D16A7 belongs to ED4 Sedan without catalytic converter. It only was built between 1988 and 1989 and sold in Belgium and in the Netherlands (and eventually France??? I don't know...)
It's nearly the same engine like in ED7 Hacthback or ED4 Sedan. The only difference is the not sheeted cat.
With cat: D16A6
W/O cat: D16A7
D16A6 = 109 hp
D16A7 = 116 hp
D16A8 I don't know the specs

Some 4th-gen specs for germany:
[Civic]'88 - '89
EC8
D13B1 1.3 SOHC single carb engine - w/o catalytic convertor!
75Bhp
Hatchback
yellow bumperblinkers
'89 - '91
EC8
D13B2 1.3 SOHC single carb engine - with cat.
75 Bhp
Hatchback
white bumperblinkers
'88 - '89
EC9
D14A1 1.4 SOHC double carb engine - w/o cat.
90 Bhp
Hatchback
yellow bumperblinkers
'88 - '89
ED2
D14A1 1.4 SOHC double carb engine - w/o cat.
90 Bhp
Sedan
yellow bumperblinkers
'89 - '91
ED3
D15B2 1.5 SOHC double point fuel inject. engine with cat.
90 Bhp
Sedan
white bumperblinkers
'88 - '89
ED4
D16A6 1.6 SOHC PGM-FI with cat and servo-steering
109 Bhp
Sedan
yellow bumperblinkers
'89 - '91
ED4
D16Z2 1.6 SOHC PGM-FI with cat and servo-steering
110 Bhp
Sedan
white bumperblinkers
'89 - '91
ED6
D15B2 1.5 SOHC double point fuel inject. engine with cat.
90 Bhp
Sedan
white bumperblinkers
'88 - '89
ED7
D16A6 1.6 SOHC PGM-FI with cat
109 Bhp
Sedan
yellow bumperblinkers
'89 - '91
ED7
D16Z2 1.6 SOHC PGM-FI with cat
110 Bhp
Sedan
white bumperblinkers
In Austria and Switzerland there was a Sedan with AWD to buy, too.
'88 - '91
EE5
D16Z2 1.6 SOHC PGM-FI with cat and
All
Wheel
Drive
110 Bhp
Sedan