Beware of HP4 maps on NON HP4 Bikes
Beware of HP4 maps on NON HP4 Bikes 05/21/17

So not too long ago, an HP4 specific "performance" file was leaked and sold to a bunch of tuners through a website and those who didn't know better are copy and pasting this information into base model bikes.

So not too long ago, an HP4 specific “performance” file was leaked and sold to a bunch of tuners through a website and those who didn’t know better are copy and pasting this information into base model bikes.

I have seen some posts recently of other tuners and people getting a hold of this file and selling it or putting it into bikes thinking HP4 > base bike without understanding the full architecture of the ECU. Even though they are both BMSK8’s, much of the information does not transfer over, while some does.

While some of the tables work well, and are upgraded from the base bike, such as knock control OFF (I will revisit this below) and fueling air mass specific to the HP4 exhaust with link pipe, many of them are HP4 specific and are non-transferable. This does not work on ANY other exhaust system and most of the shorty system bikes have a lean miss at part throttle and are too rich at full throttle.

However most importantly when put onto a non-HP4 bike, consequences can result in a mild stumble or power cut, to a moderate throttle shut down, and flat out stalling of the bike at high speed. This could result in a host of issues, including lean angle, hard throttle cut out, and loss of power globally on multiple cylinders. While this map creates awesome engine breaking, it makes rain and sport mode result in an instant limp mode because the map location and load logic are completely different on the HP4 as demonstrated below for Rain/Sport.

 

 

nonlimpmode_zpsa8a4ycdg

Your email is never published nor shared. Required fields are marked *

*
*

I'm not spambot *

SATISFIED CLIENTS MAKE US HAPPY

  • “ 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
Competition use only parts are clearly labeled as competition use only in the product listing page and may only be used according to the guidelines posted on our Emissions Notice to Customers in California page