that other battery would still have to be charged by an alternator.

 

Not to mention that the kit in the link is a glorified bilge pump from a boat or other such application. They are NOT meant for automotive air induction use. I highly doubt that they would be able to create a static dead-head pressure of 1psi on their own, let alone 1psi on an engine that normally pulls -10psi during normal operation.

Now in a perfect world, our 4.3L engines injest 0.1518531cu.ft. of air per 2 revolutions of the crank. So at 2000rpm, we are flowing ~152CFM of air. Now at 5000rpm, that balloons to 760CFM. Now due to pumping losses, pressure differentials, etc, we do not flow that much air, but... Now I stated this just to let you know what kind of flow is required. Something like that could NEVER supply that kind of volume. It would only end up as a restriction.

 

wow. thanks for all the info. def saved me about a hundred bucks. i'm just lookin for some cheap performance mods and that looked appetizing lol

 

Lol. No prob. Cheap performance mods? Unless it is used stuff or crappy stuff, cheap and good performance mods are hard to find. Intake, headers, exhaust, and reprogram ecu: i'd say about $1500. But, it's a great way to start getting some GRUNT out of these underpowered Blazers.

 

thanks man. reprogramming ecu?

 

yea...basically hooking up a tuner to it and letting it work its majic...you can adjust shift points, mess with a/f, and free up HP. Very nice

 

there is no cheap forced induction my friend-

i say-

Edelbrock TES headers/y-pipe
K&N intake
Ported TB
2.5" exhaust straight through
Remove cats and resonator
MSD coil/wires
Shift kit
3000stall torque converter
dyno tune- then cam/heads/valvetrain if you want some serious power n/a