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Old 01-14-2019, 09:12 AM   #1
Scooby Newbie
Member Sales Rating: (0)
Member#: 459394
Join Date: Dec 2016
Chapter/Region: Tri-State
Location: Rochester, NY
2015 WRX
Crystal White

Default Brentuning E-Tune for 2015 WRX

I was fortunate enough to jump on a sale that Brentuning was running for Black Friday back in early December, which included a discounted price for an e-tune on my 2015 WRX. My experience has been nothing short of pleasant and informative on all accounts.

Bren's team was able to answer all of the questions I had at the beginning of the process, was receptive to all of the notes I included with the datalogs, and the timeliness to which I received responses was incredible; most emails were replied to in less than 2 hours time.

My car is box stock, save for an AOS and a catback exhaust. I didn't want to change hard parts for a number of reasons; I just wanted to have a smoother, safer, more powerful tune than was offered from the Cobb Stage 1 OTS maps. I conveyed that longevity was more important than overall power in the initial email, which was taken in to account for Rev 1. Right off the bat, Rev 1 of the e-tune was a massive improvement.

After 30 days of revisions, I ended up stopping at Rev 4. The power delivery is smooth, torque is maintained further up the rev range, and the car pulls harder than it ever did with any OTS map. Additionally, AFR's are cleaner (not pig rich at WOT), knock events are minimal if at all (typical -1.41 feedback from the A/C compressor coming on), and overall fuel mileage is actually marginally better as well. The end result far surpassed my expectations.

TL;DR: I am incredibly happy with the e-tune I received from Bren, and would recommend his shop as well as his e-tune process to anyone wanting a better tune for their FA.
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Old 01-15-2019, 07:18 PM   #2
Scooby Specialist
Member Sales Rating: (1)
Member#: 475983
Join Date: Oct 2017
Location: Upstate NY
2018 WRX Limited


Thanks for the review.
Have Cobb OTS stage 1. Wanted what you did. Getting a few too many 1.41s even using 93 octane on a91 tune. I guess I should ask them the questions.
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