[baabootoo]

Are there any easy ways to see what the engine timing is during driving? Maybe a Bluetooth thing that goes on the ALDL port? Last night on Engine Masters they compared 87 and 91 E10, 110 leaded, 116 leaded, and E-85. They dyno tested them on a 525 HP LS 6.2 and wanted to do myth busting, like they always do. Oddly enough, ALL the fuels made the most power at only 29 degrees of timing (especially 87 v 91), and ALL wanted the same mixture. E-85 needed a richer mixture, but still only 29 degrees and only showed a slight bump in HP. Thanks.

 

[saagz87]

Yes you can log base spark and actual in deg with any tuning interface or a cheap OBD adapter The PID will be called different things depending on the software.

Not sure why you want to watch it. It will move all over the place based on the tables your operating in. All engines are different and I can tell you your Hellcat will have a lot less timing than a LS at peak power

I haven’t seen this engine masters, but octane has long been known to not gain any power. It’s the resistance to detonation we care about

 

[PHX396]

Yes you can log base spark and actual in deg with any tuning interface or a cheap OBD adapter The PID will be called different things depending on the software.

Not sure why you want to watch it. It will move all over the place based on the tables your operating in. All engines are different and I can tell you your Hellcat will have a lot less timing than a LS at peak power

I haven’t seen this engine masters, but octane has long been known to not gain any power. It’s the resistance to detonation we care about

This right here is why you use higher octane … residence to detonation, especially on boosted engines. Also running any leaded fuel is going to kill your O2 sensors in time.

 

[baabootoo]

Their point was that every engine is different and may want/need more timing for maximum power. I want to do it for one reason, to see if there are adverse affects, like pulling timing, if I run 87 or 89 while burning up interstate miles. The mileage is the same too with 89 all the time. I can also see if I can use 91 for maximum power as opposed to using 93 which is more common. With the summer over, and winter tires on, I won't be using WOT much!