• If you currently own, previously owned or want to own an Avalanche, we welcome you to become a member today. Membership is FREE, register now!

How much horsepower will...

Avy2004

Full Member
Joined
Jun 10, 2006
Messages
37
Location
Aliso Viejo, CA
Does anyone know how much true HP a Flowmaster 40, K&N intake & filter, and a computer tune (Hypertech, Predator) will add to a 04 Z71? Would these be the mods to do first to gain more horsepower?
 
From the #'s I have seen

Tune 25HP - 35HP (I picked up 34HP with LS1 edit and a few dyno runs)
Intake 5HP - 15HP
Cat Back 15HP - 20HP

looks like about (with drivetrain loss) 30HP at the wheels... could be more
 
Hello, definitely the first mods for power.  I would guess 20-30 hp.  Just a guess though.  I felt a differrence though and it comes into play even more if you tow.  Good luck and  :welcome:
 
I would say modestly that you will gain 25HP with those mods.

Sam
 
Avy2004 said:
Does anyone know how much true HP a Flowmaster 40, K&N intake & filter, and a computer tune (Hypertech, Predator) will add to a 04 Z71? Would these be the mods to do first to gain more horsepower?

My 2004 Z-71 with a Volant Cold Air Intake and dual exhaust with the predator saw about 25 hp and 3 mpg better fuel mileage. They were my first mods and at this point, I guess I should have let sanity take over and stop there.... Now I am too far into the darkside...... >:D
 
I say too a modest 25HP with those mods. Keep on modding  :cool:

Sam
 
Re-gear to 4.56.  It doesn't add power or torque, but it allows it get up to speed lots quicker.
 
Avy2004 said:
...What else can I add for more horsies?

A farm.... hehehehe
 
Back
Top