Performance Chip Adding 50hp??

[codered]

Originally Posted by Stellar

While searching for the best price to purchase either the superchips cortex 2950 or diablosport predator hand tuners I came across a site offering performance chips for the Hummer. SLR Motorsports is claiming there chip adds roughly 50 hp while adding additional mpg with their performance chip. Anyone had any experience with this company and their performance chips?? Thanks in advance..

Don't waste your time and money. find somebody that is able to do a dyno tune on the hummer. Trust me from experience. U can only do so much with a programmer and even less with a "chip."

[twr]

Hi [find somebody that is able to do a dyno tune on the hummer] i am with codered on this.

[ROUSHDEMON]

dude.... trust me on this.... More HP always requires more Gas, you're never gonna get more mpg if you're adding HP to any engine. You might be able to "modify" it so there is no Loss of hp and you might gain some already lost hp by adjusting the right fuel/air ratio or whatever, but never add a lot of hp without taking from your mpg.

[twr]

Hi ROUSHDEMON is correct. The formula for making HP, the more fuel you can burn affective from your tank the more HP you will make. Anyone saying they will give you 50 HP and better gas milage is full of Chit unless your truck is running on 7 cyclinders to begin with. Their maybe a very small HP gain that would also increase you milage but not 50 HP.

[splne1]

IT"S A HUMMER!!!!! WTF with MPG???? I mean seriously who drives a hummer for gas mileage..........hmmmmm??????? YEAH!!!! If your looking into that go with a diesel conversion.

[timgco]

Originally Posted by splne1

IT"S A HUMMER!!!!! WTF with MPG???? I mean seriously who drives a hummer for gas mileage..........hmmmmm??????? YEAH!!!! If your looking into that go with a diesel conversion.

true!

BTW- it can be done in 4 days.

[HummerJim]

I agree that those chips are just a rip off. To make more horsepower "RELAIABLY" you need more cubic inches. The Lycoming 0-540 (that's 540 cubic inches and a 6 cylinder) produces 260 horsepower in a Piper Comanche at 2500 rpm and some have gone 2000 hours over their recommended TBO, that's the equivalent of 250,000 miles in a vehicle if you consider the fact they are always under load, just like a boat engine, very little unloaded time.
Cubic inches make horsepower and the weight and aerodynamics of what you're moving determine mpg or gallons per hour PERIOD. If you limit the cubic inches then you have to go with the heads, the compression ratio, the cam, the valves, the chip, the induction system and you seriously affect durability. I know you probably know all this, but take it from an old fart who used to race sprint cars, when you soup them up, they like to come apart. I had a chip in a Corvette and it did very little for it except make it hard to start in the winter and when it was hot.

[Hellz]

Originally Posted by timgco

true!

BTW- it can be done in 4 days.

wow..........

is that for a backyard mechanic too?