- dump valve confusion?!?
- Hose clips
- Gearbox Oil Change
- dv26/dv26-d???????
- Pros and Cons of Lightweight flywheel
- Turbo going?
- Z20LET guide
- unluckiest Z20LEt Owner ever ?
- whats the loudest dump valve
- ancillaries etc ill need with a z20let?
- OEM Dump valve vacuum pipe
- C20LET into MK3
- Dump Valve Problem
- Fitting DV now got PROBS!!
- car wont start help :(
- Turbo heat shield
- Interesting about the Z20LEH
- See through container on the right hand side of engine bay
- emissions light???
- Hesitation
- A common misconception - Oil Viscosity
- Bought myself one of these today....
- Part Info needed
- Oil
- My Turbo's leaking!!
- The kangaroo dance
- AFM unplugged
- Greddy Turbo timer
- do i need a gasket???
- oil in all the wrong places
- z20let plugs
- Fitting M Tch Gear shift shortener - help needed
- boost gauge problem help please
- Cost of a Z20LET engine
- need help with a few small problems
- Full Performance Exhaust
- 3rd gear problem?
- Turbo Lag Help
- Pillar Pods For Coupe Mk 4
- oil for zlet??
- Loosing oil and oil smell?
- Is This Normal !!!!!!!!!!!!!!!!!!!!!
- Have AMD stopped tuning Vauxhalls?
- Astra SRI Turbo help
- sri 2002 turbo
- boost figures and behavior
- need help again guys
- 30k service
- Consumption Figure
- Powerpipe
- Fuel
- Oil comin from DV !!!???
- Power Figures
- Engine Rebuild
- Boost pressure switch?
- superchip
- mot fail due to immisions but i cant figure out the fault
- dump valve
- sri turbo oil
- Help - Need your assistance please!
- Poorly z20let
- Engine Swaps (1.6 8v to a 2.2 16v)
- Turbo seals????????
- Removing Plenum Chamber...
- Vacuum Schematic for Z20LET engine
- Brake Fluid
- Dump Valves
- Small Exhaust Housing?
- engine swapped to z20let speedo not working - non abs
- How do you reset ECU?
- Gearbox oil
- quick question - tech advice....
- Greddy Turbo Timer Wiring
- How can i keep my engine running cooler?
- need advice
- Emissions warning light
- Hollowed out precat pipe
- Induction Kit
- When using 2.2 airbox on a coupe turbo??
- standard re-circ valve spacer?????
- turbo ideas
- Z20let fault codes.
- manual and electronic boost controller
- engne managment light
- Turbo Glowing Red Hot!!!???
- The Voodoo dolls must be out
- over heated battery?!?!?
- peformance ptfe gaskets anyone drop your inlet temp
- tickover problem
- Changing Water Hoses
- Emission Light after changing filter/duct
- Z20LET ABS / TC problem
- Very Strange Noise When Cold - Help Needed
- need dump valve advice please guys
- very urgent help needed
- Dumpvalve.
- mk4 astra gsi turbo - dodgy boost
- 2.0 turbo pipes
- Got the 888 back fixed!
- C20let Astra
- Has anyone cracked 300 bhp
- Pace ront mount i/c
- quiet dump valve
- Z20LET Question..
- where does the cats lambda plug into
- dump valve
- any help
- Phase 1 Top Speeds
- Anybody had a Pre-cat fiitted on a Coupe T?
- help
- Slight Turbo Oil leak???
- SRI T booming/humming noise
- Engine Squeeling at idle
- 5 - 30 oil?
- Astra SRI Turbo - engine rattling/knocking??
- Mk4 gsi engine problem
- precat decat pipe
- Just got back from Courtenays - Problem Solved
- C20 LET Boost Levels
- Regal NEW lightweight flywheels?
- How easy to replace the turbo
- anyone have a pic of the head without rockercover on it plz?
- Torque setting for Sump bolts?
- why wont my cams fit back in?
- Is it safe? Polishing Boost Pipe & Throttle Housing?
- Fitting the Courtenay FMIC to coupe
- courtenays clutchs, are they any good?
- More Power
- AFM? Something worse?advice please!!!
- Bailey versus Collins dump valves
- Noisy suspension after fitting Koni Kit
- CS3 or PH2
- phase 3 via mail order
- Engine Ticking?
- Z20let Throtle Responce With Oe Dump Valve Deacivated
- help on parts please
- astra gsi dump valve
- If I????
- sri turbo part problem
- Phase 2 boost levels
- Changing turbo (Whats needed?)
- Z20LET Engine Oil
- Removed Pre-Cat
- Needing a quick answer here!!!!
- uprated actuator
- DIY Pre-Cat De-Cat
- Pic Needed Of Oe Dump Valve
- Help with standard dump valve
- boost levels checked
- What size bolt on oil feed?
- Just got back from Courtenays yesturday and oil is everywhere!!
- just bought an oversized intercooler and had a bad thought
- Running problems
- Oil leak on my car, im stumped!
- Coil pack problems????????
- Oil Change
- 2.2 Airbox Mod With Silicone Hoses
- How do you set up a new actuator?
- Actuator movement (Drection)
- HELP!!!P0170 error
- bulkhead access
- my car really sups the fuel
- lambda sensor
- Engine running lean through rev range
- CV joint probs
- Z20LET spark plugs.
- some questions about Z20LET tuning...
- Z20let operating temperature
- Metal Filings !!!
- Samco pipes wasting away...
- Just fitted FMIC and its rubbing
- SRi Turbo to GSi ECU re-map?
- Z20 LET temperature question
- std clutch
- Problems with my turbo...
- superchipped z20let?
- DV26-D not that loud?
- v-max 260
- Been working on my coupe tonight and made regal and courtenay join forces.
- VX220 Air Box
- Quick Question
- Few Things
- air intake/pressure sensor
- Best Induction for Astra Coupe Turbo
- Jobs for the weekend
- Astra G heater blower removal?
- astra sri turbo heater probs
- Any Difference Between The Pre-Cat's?
- fitting an oil pressure gauge
- Turbo Whistle?
- Just a Quick Brake Question..........
- Dump Valve For Astra coup Turbo
- HELP - GSi wont start !!
- Big probs with Z20 let
- Astra Coupe Turbo Exhaust
- Engine smoke at higher revs?
- Urgent, Turbo Question........
- problem with my z20let
- Who stocks the F23 powerflex engine mount?
- Buying an ECU & Looms?
- Whats the normal oil tremp for a Z20 LET?
- blown turbo
- looking after my Z20LET
- VMAX Map
- Z20LET - Noisy Tappets
- dump valve whistle
- Coolant level warning!
- Is this normal? Engine temp running at 50 degrees
- display problem
- Running nitrous
- Traction/EPS Problem???
- Turbo Lag Question
- "universal" Intercoolers???
- When Should You Replace Your Iridium Plugs???
- What should i do with my gearbox?
- Gearshift
- z20let hesitation
- Aircon fan blowing through an IC?
- Airbox Derestriction
- Are they the same ? blow off - bypass
- engine cut out?
- o2 sensor were and how/much?
- VXR Turbocharger
- Help!!
- coupe turbo owners
- Blue smoke
- Problems
- Blue smoke(reall really scared)
- Z20LET Injectors
- Dump Valve 'T' piece?
- Phase 2 boost levels
- My car is giving up.....
- Astra Mk4 Gsi
- Cars dead
- DV spacer
- Will this be ok on the 2.0 Turbo?
- Intercooler Woes
- Lack of woosh from DV?
- Oil filler cap
- Z20LET Oil Breather Box
- Problem with my mk gsi turbo
- my powerpipe smells fuel...
- Boost pipe diagram
- Which plug is for TC?
- IHI manifold & F28 gearbox
- Any ideas on why my ride is underpower
- have you ever heard a failure like that??
- Z20LET Transplant
- Spark Plug Gap for Stage3?
- z20let problems!!! help!!