Stock pulley to 3.3" no tune?

[Black01Vert]

Eaton swapped mach here,

Had it dynotuned on stock pulley 411rwhp and I wish I had gone with a smaller pulley.. All I really want is +2/3 lbs of boost because my pistons/rods are not forged. (Trying to stay ~450rwhp)

Now I have a wideband on my car and I am slightly rich at about 11.1-11.3 throughout the powerband in all gears. Is it possible that going to a 3.3 will work without a retune and the afr will still even better than they are now?

Thoughts? Has anyone had a slightly smaller pulley without a retune?

 

[big dad]

I believe you can go as low as a 3.2" upper without a tune. No lower than that.

 

[Jefe]

Why arent your rods/pistons forged?

 

[Black01Vert]

Why arent your rods/pistons forged?

Originally thought I'd be happy with stock eaton low boost.. Going to have motor built over the winter and TVS/e85 is the plan

 

[Jefe]

Just saw your username, that would explain it!