2000 5.3?

[chevync]

I have a 2000 Tahoe (nbs) 2wd, with 3:73, automatic, CAI (next week), what kind of horsepower increase from a tune? btw its in the shop now for a complete engine rebuild and flowmasters.

 

[BlackBearPerf]

I have a 2000 Tahoe (nbs) 2wd, with 3:73, automatic, CAI (next week), what kind of horsepower increase from a tune? btw its in the shop now for a complete engine rebuild and flowmasters.

We typically see 10-25 HP and 1-2 MPG gains; of course vehicle condition, other modifications, and the quality and octane of gas you use are factors to consider (higher octane, provided it is good quality, will typically yield better MPG results).