Is There Any Benefit To This Turbo Set Up?

[Peter89]

a lot of haters in here i see

i think the idea is great if you have an N/A car and want to turbocharge it and have no room etc to fit in the normal method

is it better than N/A Yes? Is it better than doing it properly in the engine bay? No. but if you have no choice, then it is suitable

observations from the video its only 5psi but twin turbonetics, such a waste for an expensive setup!!!!

i dont really like the spool up noise, i prefer my GTST turbo spool up noise from the engine bay to be honest

when you do the rear turbo install there has to be more lag and you can see from his boost guage it takes a while to wind up

sure its twins so you would expect that, but even from that STS thread in the FI seciton, you can see on his guage, there is noticable lag

i think when most people think of the rear turbo setups they expect 5 seconds lag

whereas on an engine bay related setup its usually instant spool up

i think in reality the rear turbo setup would be sub 1500ms lag

and in the engine bay setup it would be sub 500ms lag

i say time when you open the thorttle full to time the turbo charger starts adding positive boost pressure

so i dont think it's as bad as eveyone believes

actually not really. it isn't the only option.

the big american v8s have no room in the engine bay however they still manged to turbo twin turbo setups. how?

the turbos are placed further down on the manifolds. usually there's enough room to run the turbos behind the engine, down a bit lower then a normal setup. there's a slight loss in heat from the manifold but it would be minimal. everything else can be setup like a normal system.

i tried to find a picture, i have seen some but i couldn't. google failed me.

[VB-]

^ some people still class that as 'remote' mounting, where they sit lower and further back, next to the bellhousing. really popular on the VE turbo kits

[mad082]

Another thing I notice, the comment that the intercooler has a large volume of air space to 'fill up'. If you have a decent IC surely the pressure drop should be very minimal. It may have slightly more volume than the piping but hardly enough to really affect lag much. I wouldn't be surprised if a lot of ICs have less volume than the pipework they are attached to and that it's more about the increased friction in the air flow.

it isn't just about the size of the cooler but the flow rate. they create turbulence because the air coming into it doesn't just keep on flowing as it would in a straight pipe. some of it hits the plate around the holes and gets slowed down, etc.

[Galois]

Marc's dead right there. The contact surface area between air and intercooler is what will slow the air down, and how many hundreds of times more area would that be, it's huge! That's the whole point though, the contact area will sap some energy from the air stream momentum-wise, but you want that anyways as the cooler is there to sap heat energy from the stream.