Best bang for the buck burban upgrade

homebrew

New member
Looking for some more ummpff out of my 03 suburban with a 5.3. I had an 02 Avalanche with the same motor which had a k&n CAI, cat back exhaust, and a super chips programmer. With that setup I was able to squeeze out 17.5 MPG, currently the burb is only getting 15 at its best.

Looking to spend around 600, Im thinking of doing a electric fan swap along with a good cat back. Looking for other suggestions(besides buying a honda)
 

POSJ

New member
Put a 6.6L Duramax in it...

On a realistic note: Get another programmer on it, computer tuning is the best way to improve vehicles from 01-current. Intake and exhaust might help a little but changing the tune will be the biggest. Are you wanting MPG or power? Those two don't generally go together with gassers.
 

homebrew

New member
MPG's are the main goal. I like the tuner because you can gain the MPGs then push a few buttons and get the extra ponies.
 

POSJ

New member
I'd do a good tuner, cheap exhaust and intake and call it a day. Anything after that is just a waste IMO. The e-fan could help I guess but I don't know how much $$$ it would cost and be worth it.
 
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