- Buick Ownership
Anyone done any engine mods or piggybacks yet on the 2.0 turbo?
I have a HPTuners scan of a 2017 Regal GS AWD down the 1/4 mile and it does look like AFR is a little rich here and there.
From the scans I converted Equivalence Ratio command to AFR ratio.
ECM uses EQ ratio for fueling,... ( Same thing as Lambda, but opposite lol. ie... 1 = 14.68..., 0.9 = 13.2, ie 14.68 x 0.9 = 13.2,... 0.8 = 11.74 and so on. )
First gear - 2,750 to 6,000 rpm = 14.0 to 12.5 afr
Second gear - 4,400 to 6,375 rpm = 12.1 to 12.0 afr
Third gear - 4,400 to 6,350 rpm = 12.1 to 11.3 afr
Fourth gear - 4,900 to 5,450 rpm = 11.3 to 10.8 afr
Going by the AFR command in the scan is as follows....
1st = 13.0 to 10.95
2nd = 11.45 to 10.95
3rd = 11.45 to 10.70
4th = 10.7 to 10.30
The Actual AFR is unknown because this car does not have a Wideband 02. So I would have to install one to verify the true AFR.
My 2018 Sportback has Factory Widebad 02 sensors, so It shows me exactly what it's commanding and exactly what the real AFR is in the exhaust. And it's nice to see in the scans the Actual AFR in my 2018 Regal is identical to the AFR commanded. With very tiny discrepancies here and there.
Exactly; that was one of the many things that drew me to this car.It looks like the Regal TourX and Sportback use the GM Ecotec LTG engine, also used, with various tunes, in the ATS, Malibu, CTS, CT6, Envision, Equinox, the low-end Camaro.
There must be plenty of people experienced with this engine, if not the particular hull in which it sits.
Would anyone have an idea as to what are the differences between ignition coils? I have been looking around looking for an aftermarket set of ignition coils for my 2017 Buick Regal 2.0L Turbo. I have asked Jegs, Accel etc where I could get a set. Not for performance just to dress up the engine compartment. No one has been able to give me direction.
Still asking if anyone can tell me how to remove the supply tube from the top of the throttle body??
Who are the Buick aftermarket suppliers??