Nah, you really can't. Beleive me I've tried. You can get a relatively unsophisticated widening effect with a standard delay if you set one side to 100% wet and anywhere from like 3-20 ms of digital delay, which might honestly work fine if that's the only way you'll ever hear the track, but that technique immediately fails and collapses the guitar into notchy phase cancellation if the tracks are bounced down and panned with each other, or if the track is played in mono.
A Mimiq pedal does a whole lot more subtle things to make it actually sound almost just like two human players. If you use it right (at the beginning of the chain and then into two separate rigs), it won't phase cancel itself if the tracks are bounced together or panned with each other, just like two real tracks won't.
@Beyond Black If you set the Tightness dial as high as possible, it stays as tight as any double-tracked-by-humans guitar line.
One thing I'd like to point out is that in this video, Ola is using a Mimiq Mini, which has only one mono output. IMO the Mini version is almost worthless and really nothing like the standard pedal. In the Mini format, it's basically just a strange kind of chorus effect. The real point of the Mimiq is to split the raw guitar into two signals, then send those signals to different amps so each can generate distortion separately. The Mini version doesn't let you split the signal at all so you'll either be running an effectively chorused guitar signal into one amp, or an effectively chrosed sounding preamp into a poweramp, which I guess can be cool, but it doesn't emulate double tracking like the real Mimiq pedal does.
