Tuning FX Impact MKI to MKII or X?

Yes they can all be upgraded although the MK1 and early Impact-X units would need more than it is worth, money wise, to upgrade to the AMP regulator, found on the later Impact-X and MKll guns, as one would need to replace the whole trigger block as well as many parts with it. Something I did not do when upgrading my Early Impact-X. The cost to upgrade my early X gun to be mostly equal to a MKll goes something like this; ;^)

Impact-X $2,100

Aztec scope $440

FX Rings $60

580 cc bottle $350

Huma regulator $120

Regulator rod $30 Factory reg rod was bad when new

.177 barrel kit $400

.30 barrel kit $320

.25 700mm liner $110

Ergo Grip $40

STO Moderator $130

K&L Trigger guard $130

K&L safety $40

UTG Bipod $135

Mono pod $60

Valve body $35

Power Kit $40

ARCA rail $40

Wika Gauges $115

Extra mags $270

CF Barrel shroud $45

Spare parts $150

Impact & parts $5,160

Not really this mostly the addiction talking here.

You can actually get by without most of these mods. 

The mods that make a big difference are the STX barrel and liner, the AMP reg, the power plenum and a bigger transfer port in your barrel and in the valve. But lets not forget that pesky little C3 bumper as well.
 
Yes they can all be upgraded although the MK1 and early Impact-X units would need more than it is worth, money wise, to upgrade to the AMP regulator, found on the later Impact-X and MKll guns, as one would need to replace the whole trigger block as well as many parts with it. Something I did not do when upgrading my Early Impact-X. The cost to upgrade my early X gun to be mostly equal to a MKll goes something like this; ;^)

Impact-X $2,100

Aztec scope $440

FX Rings $60

580 cc bottle $350

Huma regulator $120

Regulator rod $30 Factory reg rod was bad when new

.177 barrel kit $400

.30 barrel kit $320

.25 700mm liner $110

Ergo Grip $40

STO Moderator $130

K&L Trigger guard $130

K&L safety $40

UTG Bipod $135

Mono pod $60

Valve body $35

Power Kit $40

ARCA rail $40

Wika Gauges $115

Extra mags $270

CF Barrel shroud $45

Spare parts $150

Impact & parts $5,160

Not really this mostly the addiction talking here.

You can actually get by without most of these mods. 

The mods that make a big difference are the STX barrel and liner, the AMP reg, the power plenum and a bigger transfer port in your barrel and in the valve. But lets not forget that pesky little C3 bumper as well.

HOLEYCOW!!! That's a brand new Daystate Delta Wolf and Impact MK2 with PP both SHIPPED!!!
 
Yup, had Ken put PP KIT on my gen1/2. POWER is not the word. Shooting 25.3 @ 967. I don't worry about bulls after sight in. Shooting yesterday, 137 yds, shooting center out of pellet tin. 34g. @ 887 same result. That's good enough for varminting. Of course 100 and in are virtually touching or hole in hole.

Going to finesse 150 today.