BrenTuning E-Tuning Service – What is it? Is this service for you?
BrenTuning E-Tuning Service – What is it? Is this service for you? 06/22/17

BrenTuning E-tuning service, is it for you?

One of the most popular services is our E-Tuning service. Some people hear this term but aren’t exactly sure what it is. We would like to clarify what this service is, if it is for you and what should be expected from the customer and tuner.


E-Tuning is the art of tuning an automobile remotely, when the tuner is no where near the vehicle. This is commonly done through the Cobb Accessport, although there are other mediums in which you can accomplish this. We will email you a conservative “basemap” to start your datalogging from. A basemap is a safe starting point your specific vehicle and modification set, datalogging is done through the Accessport under specific conditions including idle, part throttle cruising and wide open throttle (WOT) pulls.


Once you pay for the e-tuning service, you will be asked questions in regards to your specific vehicle, modification set, Accessport information amongst other things. You will be sent a detailed instruction sheet as well and some items for you to sign. You should have a Windows or MAC based computer that is reliable throughout this process and setup with Cobb Accessport Manager Download AP Map manager here.

Once you reply with the requested information, read, understand and sign the directions, you can set your Accessport up to datalog the specific parameters noted. The basemap should be created and sent to you within 48 hours Monday through Friday. At this point you can load the basemap to the Accessport through AP Map manager and then load to the car. Following the datalogging guidelines, you can start with an idle datalog, part throttle cruise datalog and then WOT datalog. Once complete, plug the Accessport into your computer and save the data to your computer. Create an email chain which you will use throughout the process and send the 3 datalogs and your basemap to the BrenTuning team via e-mail. They will review the datalogs and send you back a revision which is a revised version of your basemap based off of the received data, this happens within 48 hours Monday through Friday. You will do the same process with this revision. This service will continue for 30 days or until the BrenTuning team has found a safe, powerful and most of all, reliable point to stop the process.

Future revisions and modification changes:

We are always loyal to our customers who decide to come back. As you know, modifying your car is fun and can become addicting, we do not expect you to pay the same rate as you did initially as a good portion of the process has already been started and honed in. We offer discounted rates for retuning customers with new modifications. Retunes start at $100 and go up from there pending what is being added. While some modifications are quick and easy, going from pump fuel to flex fuel is difficult and requires additional time/cost, pricing is tiered based off of this. Don’t forget, we always discount parts sales for existing and can ship anywhere worldwide!

Is this service for you?:

Many people get themselves into an e-tuning service and find out the car they thought was perfect and “just needed a tune”, in fact has mechanical issues which tuning cannot alleviate. If you are not comfortable trouble shooting, working through problems and diagnosing potential issues, this service is not for you. If you cannot follow instructions well, this service is not for you. If you do not trust your tuner and battle them and fight their notes and ideas, this service is not for you. Our primary goal is to give you a great product which is safe, fast and reliable, please help us do this by following instructions and listening to the tuner who has worked on and tuned hundreds and in some cases thousands of the same vehicle you have. We do not want to make you check for boost or vacuum leaks for fun, we do it so that you have a safe car.

Some modifications including methanol and flex fuel are expert level only, if you do not have the ability to work on your own vehicle or want to help yourself, please consider finding a local tuner where you can simply drop the car off and come back with a finished product. Dialing in flex fuel and methanol is tedious but is done successfully here multiple times per week. The customers who make this process simple and want to work with us and listen to our ideas end up with the best and most powerful cars.


What we expect out of a customer is simple — we want a car that is sorted of issues and problems prior to starting the tuning process. If you know you accidentally filled up with 87 octane 2 days ago, do not start the e-tuning process until you have fresh Shell V-power in the tank. If you know you have a giant boost leak that is getting fixed Friday, do not start the e-tuning process Tuesday. If your car has a check engine light, let the sales reps know BEFORE you purchase your e-tune. We expect you to understand that mechanical issues can arise, installs can be done wrong and can extend the timeline on this service, service is provided for 30 days, we can offer additional extended time for added cost.


– E-tuning service is for 30 days.
– E-tuning service is Monday through Friday
– Revisions can take up to 48 hours to receive, very rarely during holiday’s or extremely busy times it can be longer.
– Shell V-power fuel is our exclusive recommendation.
– Torco is a good octane booster if you have poor fuel quality.
– Phone support is limited during the e-tuning process and should only be used if all other channels have been exhausted.
– Do not email screen shots of the AP with Min/Max values, in particular fine/feedback knock. We need datalogs not short screen grabs of -1.4 feedback.

What can we e-tune:

All Subaru’s (pending modification list) with a Cobb Accessport
R35 GT-R
Evo X


E-mail us at


To see if your mod list is supported, please email is at or 508-762-1769. You can also purchase directly though our webstore link Purchase here

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  • “ Professional, knowledgeable and friendly. The BrenTuning team delivered excellent work and answered all of my questions. Their E-Tune service was a great experience and I would do it again. ”

    Chris Cioffari May 12, 2017
  • “ I highly recommend Bren Tuning. I've gone to see them twice with my 15' STI, first time after getting the access port and installing an intake and last week for GS downpipe, N1 cat back and of course another tune. Couldn't be happier with the results, car runs and sounds even better that I expected. ”

    Troy Cregger May 12, 2017
  • “ Had my 2010 335xi serviced here and I have nothing but good things to say about these guys. I had a lot of work done at once and it all came out perfect. Definitely recommend and you are guaranteed to be pleased with the results! ”

    Dariush Vafaee May 12, 2017
  • “ Just finished getting a e-tune on my 15 wrx and its amazing! Car runs so smooth and has so much power! I highly recommend them for anything you need for your car. I will be taking the 3 hour trip to get more work done. Customer service was great and speedy! ”

    Chris Hernandez May 12, 2017
  • “ I've been working with Bren for over a year now on my 2015 STi. It's not often I find a shop that shares my perspective when it comes to my car. Down to earth, "REAL' car-guys. They treat my car as if it were their own, and do their best to exceed my expectations every time. I also use them for maintenance on my car. Its where I prefer to bring my car, because I know nothing will be overlooked. And when track days come around , they'll be there too, to help and advise me every step of the way. I cant ask for anything more than that. ”

    Mar Salisbury May 12, 2017
  • “ Bren seriously took his time with my tune and it was absolutely amazing. Really worked hard to get it right and when I saw that dyno sheet I almost wanted to cry from joy, power curves were amazing and he ended up getting me perfectly to 337hp 337tq. I couldn't be more happy with numbers like that. Not only was the tune amazing, but the customer service. I had a 330 spot on a Friday, ran into some trouble getting there and wasn't able to arrive until 45 minutes after my appointment. I simply called them, and was told exactly this "hey man no worries we understand, get here whenever you can and we'll make sure we take care of you tonight." To me... That says it all about Bren right there. Excellent work, you've got a lifetime customer here. ”

    Jamie Pereira May 12, 2017
  • “ Had an install and protune done with Bren and the team on my 2015 WRX. Car put out absolutely stunning results! Bren really took time and patience getting the tune right. After the dyno tune he sat with me for a ride along to make sure everything was to my liking. Great team, very friendly, down to earth and professional! ”

    Vahe Keshishian May 12, 2017
  • “ Got my 2015 Wrx e-tuned by Brentuning and could not have been any better. All my questions and concerns were answered in a timely fashion along with the tuning process itself. Car is now so much more drivable with the rev hang removed, pulls much smoother, and pulls way harder all the way to redline. ”

    Perry Alpert May 12, 2017
  • “ Hands Down...The BEST Customer Service Ever. I have a Stage 2+ 2012 STi and worked with BrenTuning to have a Protune added. The car feels completely different. There is significantly less delay in response time. The boost holds much better and is a much smoother pull. I can also feel a significant gain in tongue. Their response time was incredible though. Communication was done through email and the turn around time was instantaneous, literally felt like texting. I would highly recommend BrenTuning for great work and outstanding customer service. ”

    Ben Weber May 09, 2017
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