Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Help needed please, High negative short term fuel trims

Kris86 · 09-12-2020, 10:56 AM

here is a log with a WOT and a cruise with a small WOT, stopped midway through WOT because it started miss firing.

what would be causing my RPMS to be fluctuating like that?

https://datazap.me/u/kris86/wot?log=0&data=31

https://datazap.me/u/kris86/cruise-wot?log=0&data=31

this one is me at a stand still free revving

https://datazap.me/u/kris86/free-revving?log=0&data=31

The issue seems to be very intermittent, does not happen all the time. While going WOT the car started to miss fire in the higher rpms in one of the logs so I back off early through the pull

09-12-2020, 10:56 AM	#3
Kris86 Senior Member Join Date: Feb 2013 Drives: RHD Gt86 Location: Antigua, west indies Posts: 369 Thanks: 619 Thanked 102 Times in 75 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	here is a log with a WOT and a cruise with a small WOT, stopped midway through WOT because it started miss firing. what would be causing my RPMS to be fluctuating like that? https://datazap.me/u/kris86/wot?log=0&data=31 https://datazap.me/u/kris86/cruise-wot?log=0&data=31 this one is me at a stand still free revving https://datazap.me/u/kris86/free-revving?log=0&data=31 The issue seems to be very intermittent, does not happen all the time. While going WOT the car started to miss fire in the higher rpms in one of the logs so I back off early through the pull __________________ Toyota - Making Dreams A Reality 461hp on 91octane - JDL turbo GTX3076r GEN 2 - Mazworx CD009 transmission Last edited by Kris86; 09-12-2020 at 11:41 AM.