In mine and some other's experience, if you remove the DPF before the remap, after about 10-15mins of driving the car will attempt a regen, if I remember correctly, you'll get 'pollution filter blocked' or something like that. So you'll spend most of your 100 miles with 1 pretty much constant regen attempt. This means you'll be chucking serious amounts of smoke out of the back, You can stop every now and then, but 5 mins later, the smoke will be back.
I wonder how you forced the regen? Do you have MES software yourself? If so (in my experience and I've no idea whether this makes any lasting damage, so it's your risk) you can keep your computer with you on the drive, but before setting off, you can tell MES you have replaced the anti pollution filter which sets it's clogging value to 0. I drove 250 miles like this and didn't have to reset during that time, so no smoking.
If you don't have MES and you remove or de-core your DPF without the map, it'll be the longest 100 miles of your life:big laugh:
As a matter of interest, where are you in the world and are you removing the whole DPF or having it drilled? I'm of the opinion that for MOT purposes, you're best having it drilled, so it still looks like there's a dpf present.
I take it the garage who do the remap won't drill your dpf?
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.