Turbo question

[Church]

This is probably a stupid question but i was'nt sure so here.
Say you have a t3/t4 set at 20 psi and a 16g set at 20psi, will a bigger turbo put out more power at the same psi.

 

[MitsuReaper]

yes. because the bigger turbo flows more CFM (more air)

 

[GonePostal]

A bigger turbo will be more effecient at that PSI because it will cause less heat. If the turbo can't flow that much air, it won't be running at that PSI period.

 

[Kevin Jewer]

The presure you use for the example makes a huge difference. As you move that pressure down further into both turbo's efficiency range, the difference becomes much less. To the point that lag becomes a deciding factor in performance increase or decrease. At 20 psi the 16g is not as efficient as the larger turbo, but at 15 psi it would be a whole other story...

 

[IPT]

Originally posted by 95GSXracer
At 20 psi the 16g is not as efficient as the larger turbo, but at 15 psi it would be a whole other story...

That is not nessesary true. A 50 trim wheel is very efficent at 30 psi of boost, but a 60-1 wheel is not an efficent wheel, It moves alot more air though.

 

[BatmanGSX]

Originally posted by GonePostal
A bigger turbo will be more effecient at that PSI because it will cause less heat. If the turbo can't flow that much air, it won't be running at that PSI period.

News flash, sparky, pressure and volume are not directly proportional. There is something wrong with what you said. It implies that the sole benefit of a larger turbo is "more efficiency" at a specific boost and not also more airflow. Is that what you meant? Because that is wrong.

A 50-trim T3 will be more efficient than a 16G at the same pressure and also flow more air. Period.