- 1.9 air box and AFM
- Let rocker price
- OIL PRESS questions
- intercooler query
- BMC induction
- Which spark plugs?
- fitting a f28 in a z20let
- Dodgy AFM Characteristics
- HKS SQV Blow off valve or similar??
- what is this on my engine?
- Dump Valve & Wastegate or Just Dump Valve?
- whats the crack with flowtec
- c20let dizzy
- calibra clutch for Z20let?
- Courtenay ZLet Uprated fuel pump mod
- Exhaust Blowing, but from the front
- Coupe Turbo Driveshaft boots?
- quick question
- zlet oil pump part number and how easy/hard to do
- Undoing actuator?
- vxr part number
- Standard Dumpvalve/Re-Circ Valve Question on Z20 LET.....
- painting an intercooler
- oil pressure question
- Problems: Is this my cat pipe and radiator nailed?
- Pics of actuators - think I have a problem
- who makes the bling?
- This any good?
- Astra SRi Needs New Turbo
- What a result - actuator problems!!
- Astra Coupe Turbo Boost Pipe
- Zlet rocker cover??
- New to Coupe Turbo, Few Tuning Questions?
- ABS & TC light - A new thought?
- How much oil does your ZLET use?
- Who's had Courtenay CS4, now that VXR injectors are available?
- Couple of issues
- Astras Coupe Turbo inlet airbox advice needed
- Z20LET sri turbo
- injecters
- dump valve question
- which is the best mod
- P0170 Fuel Trim Malfunction
- boost on idle
- Decat on a z20let
- de-catting a astra coupe turbo
- dump valve again.....
- Astra VXR Injector Rail with Injectors
- water spray
- Blue smoke on idle (I am confused)
- zlet from a vx220 into a astra g , whats needed from the vx220
- water pump
- i have 2 turbo whats the best for remap
- Recirc boost pipe
- Urgent help needed!
- Fuel Filter Help ?????????????
- Coolant Level, Confused
- boost solenoid/wastegate....
- actuater
- ecu reset?
- Doh! Engine cut out!!
- manifold bolts
- Maybe a silly question...
- Z20LET sandwich plate help!
- Gasket Replacement
- intercooler question
- ticking
- boost control
- Dead Turbo???
- help
- launch controler
- Whirring noise when switching off
- Front engine mount question
- Serious upgrade parts needed..and questions...
- Z20LET Ticking from rear right.
- how to remove....
- what is the best turbo to go for
- faulty coilpack
- Z20 LET Dump Valve fitting?
- I Want More Noise
- Cat-Back System - VXR
- Advice on a few things..
- gaskits in exhaust
- Running in a Turbo
- hesitation with new spark plugs
- new injectors
- engine conversion
- astra turbo question
- how 2 fit a vxr turbo
- spark plug gap for Z20LET
- direct port nitrous and zlet
- what does -31 actuator mean
- Advice needed! Dump valve for an Astra Coupe Turbo
- What could be causing?
- Knocking
- Coolant Temp Sensor, how hard to change one on a Z20 LET?
- limiter
- Standard map on a 888
- Any good for Coupe Turbo??
- Astra GSi Turbo Help...
- Standard dump Valve question Darth Vader sounding?
- will my car run at all??
- Turbo Seals Z20let!!!!!!!!!!!
- Stage 1 Or 2?
- cat question
- please help
- IC for Z20LET (big enough?)
- turbo pic
- 3rd Pops out now and again on coupeT, help???
- Z20 LET Gearbox Problem, Help Needed!
- fitted vxt turbo the day (some problems)
- Astra Mk4 GSI with no rev limiter??
- Rolling road
- ZLET: 5w30 or 10w40? (Fully synth)
- BCS rubber pipes
- F23 on ACT being difficult
- zlet ECU
- Boost Prob Any 1 Help
- turboing my 1.8 16v m4 astra
- What Engine Oil Best Suits My Astra GSI Turbo mk4
- -31 Actuator fitment ??
- Zlet whistle and power
- Astra Gsi mk4 dump valve
- Dump valve problem...
- what do u think of this
- would a x20xev throttle fit zlet
- what do you think this is ?
- P3 Boost
- Air Recirculating on a turbo?
- Forge DV for Z20LET
- smic
- problem
- Where can i get a salvage turbo?
- does zlet have VVT?...
- vxr turbo with actuater
- Whats a good compression test reading on a ZLET?
- a lil confused??
- Serious Kangarooing, running out of ideas?
- anyone got NOS on there Turbo???
- Will the VXR afm work on the Z20let?
- Standard Precat downpipe on Coupe turbo question
- What's this whirring noise?
- revs drop
- 1.9 airbox
- Big problem....need help....Turbo knackered?
- Uprated Clutch
- Oxygen sensor - ZLET
- Down on Power
- cheapest vxr turbo
- Remap Advice
- Universal Intercoolers (FMIC)
- Remapped today at Thorney motor sport
- Diblas Z20let flowmaster kit - Any good?
- Done A Little Mod This Weekend . .
- Miltek 200 cell sports cat
- Front boost solenoid, anyone know exactly where it is?
- Standard Dump Valve Location!!
- Help me choose an induction kit for coupe turbo??
- Turbocharging - how it works and tech terms/useful turbo part no's & other tech info.
- wooo vxr turbo ordered
- FMIC question
- Wastegate chatter!!
- 2.2 airbox for my Z20LET
- turbo timer question? blitz fatt dc model
- Problem!? (Fault code inc)
- Cold air feed
- smooth boost pipes r rarer than gold dust
- Scorpion exhaust backbox!
- Guys with high mileage Z20 LETS.
- Oil pressure and viscocity question
- zlet head options
- vxr fitting in south wales
- gearbox and clutch upgrade
- Ensuring a smooth running z20let
- More power for my OPC
- Z20LEH Turbo
- What is the std boost on the Z'let?
- Air Flow Metre Flow Rate?
- Leh ....
- Fluctuating boost at 4000rmp?
- Fluctuating boost at 4000rmp?
- what do i need
- Fluxuating boost - I am confused
- a few questions..(vxr afm/Quaife atb/clutch)
- forged pistons standard rods
- what pads for my GSI ?
- is porting and polishing worth it on the zlet head?
- Resetting car/spanner light on Astra VXR
- What power ???
- 0w-40 FS oil? - Would you use it?
- Had my GSi at Vauxhall the day.
- ZLET Cooler?
- Remus
- Hose Size
- Fitting Pace FMIC
- paddle clutches
- revised type boost control solenoid
- turbo how 2
- Rocker cover breather & 2.2 airbox
- Anyone with pics of a zlet with an oil catch tank?
- precat and sports cat group buy?????
- whats wrong here? (pic inside)
- What is this??
- Air Filter
- blanking plug size????
- Pressure Clips
- Water Wetter
- torque settings?
- power loss from flywheels to wheels
- Removing oil
- Should / Can a precat be welded?
- Bearing play in z20let turbo
- Any Idea What This is?...
- Worth getting or gimic?
- CDTI Airbox mod
- Blue Flame or Miltek Exhaust HELP Please!!
- typical
- cam belt and water pump
- you got to love the rollers eh ?
- question regarding cooling temp
- LET and LEH Airboxes
- front mounted intercooler
- "Engine" Light!?
- What kind of power could i be hoping for?
- crank balancing..
- stage 3 head + race cams
- Super Duper, Quick Question???
- vxr fitted,but no precat(wot a ****ing day)
- what kind of power gain should i expect from
- VXR Turbo Boost Levels
- Tuned induction length
- dump valve
- Boost gauge
- would these fmic be any good
- Petrol light?
- gsi/sri-t whats the diff in bhp
- Spark Plug Tool
- tuning for low down torque
- Manifold
- Wher can i look for a full exhaust system for my Astra Gsi Turbo
- samco hose
- How to Fit A Dump Valve
- dump valve fitting prob
- The average PSI, to the max PSI
- Fitting VXR fuel rail & injectors
- 4mm Blue Tubing
- engine management light question?
- Fitting new clutch and Quaife Atb diff...
- My New Filter Is On
- Astra Gsi mk4 exhaust!! please help