How much psi can stock internals hold?

[93tsiawd]

yea it has stock cams and stock intake manifold

[93tsiawd]

also 1 more question..what does a safe tune actually do? how does it differ from a regular dyno tune? will i be making less whp on a safe tune than i would on a regular dyno tune?

[Matt D.]

Safe means your shit isn't going to blow up. :) The tune is either safe or it's not. Good shops tune safe unless you tell them otherwise, but you're foolish to do so. A poor shop will think they're tuning good and safe, but in fact their tune is junk and your car is either in jeopardy of blowing up or it isn't making as much power as it should, or both.

[93tsiawd]

so i should just tell them i want a dyno tune?

[Matt D.]

so i should just tell them i want a dyno tune?
You don't understand. A tune is a tune. Whether it's safe or not is up to the tuner. That's where your trust is involved. Do you trust the tuner enough to make it so it won't blow up on the dyno or when you're beating on it on the street?

[93tsiawd]

yea i do. excessive autosports has a good rep here in sioux falls ive never heard of any complaints about them or their work

[jrohner]

I think what you need to understand, is that boost pressure is not the same thing as cylinder pressure. All boost pressure is, is the air pressure in your intake.

[93tsiawd]

aight thanks

[slowbubblecar]

The compression of your motor also matters. The lower the compression, the easier it will be to get a good (higher boost) tune on pump gas. Depending on the compression/condition of your motor, I am guessing you could run 18-25psi pump. Having 40k on the motor does not mean it will be in good shape either.

[93tsiawd]

yea i know. im was just trying to see how much psi i should be running for a dd. im thinking 16