I did, i try to make the best of it when i travel to the dyno. I actually have another video already shot but it may be a few days before i edit it. I've got a few other things i absolutely need to do before getting back to editing.
As you shared, it is likely an ignition timing effect…nothing to do with the energy delivered to the plug. It would be interesting to see the timing advance curve as well to see how the ECU is adjusting it.
Yeah, this is entirely a spark timing difference. the weaker coils firing 100us quicker would give the same kind of power loss. To be fair, the ECU is really good at fine tuning the timing over time and would probably adjust back up to the same power but that makes dyno testing for differences rather tricky. The stock coils have plenty of power for the stock setup.
Just my theory, but the 2GR-FKS needs these more powerful ignition coils because its compression ratio is a lot higher than the 2GR-FE, which also means higher cylinder pressures, therefore harder for the spark to jump across the gap, thus needing the more powerful ignition coils so the spark plugs will always be able to fire reliably.
The previous coils would likely have been good enough but Toyota does tend to overbuild some of the specs on these motors and the spark energy seems to be one of the things they overdo. This just ends up helping all of us that want to modify these motors later and that's great! Unfortunately this gives a bit of a perception of poor aftermarket support since there's a lot less support needed to make these motors great.
I will be using these on my 2AR builds because they are stronger and somewhat more reliable coils. But i will be adjusting the timing curve to make up for the quicker firing. That said, i don't think it will add any benefit other than cutting 1/3rd of a pound from the engine.
@@89gts Best i can tell they are compatible but there was some variation between different part numbers for the firing delay of up to 100uS so if this is a perforance application i would make sure all coils are the same part number. 100uS can be up to 4 degrees of ignition timing near the redline.
It's only knocking because it has way too much timing advance. This motor only knocks around 4200RPM with pump gas at max power. If i put E85 in, it would likely stop knocking but it would still be making less power than it did until i took the extra timing out.
It's a 50/50 paint. It only looks good from 50' away or at 50mph. If you go to your local body shop they'll have a massive book of paint colors you can look through if you're looking to do a respray.
Yes, would allow more ignition advance and potentially more power, but either coil would likely provide the same power once actual ignition advance was the same,
