Reviewed by Mark H (LAS VEGAS, NM) Reviewed for a 2007 Mazda 6 — Mar 22, 2013 11:19 PM

This was a good purchase for my 2007 Mazda 6i. It took a while to figure out the program but once I did, I felt a good difference in performance. Great value so far. I'm not too sure about better mpgs yet either.

Reviewed by Jason W (WOODBRIDGE, VA) Reviewed for a 2012 Mazda 3 — Feb 13, 2013 5:36 AM

Very noticeable gains in performance. Easy to use.

Reviewed by Brian D (RICHMOND, VA) Reviewed for a 2011 Mazda 3 — Aug 06, 2012 11:45 AM

The claim of +66 HP is a bit misleading, when in fact the true HP gain is only +10 over the max stock HP. Having said that, it's still a worthwhile product due to the vastly improved throttle response and drivability. And the removal of the annoying driveline-protecting delay of power during shifts makes this programmer worth every penny. As an added bonus, I've seen an improvement of 0.5 MPG in AVG fuel economy in the two weeks I've used it, and with premium gas prices as high as they are, every little bit helps.

Reviewed by Nikolai F (Flushing, NY) Reviewed for a 2006 Infiniti G35 — Jul 26, 2012 3:08 PM

After installing the disk set-up which was quick, the steps to download current information was really simple. Then the hook-up to the car and following instructions was as straight forward and as easy as the web site explains. The results will not overwhelm you, but are noticeable. My car was slightly quicker (1st and 2nd gear) and gear transitions a little smoother. Can't say I noticed an improvement in gas mileage just yet. Lastly, I unlocked the top speed which allowed my car to get to higher speeds with significantly less effort. Overall, I was pleased with the results. Next up, air intake maybe?

Reviewed by Timothy H (El Paso, TX) Reviewed for a 2007 Mazda 3 — Mar 06, 2012 3:25 AM

The hypertech programer really gave me what I was looking for it gave my Mazda Speed a better 1st and 2nd gear. Meaning the power really did not come on until you got to third gear but now with the hypertech it feels just right great job.

Reviewed by michael m (Springfield, VA) Reviewed for a 2003 Nissan 350Z — May 16, 2011 5:03 AM

Installation on my 2003 Nissan 350z was simple. After installation, throttle response seems quicker and fuel mileage seems better. Was a little surprised that only four changes were possible, and also that no adjustments for add-ons (intake, plenum spacer, HFC, headers, exhaust) were possible -- makes me think the A/F mixture will be too lean and engine failure may be in the offing. . .

Reviewed by scott d (SUISUN CITY, CA) Reviewed for a 2007 Mazda 3 — Apr 26, 2011 9:19 PM

Outstanding gains around 3000-4000 RPM and even a 1-2 MPG gain outstanding!

Reviewed by Kevin G (Wheaton, IL) Reviewed for a 2007 Mazda 3 — Apr 07, 2011 5:22 PM

Great for daily driver mazdaspeed3 with basic mods, much cheaper and easier than dealing with a tuner shop.

Reviewed by Antonio J (AURORA, CO) Reviewed for a 2007 Mazda 3 — Nov 07, 2010 7:23 AM

I used this to reprogram a 2007 Mazdaspeed3. I was amazed at the difference it made in the way the car drives. It completely changed the character of the car in a very positive way. It made me wonder why it didn't come this way from the factory and I was pleased with the car's performance before the flash. I can't imagine receiving these types of performance gains for the price in any other way. Great job, Hypertech.

Reviewed by Guy B (Atlanta, GA) Reviewed for a 2009 Infiniti G37 — Nov 02, 2010 1:04 PM

Received my programmer a few weeks ago and installed on my G37S as soon as I got home. Very easy to use, just follow the directions. On-screen prompts pretty much make it idiot-proof. I did notice there seemed to be a slight power increase and torque increase. Wasn't huge but helped. Will probably soon be installing a Stillen Gen 3 Intake to make additional gains.