Too much boost

[OneQuikSix]

Question for the masses...

I just got my combo back together (see sig) and can not control the boost. Because I'm still waiting on a stock-style wastegate actuator from Precision, I decided to leave the puck on the downpipe as-is and see how things went. Well, the turbo lag I expected...I did not expect to see 20psi when I let off the gas. You heard me, with the downpipe puck flapping in the breeze, I get 20psi plus!!! Is this normal given my combo? I'm terrified to attached a wastegate to the turbo/downpipe now.

 

[Darkcyde]

Question for the masses...

Is this normal given my combo? I'm terrified to attached a wastegate to the turbo/downpipe now.

without a wastegate in proper working order i am surprised it only went that high, but the pros will chime in.

why would you be terrified to put a wastegate on your turbo charged car?

 

[RmvBfrFlght]

The puck probably got pushed up against the port by the exhaust pressure. Then you have boost. Try tying it open.

RemoveBeforeFlight

 

[OneQuikSix]

without a wastegate in proper working order i am surprised it only went that high, but the pros will chime in.

I thought the principle worked in the exact opposite manner. More tension on the rod, more boost quicker. Less tension/no tension, the car should act sluggish and barely build boost if at all.

The puck probably got pushed up against the port by the exhaust pressure. Then you have boost. Try tying it open.

I'll have to give that a shot tomorrow.

 

[ts87ttype]

Your 20+ lbs is typical with an unported wastegate hole and the puck disconnected on most any turbo above stock.