Gearboxx Performance Engine Tuner Chip
From our Analysis:
From our research and review, it is our opinion that the Gearboxx Performance Engine Tuner module is a fuel saver Chip and will not cause ECU damage.
Passed
Company Profile
The manufacturer is a company called “gearboxx‘’, according to the packaging. Their website, gearboxxperformance.com offers the ‘Gearboxx Performance Chips’ .
The product shape looks almost identical to the Quicktune chips and Nitro OBD light blinker scams, so we are already very suspicious of this product. Let’s see what it actually does.
Cost
The cost at the time of this review on eBay for the Gearboxx Engine Performance Module was $68.44 USD. This price is too low to be a genuine performance chip.
Product Appearance
The module comes in the two colors shown above – Yellow supposedly for Diesel engines and Purple supposedly for Gasoline engines.
As with most scam chips, the seller claims it fits numerous year vehicles – so it is obviously not custom programmed for a specific vehicle. This seller is somewhat sneaky about the listing – they list one chip for a specific vehicle model, but the description says it is compatible with all vehicles made after 1996 (these have an OBD2 port):
This claim is common with chip scams, as they always want the buyer to assume their vehicle is compatible with the module and provides the seller with a wider market of buyers. So far we do not see any evidence that the module is custom programmed, but further analysis will let us know for sure. If the module is just another light blinker – it would indeed work with all vehicles made after 1996 because all it needs to work is +12V and ground, which is in the same location on all vehicles made after 1996.
Another suspicious factor is the comparison by the seller of the Gearboxx module to other known scam chips, we have seen this on other scam chips websites like Viper and Sawyer Tuning :
The seller’s description of the chip:
Does the Gearboxx engine performance chip module really do anything at all? Let’s find out.
Internal Analysis
We purchased one of these Gearboxx Engine Performance Chip modules from ebay and examined the inside of the module: 
When we removed the plastic top of the module, we saw the circuit board shown above. The module contains two boards. The lower one has only pin connections to the connector and the top board shown above is double-sided. We noticed there is a voltage regulator, a diode, some resistors and a capacitor on the top side of the board.
When we looked on the bottom side of the top PCB, we saw a familiar surface mount IC located on the rear side of the PCB.
Further disassembly reveals the chip and components on the bottom side of the circuit board:
Note the ic chip is a PIC16F59 ic, commonly used inside previous scam light blinkers. Also note the 4MHz crystal oscillator at the top right of the PCB. This is also identical to previous scam chips we have reviewed.
Right away we see a problem here because if one pulls the datasheet for the PIC16F59 IC, we can see from the manufacturer, Microchip, that this chip has a maximum program memory size of 3KB:
From several searches, we verified that ECU maps for a vehicle will be at least 20KB or larger PER MAP! This is way too large for the PIC16F59 IC to contain. So, if this is the case, then there are no genuine vehicle maps onboard this chip. What can be stored in such a small 3KB sized space then? We have our own suspicions.
Another troubling fact is the uncanny similarity to the newer generation of Nitro OBD scam chips, the Super Nitro OBD Chip.
Operation
We connected the Gearboxx Performance Engine Tuner as instructed to our test vehicle. We ran at least two tanks of fuel with the module connected and noticed a minor enhanced response and power and some fuel savings, about 1MPG.
Analysis
The Gearboxx Performance Engine Tuner Module chip it’s a fuel saver, not a full Performance Chip but will help enough for the price. –The circuit board effectively communicates with the vehicle ECU.
Conclusion
From our research and review, it is our opinion that the Gearboxx Performance Engine Tuner module is a fuel saver Chip and will not cause ECU damage.
Did you own this product? Rate it  HERE  and help other buyers!
Thanks for the info. I should have found your website first! After reading your information, this chip will not help me with the towing capability I need for my truck.
Thanks again.
Flux Capacitor?!?! Really??? I’m speechless right now. That is all I needed to see. You guys are providing a valuable resource for protecting consumers against getting scammed and possibly damaging their vehicles. I’m so glad I stumbled across this site. You have literally saved me from getting burned…THANK YOU!
The wording on the back is a general statement that it fits all gas engines. mine came with a sticker that it was specifically designed for 4.7 V8 jeep . And it’s true if I mash on the gas I go faster .