Siemens Deka 630cc Injectors

Set of four 630cc performance fuel injectors

Direct physical fit into the Vauxhall Z20 engine, and good for a little over 400hp

You will need your ECU tuning to run these if changing from a different sized injector

Siemens Deka 875cc Injectors

Set of four 875cc performance fuel injectors

Direct physical fit into the Vauxhall Z20 engine, and good for upto around 500hp

You will need your ECU tuning to run these if changing from a different sized injector

These surge tanks are designed as a complete and neat solution for cars that want something that looks a bit more refined than the usual fabricated aluminium surge tanks. Being machined  entirely from billet aluminium these fuel tanks are the most robust available on the market.

Mountable where ever you like, preferably stood upright but with a bit of flexibility in that the pickup is to one side, so you can mount it horizontally if you really want to.

-6 fittings on the top for feed and return from the main fuel tank,

Pump mounts inside of it and there is a robust military spec screw on electrical connector on the top for feeding large pumps.

Overall a very neat solution to reduce the chances of fuel starvation under hard use, a potential engine saver when running a bit of extra boost.

We have run these FST systems in many vehicles now and they are a very good solution to adding extra fueling capacity to your system, typically with a single ASNU pump fitted inside these will provide enough fuel for a bit over 550hp, using a set of our 1000CC injectors and also our inline fuel filter kit. 

ASNU 330 LPH Direct fit in tank fuel pump

This pump is a direct replacement for the OE pump fitted to your Astra. Enough fuel for over 450hp, with no messing, will do over 500hp with lines and filter swapped for better flowing versions. No cutting of the basket is required, just drops straight in and plugs in to the standard wiring. Comes complete with a jubilee clip to secure it to the standard in tank fuel line.

Astra G in tank fuel filter 

This fuel filter sits on the bottom of the fuel pump and we recommend you change it at the time of swapping pumps 

If your thinking of installing an upgraded fuel pump to your astra G then this is probably the kit for you ! 

When changing fuel pumps it is recommended that the fuel filters are also swapped out - in this kit you get both filters that are found on the Astra G and also a fuel pump that is a direct fit to the car - no trimming required at all 

This adaptor is fully designed and tested by ourselves here at RND and used on all of our high power builds that utilise an An-6 fuel system.

These came about when we needed to further upgrade the fuel system to have a bigger feed line to the front of the car. The main issue was that the feed lines could be installed, but when using an available aluminium adaptor the hole through the middle of this adaptor was considerably smaller than the hole through the stock fuel rail fitting, meaning that you had a choke point smaller than with the standard lines!

This was mostly down to the material, having quite a small thread to screw this fitting in to the rail means that when using aluminium the hole through the middle can not be too big, other wise the fitting would be very weak and potentiall snap off, which is never a good thing with fuel!

This is where we designed one to be made from marine grade stainless steel so we could enlarge the hole without having any safety issues.

Specs;

Thread size – M12 x 1.25 to AN-6 Male (inlet thread of OE Astra VxR Fuel Rail)

Fully CNC machined from marine grade stainless steel

This fitting is safe to use with even the most corrosive fuels

High flow 7.5MM through hole – VS 4MM typically found in an ally fitting

We also stock the Return side fitting, this is just in aluminium due to a much lower flow requirement (the regulator has a smaller discharge hole in it than this fittings bore)

They can be found here

400HP is always a good target in a power sense , having a fuel system that has some extra capacity in it fuelling wise will also do no harm. Beyond the 315 HP area the VXR Astra standard injectors are really running too high. We have some a little better at the higher end but some certainly start to get unpredictable beyond this power. Bigger injectors are really the best option , increasing the fuel pressure too much with standard plastic fuel lines is not such a great idea.

The ASNU direct fit pump has proved to far out perform all the other pumps we have used . Running one totally flat we have had near 600 hp one a single unit , more when running a pair.

The Deka injectors are a very well made injector , the variance across a very large number of these is very small and they always map well too. We have used hundreds of these injectors without a single failure and they will make 400HP comfortably.

Paired up , these two components pretty much sort your build for 400HP barring filters , if your seeking more power then they will both stretch to a little bit more than the 400. If wanting a lot more than the 400 then its probably time to think about some 1000CCs

This setup can be fitted and mapped to a standard car or a stage 3 car without issue , in preparation for having the right hardware for more power. We can fit these on the day prior to ECU calibration sessions.

These parts do not necessarily mean you will make more power , if something else is holding you back then these will not mask the issue.