Since the Tengu has over 1000 possible subsystem combinations and almost all of them are terrible, I've posted my field-tested C5 Tengu fit for all to use.

Quote from: EFT
[Tengu, WH]
Damage Control II
Ballistic Control System II
Ballistic Control System II
Ballistic Control System II

Large Shield Extender II
Photon Scattering Field II
Photon Scattering Field II
Invulnerability Field II
Invulnerability Field II
[empty med slot]

Heavy Missile Launcher II, Scourge Fury Heavy Missile
Heavy Missile Launcher II, Scourge Fury Heavy Missile
Heavy Missile Launcher II, Scourge Fury Heavy Missile
Heavy Missile Launcher II, Scourge Fury Heavy Missile
Heavy Missile Launcher II, Scourge Fury Heavy Missile
Heavy Missile Launcher II, Scourge Fury Heavy Missile

[empty rig slot]
[empty rig slot]
[empty rig slot]

Tengu Defensive - Supplemental Screening
Tengu Electronics - Dissolution Sequencer
Tengu Engineering - Augmented Capacitor Reservoir
Tengu Offensive - Accelerated Ejection Bay
Tengu Propulsion - Fuel Catalyst

*Wildcards: Some possibilities are listed below in order of preference.

Target Painter (Recommended to have at least two in fleet, preferably 3-4)
Explosive Hardener (If fleet has enough target painters)
Warp Disruptor (You can pretty much kill fleets of similar numbers)
Small Capacitor Booster (Only when there's 2 Basilisks. Still not the best option)

^Rigs: In order to use missile rigs, you must use the CPU Efficiency Gate or fit faction mods.
Medium Warhead Calefaction Catalyst II <-- Gives +50 DPS, not required.
Medium Warhead Flare Catalyst I x2
----OR----
Medium Core Defence Field Extender I x3
----OR----
Any missile/damage/tank related rigs. Just don't be retarded.

If you're using your ratting Tengu hull for the WH op, you should already have the missile rigs installed.

To import this into EFT, simply highlight everything in the quote box, ctrl-c, and switch focus to EFT. It should automatically import the fit.