:) كلامك صحيح 100% ومافيه اي غبار لانه حجم المكينه ونوع التيربو يلعبون دور كبير
شيء اكيد انه 5 بي اس اي على محرك بحجم 2 لتر مش نفس 5 بي اس اي على محرك بحجم 5 لتر ..... بس حنا كنا نتكلم بشكل عام ...... وعلى فكره ترى فيه انواع من التيربو لو يكون على 5 بي اس اي مثلا تلقاه أحسن من بعض انواع التيربو حتى لو كان على 10 بي اي اي لانه الاولي يكون الـ air velocity أفضل |1|
Some Turbo's are better than others at different Psi ranges due to the efficiency design of the turbo. Every turbo has a Map with it that shows u where is the turbo sweet spot. And again here the same rule applies where you can put a T76 GTS on a Supra and run 30psi from the turbo while a Viper engine would need two T76 GTS's turbos so he can run over 20psi from them.
Also what makes gains larger per psi is tuning. Someone can run 10psi on a LS1 with 8-9 degrees of timing while someone run 8psi with 19 degrees of timing and guess who will make more power? The 8psi will make more power.
If someone can get away with higher psi and high timing with no knock he will generate more power. Of course thats whats race gas for. Race gas bascially delay the ignition in the combustion chamber when there is alot of heat in the cylinder. Thats why Race Gas allow you to run high timing and high boost and get away with it. What happens when u run pump gas on the same tune as the race gas is..... The ignition happens when the stroke is pushing the rod and pistons towards the spark plug, but because there is too much heat in the combustion chamber the fuel inside will ignite before the stroke finishes the cycle which will cause the rods or pistons to break because its between the pressure from igniting the air/fuel and the crank force pushing it
So if someone wants an efficient setup he/she should look at:
1.Flow Turbo/SC size
2. Compression Ratio
3. Boost levels
4. Fuel type and requirments
5. Air entries Intake/cam/intake manifold/TB,etc..
6. Air exits headers, manifolds, downpipes, exhaust, etc...
7. and most important thing is tuning... Controlling PE, VE tables, timing by checking out low and high timing tables, Air fuel ratio and monitoring knock. There are more to it, but this will give u an idea on whats involved in making power on a Forced Induction car.
