my friend has a GT22 turbo that i am going to probably buy off of him, and i want to build a dual charge. does anyone know appx. how much it cost to dual charge, and what i would have to rebuild on my engine to handle this much power?

thanxxxx a BUNCH!

 

Twin charging is not effective, impossible to tune, and a pain to build.. you're better off going with one or the other...

 

QFT

 

I would love to know where this little myth came from.

Its no different than tuning a blow through maf turbo setup.

 

this is the myth about it but cant be far from the truth...

the only problem with a twin charge is having the right supercharger that when the turbo is at full spool the sc isnt holding it back but not being able to keep up spinning wise

 

Agreed. Lots of bad info on this site about dual charging.

The most difficult part is fitting the right turbo. It takes a bit to get used to using compressor map pressure ratios at anything above ambient pressure.

Fitting them are cake since you dont have pulleys to get rid of or intake manifolds to change.

Tuning is just as easy. We are lucky to have digital MAFs which are more precise than your typical 0-5v analog ones used on non-GMs.

 

Meh. I feel you should do one or the other really well then have both. Unless its a show car stick with 1 form of forced induction.

 

well, the GT22 is a teeny, tiny turbo. it is coming off of a car that is TT, he has a big turbo and a small. what he is doing is selling both the big and small turbo, and i don't feel that any 2.0l can handle both the S/C and a big turbo, so i figure why not buy his smaller turbo and just build it on from there.

i really don't want to just turbo the car because after all i did buy it for the S/C, and i think dual charging would be rad. is it really a waste in power? and impossible to tune? cause i mean, i super REALLY BADLY wanna do it.

 

Well you have to find a turbo that will support decent airflow but you wont need one that supports a high pressure ratio. I hope you have some experience in aftermarket forced induction design. If you have never built a turbo or blower setup or at least successfully designed a working setup youll want to stay away from this. It is more complicated than just a simple compressor swap.

Tuning would be best done by someone who at least has a background tuning engine management with other LSJs or at the very least LS2 GTOs or similar late model GM electronic throttle body PCMs.

I didnt mean in the above posts to make it sound easier to design than a turbo swap its just a different approach has to be taken when choosing the right turbo. Its not something that you would just reference from a web forum or internet site but any engine management book would be able to assist you.

 

witt..you are my hero.. keep up your **** man

 

call hahn racecraft