
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