performance chip? - TerrainForum.net: GMC Terrain Forum
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post #1 of 31 (permalink) Old 01-27-2010, 01:41 PM Thread Starter
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performance chip?

In anticipation of getting my new terrain soon (ordered in Nov and supposed to be delivered to dealer this weekend, Yea!) I was looking at the available accessories on Ebay and saw a "performance chip" for sale. Supposed to improve hp and gas mileage. Has anyone ever installed something like this before or have you done it for your terrain? Is it worth it? Says it doesn't harm the car in any way and doesn't void the warranty but I'm skeptical.

http://cgi.ebay.com/ebaymotors/PERFO...item19b983997a
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post #2 of 31 (permalink) Old 01-27-2010, 08:42 PM
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Re: performance chip?

Probably just a resistor in a box mod, dont do it.

The bitterness of poor quality remains long after the sweetness of low price is forgotten.
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post #3 of 31 (permalink) Old 01-28-2010, 01:56 AM
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Re: performance chip?

$9 for the mod, $6 for shipping.
Up to 50HP and 15MPG gain?
Highly unlikely, IMO and why mess with a brand new vehicle?
The old axiom "If it sounds too good to be true, it probably is" most likely applies in this case.
I'd wait for the engine to be tested/tweaked by some pros before attempting anything "performance enhancing", however minor, on my own vehicle.


[color=white]2010 Terrain SLT-2 (rec'd Sep/09)[color=silver]<br />AWD V6 Carbon Black Metallic w/ Jet Black Int.<br />All available options<br />19" Chrome Rims<br />Window Weather Deflectors<br />Roof Rack Cross Rails<br />Cargo Cover, Liner, Net, Organizer<br />Front & Rear Splash Guards<br />Weathertech Floor Mats
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post #4 of 31 (permalink) Old 01-28-2010, 10:58 AM
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Re: performance chip?

Given how competitive the vehicle market is nowadays, you can bet that GM has programmed the ECU about as good as can be expected, without starting to make big sacrifices elsewhere. If GM could have magically gotten another couple MPG they would have already. Why would they release an engine that does 180HP and gets 32MPG when they could easily release an the same engine with 200HP and 37MPG? Like gearhead says, if it sounds too good to be true...

I do a lot of aftermarket ECU tuning on sportbikes, and by itself, reprogramming the ECU doesn't do very much. On an high-performance 1L engine you get 2 or 3 more horses at the rear wheel. Last bike I put a power-commander on it went from 158rwhp to 160rwhp. Whoopie-do. Only if you replace the whole exhaust system and intake do you start to see double-digit gains.

I'd wait until a more reputable tuning shop releases a product, and/or until you're ready to say goodbye to your warranty.

Sold my 2010 Piece o' crap 2010 SLT-1. Don't buy a terrain!
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post #5 of 31 (permalink) Old 01-28-2010, 12:46 PM
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Re: performance chip?

Remember, if you do end up "Chipping" your vehicle with a legitimate computer controlled module (not the transistor in a box scam) you'll end up voiding your 5 year powertrain warranty.

2010 GMC Terrain, SLE-2, 3.0 V6, Mocha Steel, light titanium interior, convenience & comfort package, towing package.
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post #6 of 31 (permalink) Old 01-28-2010, 02:25 PM Thread Starter
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Re: performance chip?

Thanks for all the feedback everyone. Definitely think that the $9 version sounds fishy and agree that there probably isn't that much to gain from what GMC has already tweaked to get marketable numbers. If I add any accessories, will stick those that enhance visually and not worry about performance (since I'll already be gaining 5-7 mpg over my last SUV
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post #7 of 31 (permalink) Old 01-28-2010, 08:58 PM
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Re: performance chip?

Quote:
Originally Posted by scottyyyc
Given how competitive the vehicle market is nowadays, you can bet that GM has programmed the ECU about as good as can be expected, without starting to make big sacrifices elsewhere. If GM could have magically gotten another couple MPG they would have already. Why would they release an engine that does 180HP and gets 32MPG when they could easily release an the same engine with 200HP and 37MPG? Like gearhead says, if it sounds too good to be true...

I do a lot of aftermarket ECU tuning on sportbikes, and by itself, reprogramming the ECU doesn't do very much. On an high-performance 1L engine you get 2 or 3 more horses at the rear wheel. Last bike I put a power-commander on it went from 158rwhp to 160rwhp. Whoopie-do. Only if you replace the whole exhaust system and intake do you start to see double-digit gains.[/color]

I'd wait until a more reputable tuning shop releases a product, and/or until you're ready to say goodbye to your warranty.
Very good points, scottyyyc.
The engine has been dialed in by GM engineers for maximum performance and drivability over a wide range of conditions and temperatures.
Modifying factory timing/airflow/fuel control settings without changing the intake or exhaust would probably cause more harm than good from a drivability standpoint, IMO.
Remember, with the Direct Injection system, a precise amount of fuel is delivered to the combustion chamber at exactly the correct time for maximum power, lower fuel consumption and cleaner burn.
You'd have to know the software/hardware timing extremely well to make beneficial adjustments.
It's highly unlikely that anyone without some inside help is privy to that type of info right now to be able to release it to the public, especially not for 9 bucks IMHO.

[color=white]2010 Terrain SLT-2 (rec'd Sep/09)[color=silver]<br />AWD V6 Carbon Black Metallic w/ Jet Black Int.<br />All available options<br />19" Chrome Rims<br />Window Weather Deflectors<br />Roof Rack Cross Rails<br />Cargo Cover, Liner, Net, Organizer<br />Front & Rear Splash Guards<br />Weathertech Floor Mats
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post #8 of 31 (permalink) Old 01-28-2010, 09:19 PM
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Re: performance chip?

Quote:
Originally Posted by ldr04
Thanks for all the feedback everyone. Definitely think that the $9 version sounds fishy and agree that there probably isn't that much to gain from what GMC has already tweaked to get marketable numbers. If I add any accessories, will stick those that enhance visually and not worry about performance (since I'll already be gaining 5-7 mpg over my last SUV
Indeed, probably best to play it safe and run with what GM has offered up for now.
Maybe in the near future (a few years, perhaps?) someone will come out with some tweaks that may offer advantages over what's come out of the factory, performance wise.

[color=white]2010 Terrain SLT-2 (rec'd Sep/09)[color=silver]<br />AWD V6 Carbon Black Metallic w/ Jet Black Int.<br />All available options<br />19" Chrome Rims<br />Window Weather Deflectors<br />Roof Rack Cross Rails<br />Cargo Cover, Liner, Net, Organizer<br />Front & Rear Splash Guards<br />Weathertech Floor Mats
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post #9 of 31 (permalink) Old 01-29-2010, 09:50 AM
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Re: performance chip?

Quote:
Originally Posted by ldr04
In anticipation of getting my new terrain soon (ordered in Nov and supposed to be delivered to dealer this weekend, Yea!) I was looking at the available accessories on Ebay and saw a "performance chip" for sale. Supposed to improve hp and gas mileage. Has anyone ever installed something like this before or have you done it for your terrain? Is it worth it? Says it doesn't harm the car in any way and doesn't void the warranty but I'm skeptical.

http://cgi.ebay.com/ebaymotors/PERFO...item19b983997a
I am not sure how much "car knowledge" you have, so I will say this gently. But those things are truly a scam, it's best to stick with "if it seems to be good to be true, it probably is."

There are a lot of car forums (similar to this one) on the internet, do some checking on the Pontiac Grand Prix, Chevrolet Corvette, I am sure you will find some forums like this. There is a wealth of knowledge on these forums and some of the are "real car guys".

These chips really are a scam, and I would strongly discourage anyone from buying them, as they simply don't work.

Great thing that you asked here and I am certain you feel better about keeping the $9 in your pocket.

Cheers
TG
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post #10 of 31 (permalink) Old 01-29-2010, 11:10 AM Thread Starter
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Re: performance chip?

Not much car knowledge when it comes to engine-type of stuff so it's defininately worth asking people with more experience and knowledge. It's nice to have forums like this to do that . Was mostly wondering about performance chips in general and warranty issues but these days, it's nice to keep the 9 bucks in the pocket too .
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