Ok. here is the story. I have a boosted B18B1. I had a waste gate with a five pound spring in it. I got a new waste gate that soposedly had a ten pound spring. it turns out that my exhaust manifold was cracked and I was getting a bogus vacum reading. I welded my manifold shut and I now find out that my waste gate has a 15 pound spring in it.

here are my questions.

1. have I been puting 15 pounds into my cylinders all along? or has the crack in my manifold let the pressure drop.

2. if I have been pushing fifteen pounds into my cylinders all this time (about two months now) and have done so without problems, should I be worried about anything breaking? I am mainly conserned about bending my rods.

any input is greatly appreciated

O, and btw. I am running a stock bottom end, the main reason for my consern.

 

I'm sure there are several people running 15 psi on there stock LS's, but this is with a very good tune.. and depending on turbo size.

I thought the stock map sensor only supported so much boost.. I don't see how your running 15lbs.

To answer your question, no i would not recommend running 15lbs unless your tuned for it and have a wideband.