Quote:
Originally Posted by Grady
The T518Z is a small turbo. Going with a larger turbo will not change the HP that much at a specific psi. It will change when the boost starts and how much max boost you can get. I believe that turbo is only good for upper 300hp range. In order to make more HP at the same PSI you have to control IAT and have a good tune. I am sure CSGMike can have a more detailed explanation. Plus his explanation of a “Properly” sized turbo for your goals.
And there is only one correct answer when someone asks if they should turbocharge or supercharge their BRZ...... “Yes!”
|
bigger turbo will have more air flow than a smaller one at same Psi, so a bigger turbo will give you more hp for less boost
and also make engine less knock prone so shitty-fuel friendly
only downside of bigger turbo is slower spool, but brings only advantages.. also IAT (actually proper name is Intake Charge Temperature for a FI car) is lower with bigger turbo, for the same HP compared to smaller
"properly sized" would be a kind of compromise between fast enough spool, and max hp
Those 2 are one the contrary of the other in the choice of turbo size