My TURBO 'd 6.0 T/a Sucks!!!!
08-16-2009, 08:36 PM
#81
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You sure about that? Doesn't look right. Wastegate allows XX psi of exhaust pressure before it pops off. It has nothing to do with what is happening on the cold side unless you are running a fancy boost controller that is actually referencing manifold pressure (via a MAP sensor) to regulate the amount of pressure put to either side of the diaphragm.
08-17-2009, 12:07 PM
#82
Yes I am sure. The exhaust pressure does not actuate the wastegate valve...the reference ports on it do. Want proof...go pull the reference line off your gate and hold on, lol.
With a supercharged car you have a fixed amount of airflow. If you do anything to the motor to help it breathe better you will see less boost and the same or more power.
With a turbocharged car the wastegate controls the boost. The wastegate works off of a pressure reference. It does not care if it is on a stock ls1 motor or a 408/big cam/nice heads/sheet metal intake. The wastegate will still operate on pressure. The motor will be flowing a **** ton more with the larger motor but the wastegate/boost control system will still try to achieve the same boost.
P.S. I'll be in the minority, if you dont have the money to spend on the intake then dont worry about it. I've switched from a ls1 to a ls6 intake at 650 rwhp and it only made 680. 30 rwhp is 30 rwhp but with turbo's sometimes 30 rwhp can be cheaper then $300-350.
With a supercharged car you have a fixed amount of airflow. If you do anything to the motor to help it breathe better you will see less boost and the same or more power.
With a turbocharged car the wastegate controls the boost. The wastegate works off of a pressure reference. It does not care if it is on a stock ls1 motor or a 408/big cam/nice heads/sheet metal intake. The wastegate will still operate on pressure. The motor will be flowing a **** ton more with the larger motor but the wastegate/boost control system will still try to achieve the same boost.
P.S. I'll be in the minority, if you dont have the money to spend on the intake then dont worry about it. I've switched from a ls1 to a ls6 intake at 650 rwhp and it only made 680. 30 rwhp is 30 rwhp but with turbo's sometimes 30 rwhp can be cheaper then $300-350.
