thortonchiptuning.com

1.3
1.3 Based on 13 reviews

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Average Rating

1.3

/
5

13 Reviews

5 Star
7%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
93%

All Reviews

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Jimmy Cousins
I purchased a stage 3 for my Subaru outback, after driving over 700 miles I only noticed a 2 mpg di

I purchased a stage 3 for my Subaru outback, after driving over 700 miles I only noticed a 2 mpg difference, throttle response seemed better and so did the power . I reached out to the company via the chat and the company's response was quick , they suggested a reset ,which did not work then offered to exchange it for a different one . After receiving the new one and driving over 150 miles I only noticed 1 mpg better . After all that the 30 days has expired ( go figure ) .
Overall the chip is a failure does not perform as advertised, don't waste your money.

1
Date of experience: Apr 10, 2026
Jimmy Cousins
I purchased a stage 3 for my Subaru…

I purchased a stage 3 for my Subaru outback, after driving over 700 miles I only noticed a 2 mpg difference, throttle response seemed better and so did the power . I reached out to the company via the chat and the company's response was quick , they suggested a reset ,which did not work then offered to exchange it for a different one . After receiving the new one and driving over 150 miles I only noticed 1 mpg better . After all that the 30 days has expired ( go figure ) . Overall the chip is a failure does not perform as advertised, don't waste your money.

1
Date of experience: Mar 25, 2026
Kori
These chips do nothing for performance.

These chips do nothing for performance.I returned both that I bought and they refuse to refund me for 1 saying they never got it. I returned both of them in the same box so they had to have gotten both if they got one.

1
Date of experience: Mar 18, 2026
Zack Selmon
Terrible business don’t waste your money

Terrible product, terrible customer service. Do not waste your money. The performance chips no matter what stage may cause damage on your vehicle. They will fight like no other to return and won’t refund any shipping charges including the charges to return it if you can make it happen. Yes it’s a legitimate business but it’s a scammy business better off shopping at Temu

1
Date of experience: Feb 03, 2026
Bret Anderson
Did nothing for me

Did nothing for me, company doesn't care and will not help or refund you on a product they guarantee...Also Left a review several days before this one and still is not posted to their site...so if I gave them 5 stars it would have been posted...

1
Date of experience: Jan 05, 2026
Louis Ruth
Decreased mpg

Purchased a stage 2 Thorton tuner module, then after installing it and driving the recommended 150 miles, we watched our 2025 KIA Sportage Hybrid SX Prestige loose mpg. Before the install we were averaging 38-40MPG, after install we lost 6+ mpg averaging 32-33mpg. The module curves the power-band air/fuel mixture with very high revs.We emailed the customer support and we were advised to reset the module, then reinstall it and then drive more miles again.We had enough and told them we wanted out money back. They said "unfortunately your past the 30 day money back guarantee (by 4 days) we can only replace it for you.Customers beware!!"Negative highlights"The owner of the website is using a service to hide their identity on WHOIS.This website has received mainly negative reviews

1
Date of experience: Nov 07, 2025
Derek G
It appears to have not done anything

It appears to have not done anything, I didn't notice in difference in performance.

1
Date of experience: Oct 25, 2025
Chandler
!!!! SCAM ALERT !!!!!

!!!!!!!!!!! SCAM ALERT!!!!!!!!They scammed me into keeping the chip for replacement promising to process a return if the second chip did not work. Then when the 2nd chip did not work she told me I was past my return window and I could not return it. I kept on fighting with her but she kept going around in circles and eventually hung up on me. This is a strategic scam company, DON'T TRUST THORNTON CHIP TUNING!!!!!

1
Date of experience: Oct 02, 2025
Steve O
DO NOT BUY!!!

DO NOT BUY!!!Purchased two for two different vehicles. Received 3 and was charged for 3. These are NOT returnable as per the fine print due to being on sale. They are permanently marked at 50% off. I received the same exact module with different stickers on the boxes. Installed anyway as I already spent the money. Waited for performance gains as per the instructions. Almost a month later and no power or fuel economy difference. Save for a real tune. This is a fake and a complete waste of money. Total garbage.

1
Date of experience: Oct 01, 2025
Robert McKinney
They can’t even send me the correct…

They can’t even send me the correct chip ! Very disappointing customer service!!

1
Date of experience: Sep 15, 2025

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