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Frequently Asked Questions - Turbo Engines
 
TP208 kit on a C20LET engine
Wiring for turbo boost control valve
Bosch Yellow Injectors for Calibra Turbo
Standard XE injectors with a turbo charged engine
 
TP208 kit on a C20LET engine
Question: I have a Vauxhall Astra MK2 turbo, can I install a TP208 kit on my C20LET engine?

Answer: The TP208 kit could be used on an LET engine with our MBE9A4 ECU & an off the self LM9A4-FWD wiring harness with additional Boost sensor and Amal Valve with add in adaptor harness. It would then need to have rolling road time or dyno for mapping. The TP208 kit or throttle bodies included in the kit are only really worth fitting to the turbo engine once the engine has already been highly tuned. You would also require to have made a custom air box in order to contain the pressure before it is passed into the throttle bodies themselves

Links: 2.0L Taper throttle body kits | MBE9A4 ECU

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Wiring for turbo boost control valve
Question: I'm using an MBE9A4 ECU with a turbocharged Duratec engine and i have a question about the turbo boost control valve wiring. The valve has two wires, 12v and ground, I'm going to connect the 12v directly to the battery, but do i connect the ground directly to the ECU pin 33 or do i have to use a relay in between? Meaning, does the ECU handle the current requirement of the valve?

Answer: The 12v supply must be ignition switched and you connect the negative side of your valve directly to Pin 33, the pin can draw up to 1amp. You must not use an external device such as a relay, it is too slow.

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Bosch Yellow Injectors for Calibra Turbo
Question: Can I use Bosch yellow injectors for a Calibra Turbo?

Answer: We never use the Bosch yellow injectors as used in the turbo engine. The reason for this is that any engines we have programmed use a larger injector as the standard injector appears to run out of flow fairly early on in tuning. We have heard of some companies using the Yellow on high output engines, but the tests we have made, show they are pushing the injector too close to its limit, which in our opinion means sometimes it would work ok, and other times it would supply fuel incorrectly, which is likely to cause damage

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Standard XE injectors with a turbo charged engine
Question: We busy changing the 20 XE to accept a turbo charger & would like to know whether the standard injector setup supply enough fuel with boost @ 0.5 bar, if they cannot must we go for a extra injector(s) in the boost pipe or four bigger 400cc injectors. We would like to know your ideas.

Answer: The standard XE injectors should just about cope with 0.5 bar of boost. Normally when we have programmed people’s turbo charged engines, we replace them with a higher flow injector. But since you are not looking for a lot of boost, the standard injector will just about cope but with no more. We would probably use a Magnetti Marelli injector, which is a 14ohm injector, which will cope with the kind of fueling you require. are a direct replacement with the original injector positions.

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Please check our customer cars section which may help answer your questions
 
2.0L Vauxhall Components | 1.4L & 1.6L Vauxhall Components | Duratec Components | Hayabusa Components

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