Thread: Any reason NOT to go twin

a thread you started?

it says it was stated by "dagger"...

yeah, no original post. weird.

efficiency is a good reason not to.

How about for the same money just turbo it and go twice as fast?

Originally Posted by dagger

well thats kind of what I'm asking, we already have a super charger on the car and I'm guessing the turbo kit doesn't require all that much modification to get it to work with the super charger so I'm just wondering why more people don't go twin charged?

From the research Ive done its a tuning nightmare..and what blue was saying instead of having a tuning nightmare go with just a turbo and have more power than both.

once the turbo really starts to spin, the supercharger will just get in its way.

with the stalls/torque converters avalable you are pretty much in high rpm every time you step down on it.

Twin-charge is the way to go on the street. For the track, turbo is probably better, although zzp built a twin-charge car that ran 9.9, so I think we can rule out the assumption that the supercharger is somehow creating a limit for the turbo.

The biggest advantages to twin-charging is that the turbo can be sized much larger to create better top-end boosting while still maintaining plenty of low-end torque with zero lag. This is most advantageous on the street where you are driving in many different rpm ranges and want instant power. I really like the feeling of the instant power in every gear and speed. Swapping smaller pulleys on a twin-charge setup creates even more street power, but sacrifices the top-end limits because of the stack effect.

Twin-charging will create more heat, as the boost still tends to "stack" even after the bypass is active. This stacking is what gets the boost up to full much faster, but the additional heat must be dealt with, which is why it is recommended to have a twin-intercooler setup installed.

There are not very many twin-charge setups, so I don't know who started the rumor that it is difficult to tune. It is no more difficult, or even different, then tuning a larger turbo-only setup. Boost comes in earlier, so PE vs. TPS is adjusted to handle that, but other than that, it is basics.

Pfft. Holset's are junk. Stick with Garret or Turbonetics.

garrets are expensive for what they are.

curious, with the stall in this video, would it not elminate the low end lag/spooling of the turbo?? keeping the rpms high at all times when your in it no matter what speed your at. would you still need to twin charge with a set up like this??

http://www.youtube.com/watch?v=4E2RU...eature=related

The only reason to go twin is when you are running a larger turbo. Most of the base turbo kits run turbos tailored to our platform, very little lag. Some of the larger turbos available have been pieced together using various parts from different manufacturers to reduce the amount of lag there is. The basic rule seems to be that if you have a T67 or above, twincharged will help. You have to decide if you want to mess with 2 intercooling systems, also at that level traction becomes a problem, will you really be able to put that power to the ground or is the turbo lag really a good solution to traction problems?