If done properly lag is NEVER an issue. Like 5point7 said, those days are over.turbohips said:Well another point to keep in mind is turbo lag vs. whine all the time with a supercharger.
5point7 said:Turbo lag is old technology...the newer more advanced unit's don't have the old "lag" and they are extremely efficient. Take a look at what some of the boy racer 4 bangers are doing with Turbo's, or even the SRT4!!
The S/C head unit I had on my stang originally was a belt driven unit (Powerdyne BD-11a) and there was no whine at all, in fact, I couldn't hear it....so I upgraded the head unit to a gear driven unit that announces to the world there is a blower under the hood!! :biggrin:
I will restate again this has to do with design and application. Depending on what you want.aspendog said:To be fair, lag will always be there it all depends on the size/construction of the turbos, take for instance single turbo setup on a Supra, if one wants big horsepower lag will be previlant but there are things that can help with the lag such as small shots of Nitrous (electronically controlled), electric spoolers, etc. Ball bearing turbos spool much faster as well. That being said to put twins on this motor I would expect the max size of them to be T25's or 28's max (just not much more room under there).
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I wasn't speaking of its affect on lag or lack of, I was thinking that if you were running a dual set up, and IF MDS turned off a bank, then there would be no exhaust to drive the impeller on that banks turbo. I would imagine that an entire bank is not shut down but select cylinders balanced on each side to prevent shake.maneval69 said:How would MDS affect Turbo lag?
Switching from 8 to 4 pumps is going to reduce the volume of air and therefore the speed of the turbo. The when you switch back to 8 cylinders the turbo would have to spool up, right?
I don't know much about turbos but this seems logical.
MDS deactivates 2 cyls on either side of the V.obiwan said:Question - MDS, does it shut down 4 cylinders on one side or 2 cylinders on each side?