Thread: Turbo flow maps

Plotting Points on Maps | Turbobygarrett


Hi James
apart from converting some stuff to metric, I find this explains it well
I generally use this as a go to when calculating, basically using an average of 90% VE for standard TD5 head. 92% VE if match ported . another 1% with ceramic coated manifold, as I haven't been able to get hard and fast figures.
I think the turbo company have used the 22 psi figure as a generalisation as 22 psi pre intercooler will be lower post intercooler , by how much obviously depends on the intercooler .
A good map will have peak VE and peak torque around the same rpm.

Originally Posted by discorevy

Plotting Points on Maps | Turbobygarrett


Hi James
apart from converting some stuff to metric, I find this explains it well
I generally use this as a go to when calculating, basically using an average of 90% VE for standard TD5 head. 92% VE if match ported . another 1% with ceramic coated manifold, as I haven't been able to get hard and fast figures.
I think the turbo company have used the 22 psi figure as a generalisation as 22 psi pre intercooler will be lower post intercooler , by how much obviously depends on the intercooler .
A good map will have peak VE and peak torque around the same rpm.

I looked at this earlier, but just sat down now to have a proper go.....and its vanished! and I can't find it on the garret website either