Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Delicious Flash & GO Tunes for ALL FORCED INDUCTION Applications

DeliciousTuning · 11-08-2019, 04:40 PM

New version release is official. Version 28.50 offers these updates.

Version 28.50 Updates
- changes to help mitigate LSPI (low speed pre-ignition)
- drivability improvement over 27.5x and 28.xx
- more top end power on the Edelbrock supercharger
- more accurate AFR readings
- better closed loop fuel control under WOT

Want to know more about LSPI - Keep reading

Short education post on what we have been spending a LOT of time on (within our tunes) this year in order to remove LSPI issues. You may ask what is LSPI.

Low Speed Pre-Ignition (LSPI): this trait is inherent on high compression, forced induction, direct injected engines, such as the BRZ (with forced induction) and 2015+ WRX, that can cause the combustion to pre-ignite at low RPM's and high loads.

Here is a good article on what the issues are and what we are trying address in tune, along with other physical changes.

https://www.motor.com/magazine-summa...-pre-ignition/

We have found a few key items the tune to mitigate this issue while trying to offering safety, drivability and power for daily commuters.

Some other things to watch are the oil that you are using in your engine. Cars that are prone to LSPI, please make sure you are using an oil that is SN PLUS rated.

11-08-2019, 04:40 PM	#736
DeliciousTuning PhoneFlash by EcuTeK Join Date: Dec 2012 Drives: Edelbrock Equipped - Subaru BRZ Location: San Diego, CA Posts: 1,611 Thanks: 309 Thanked 1,683 Times in 581 Posts Mentioned: 403 Post(s) Tagged: 1 Thread(s)	New version release is official. Version 28.50 offers these updates. Version 28.50 Updates - changes to help mitigate LSPI (low speed pre-ignition) - drivability improvement over 27.5x and 28.xx - more top end power on the Edelbrock supercharger - more accurate AFR readings - better closed loop fuel control under WOT Want to know more about LSPI - Keep reading Short education post on what we have been spending a LOT of time on (within our tunes) this year in order to remove LSPI issues. You may ask what is LSPI. Low Speed Pre-Ignition (LSPI): this trait is inherent on high compression, forced induction, direct injected engines, such as the BRZ (with forced induction) and 2015+ WRX, that can cause the combustion to pre-ignite at low RPM's and high loads. Here is a good article on what the issues are and what we are trying address in tune, along with other physical changes. https://www.motor.com/magazine-summa...-pre-ignition/ We have found a few key items the tune to mitigate this issue while trying to offering safety, drivability and power for daily commuters. Some other things to watch are the oil that you are using in your engine. Cars that are prone to LSPI, please make sure you are using an oil that is SN PLUS rated.