Erm... try:
Start with init patch
Enable osc 3, crank detune round to -100 or so, level up to half way, wave = saw
Crank up sub-osc - 2/3rds, should be on pulse
Add a bit of noise, colour to max
Need a fast LFO to modulate the pitch of osc 1 pitch and another fast lfo to modulate osc 2 pitch by a little bit each - dont use same lfo for each, first one set rate very hight, the next one set rate quite a bit lower so they are unrelated.
Switch on unison, set to 2-3 or so, detune to max, spread quite low, maybe min.
May want to decouple the filters (so filter 2 is at a fixed frequency and independent of filter 1 and key follow), add a bit of reso to filter 2, crank the cutoff until it just start to fiz at the top end - JP80xx - like.
For adding presence, high end bite - fiddle with EQ to get the right freuencey balance - pull down the mid a little - crank it up around 8-10K or so - the high EQ slope will gently bring up presence bands too as well as boosting high-end fizz. For more bite and punch - try cranking up the ring mod a bit.
On its own - it may sound a little thin low end - it will be fine in a mix with bass sounds, drum parts etc - to much low end and you will swamp everything else.
Now frig around with filter 1 type = LP12/LP14 in filter filters and mess with key follow, env follow, reso, cutoff etc to suite.
I have a TI and assuming the TI init patch - no idea if the B one is equivelent. Its basically filters wide open, osc 1 and 2 or saws, detune = 32 and osc balance = mid point, filter balance = mid point.
Not quite dirty enough - add a little noise FM.
That should sound quite fat and fizzy if you get the EQ right. Run it through some delay and reverb and you should be sorted
Caveat - I have a TI, buit from memory of B feature set - this should work...