power / performance programmers

[pokerman11]

Does anybody make a programmer for the trailblazer?

I have a 4.2l 2006 and can't seem to find any.

Have looked at Hypertech, Jet, superchip

Anyother suggestions?

Are these things also worth the money? Mostly wanting to max HP and perhaps bump up MPG

[MT-2500]

Very hard to get HP and gas mileage together.
Allso programers may be illegal under tapering with emissions.

http://www.epa.gov/air/caa/title2.html#iia

http://www.epa.gov/air/caa/


http://www.epa.gov/air/caa/caa203.txt

3)(A) for any person to remove or render inoperative any
device or element of design installed on or in a motor
vehicle or motor vehicle engine in compliance with regula-
tions under this title prior to its sale and delivery to the
ultimate purchaser, or for any person knowingly to remove or
render inoperative any such device or element of design
after such sale and delivery to the ultimate purchaser; or
(B) for any person to manufacture or sell, or offer to
sell, or install, any part or component intended for use
with, or as part of, any motor vehicle or motor vehicle
engine, where a principal effect of the part or component is
to bypass, defeat, or render inoperative any device or
element of design installed on or in a motor vehicle or
motor vehicle engine in compliance with regulations under
this title, and where the person knows or should know that
such part or component is being offered for sale or
installed for such use or put to such use; or




http://www.epa.gov/air/caa/caa205.txt

SEC. 205. CIVIL PENALTIES.
(a) Violations.- Any person who violates sections 203(a)(1),
203(a)(4), or 203(a)(5) or any manufacturer or dealer who
violates section 203(a)(3)(A) shall be subject to a civil penalty
of not more than $25,000. Any person otherthan a manufacturer or
dealer who violates section 203(a)(3)(A) or any person who
violates section 203(a)(3)(B) shall be subject to a civil penalty
of not more than $2,500.

[pokerman11]

They are not illegal, you are not changing emmissions hardware, only tuning your engine, and in fact generaly improving emmissions. Legal in all 50 states.

Especialy usueful if you change tire size (which I want to do), as well as helps to program the best fuel/spark settings all along the RPM band, as well as fine tuning your shift points.

I have seem them work and add value, just can't find one for this TB.

[MT-2500]

Originally Posted by pokerman11

They are not illegal, you are not changing emmissions hardware, only tuning your engine, and in fact generaly improving emmissions. Legal in all 50 states.

Especialy usueful if you change tire size (which I want to do), as well as helps to program the best fuel/spark settings all along the RPM band, as well as fine tuning your shift points.

I have seem them work and add value, just can't find one for this TB.

Better read the full 203 and 205 section of epa clean air act.
If you tapper with the VCM and engine tuning you are tampering with emissions.

[pokerman11]

The EPA law is horrible piece of legislation; you can interpret it that bringing your dog who flagellates too much in your vehicle violates the law. The legislation is not intended to prevent owners/service technications from improving engine tune and in cases providing better combustion and reduced emissions.

Like aftermarket catalytic converters most of these types of products are in cleared via CARB executive orders. They are not illegal, in fact just the opposite they have been certified as being legal.


Very simply they are legal and very useful. I just want to find one that works on my TB.

I really don’t care continuing this legal discussion anymore. If you want to then please start your own thread on that subject

Anybody find anything that works on TB’s with a 4.2L?

[MT-2500]

Originally Posted by pokerman11

The EPA law is horrible piece of legislation; you can interpret it that bringing your dog who flagellates too much in your vehicle violates the law. The legislation is not intended to prevent owners/service technications from improving engine tune and in cases providing better combustion and reduced emissions.

Like aftermarket catalytic converters most of these types of products are in cleared via CARB executive orders. They are not illegal, in fact just the opposite they have been certified as being legal.


Very simply they are legal and very useful. I just want to find one that works on my TB.

I really don’t care continuing this legal discussion anymore. If you want to then please start your own thread on that subject

Anybody find anything that works on TB’s with a 4.2L?

No state or county or city law can override federal law.
If you operate your vehicle on a federal funded highway you are subject to federal and EPA laws and regulations.

The EPA clean air act/law does not cover weather programmers are legal or not.
But does deal with and cover anyone tampering with emissions.

And provides a stiff penalty and also jail time for anyone that does.