>>1 OFF Twincharged Setup idea, possibly beneficial or just stup!d?<<

**hdnseek** · 12-10-2013

Alright looking to get shot down but thought id toss this idea out there... im thinking of putting a custom air to air intercooler core under my m90, to run a front mount. It would take the discharged air and flow through the FMIC and then through a blow through setup back into the LIM. Aussie holden guys are familair with these. Then i thought what if it had a turbo too? Not like the setups a couple guys have where the turbo blows through the supercharger in seris, but having them both boosting separately in parralel until they join at a Y right before the maf and tb. I would run 2 seperate 27"x5.5"x2.5" FMICS and tubing into a y right before the maf and tb and have to have a diverter valve to keep the boost from the supercharger from backflowing into the turbo until it creates boost.
Would there be any benefits to this from the normal twincharged setups? Not addressing tuning because of course ill hear itll be nearly impossible or a nightmare. My buddies old vr4 had a blow thru setup after the Y joining from the twin turbos and then thought why not supercharged and turboed? Would the BOV replace the boost bypass valve on the sc since itll be blow thru?

Also has anybody ever though of using one of these plates or something custom to use the immediate boost of the m90 to spool a bigger turbo?? Why get rid of the sc altogether if it could help spool a turbo?

Just an idea and just tossing the idea out there, would be very unique though!

Pros and Cons go!

**MrPoopyButthole** · 12-10-2013

Just take your S/C off, bolt a Turbo on, have your air to air intercooler.

**hdnseek** · 12-10-2013

Yeah but for unique points lets say I keep both with this setup... Beneficial or just stupid?

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**GTPpower** · 12-10-2013

I don't see any benefits to this.

**hdnseek** · 12-10-2013

Benefits would be the supercharger feeding boost until turbo builds, then diverter valve switching to turbo boost and making more efficient. Compound twincharged setups create a lot of heat, where as this parallel setup both could be cooled by the intercoolers and the m90 would feed low end torque and turbo would take over top end.

**machinegunsquid** · 12-10-2013

For unique points, yes. Twincharged looks cool, and is a neat idea.

Biggest problem though is cost and efficiency. While the S/C will spool the Turbo faster, the S/C will become a restriction. It's cheaper and easier to just bolt on a turbo setup, and get more power out of it too.

**hdnseek** · 12-10-2013

Yes but if cost wasn't a factor, which it always will be, and you were looking for greatest efficiency wouldn't a parallel twincharged system be most efficient, where you have the supercharger feeding it boost til about 3,500-4,000 where the m90 starts losing efficiency, and have the diverter valve switch over to run turbo boost to pull to redline only and just have the m90 venting to atmosphere?

**hdnseek** · 12-10-2013

Here is a great article about concept and application
http://ezinearticles.com/?Twin-Charg...ion&id=2217435

**machinegunsquid** · 12-10-2013

^^Link is "Forbidden" probably all the porn on my comp.

In a perfect world, yes. Though, I don't believe it would all be applicable power. Here's how I see it; even basic modded S/C cars produce quite a bit of torque and have no problem spinning through most of first if not the whole thing. Add on top of that the increased power/torque the turbo is going to be pushing, you'd play hell trying to get that power to the ground on a street setup.

While I don't bash on the idea at all (I personally think it's a really cool idea) I just don't see how it would be beneficial to run the twincharged setup.

**hdnseek** · 12-10-2013

edited the link. should work now.
Okay so apply this setup to my buddies awd vr4 and you could create hell, strap an a2a intercooled m 90 and 2 huge twin turbos parallel and you got 4 wheels of fury, well **** make me want me want a tt stealth now!

**SnowFlake** · 12-10-2013

The m90 feeding a fmic fed by a turbo and all that seems like a big mess.
I'd rather see something like what Danomite runs. Full stack under the blower fed by a turbo that has it's own w/a IC both cooled by a HUGE front mount heat exchanger.

**machinegunsquid** · 12-10-2013

Link works now, it's a good read.

Though the one thing I can't really rationalize is this; With the S/C helping the low end to spool the turbos faster and get you off the line faster, wouldn't you still be faster with the turbo's prespooled off the line? And 2ndly, the S/C would only be beneficial in 1st gear, because at WOT you shouldn't be dipping back into the 3000rpm area, where the turbos take over.

**GTPpower** · 12-10-2013

I believe that is the way most people have their twin charged setups working - the bypass valve opens after awhile and let's the turbo do its thing. Hence why I don't see the advantage.

The m90 is also not a restriction on a twin charged setup.

**danomite02** · 12-10-2013

no no twincharging is silly. dont do it

**machinegunsquid** · 12-10-2013

How would the M90 now become a restriction when trying to push 15+lbs on boost through it when it's on a 3.8-4.0 pulley?

**hdnseek** · 12-10-2013

Snow flakes missing my point, they'd be separate systems until the y joint them at the maf before the tb. The ad would have a custom a2a plate where the m90 discharge would run through it's own ic and then to the y, where as the turbo would have time to spool and then flow through it's own piping and ic to the y. A diverted valve would let sc boost fed til turbo came on line and then would block off sc boost to vent and let the turbo boost do the rest of the work, complex but hell it'd be cool. The sc and turbo boost would never touch each othed

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