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Guide; Stage 1,2,3 Basic Explinations - Dum-Dum - 05-12-2011
Stage 1,2,3? What does it all mean?
In most tuning circles you will often hear talk of tuning stages and see tuning companies offering a â??stage 6 upgrade for £ra*e.99â?. A lot of this is often just marketing rubbish and can be largely irrelevant. One companyâ??s stage 3 can be equivalent to anotherâ??s stage 5.
In terms of 306 Diesel tuning we talk about 3 stages and they have a commonly accepted, but often unwritten meaning.
These are just the basic meanings as in a future guide we will go in depth on exactly what each mod does and why you need it.
HDi
Stage 1 is usually just a generic remap but is often associated with exhaust and air filter mods too. This will see 115-130bhp.
Stage 2 is a FMIC (front mounted intercooler), the turbo wound up a little and a stronger remap. This will usually see 150-160bhp. This power level is too much for a standard clutch (even a brand new one) and so you will need an upgrade as described in other guides.
Stage 3 is a combination of a bigger fuel pump (usually from a BMW 330d or similar), a bigger turbo, modified injectors and an 1800bar fuel pressure sensor. These mods will need custom re-mapping to get the most out of them or in some cases even for the car to run atall. These modifications could potentially see massive horse power but the limit of the engine internals is said to be around 230bhp and in reality there is very few cars running over 200bhp.
XUD
Stage 1 is usually just turning up the fuel pump but is often associated with exhaust and air filter mods too. This will see 100-130bhp.
Stage 2 is a FMIC (front mounted intercooler) and more tweaking of the boost and fuelling. It can also involve internal modifications to the fuel pump such as a gov mod and grinding the LDA pin. This will see 120-150bhp.
Stage 3 is a bigger fuel pump (usually off a larger car or van) and a bigger turbo. This can see over 200bhp but 200bhp is reckoned to be approaching the limit of what the standard engine internals can take.
Obviously there are some non conformists amongst us whos cars clearly donâ??t fit into one of the categories like 1.9TDs running big turbos and fuel pumps without a FMIC and HDi owners who have fitted a FMIC without so much as a hint of a remap.
Re: Guide; Stage 1,2,3 Basic Explinations - Mr Whippy - 12-06-2012
Great limit basic guide
The limit of the engine internals on the HDi is probably 230bhp but in practice many people may not have new internals in there either.
The kinetic energy of the rotating parts is also more costly than the torque loading on those rotating parts as the revs rise, so in practice 300bhp at 3000rpm may be possible, while 200bhp at 4500rpm might be catastrophic!
The same is probably true of the Td engine too. It likes revs more than the HDi but that is also where the KE goes through the roof (remember KE ~ v.squared, so double the rpm and you quadruple the load on the bearings!)
Dave
Re: Guide; Stage 1,2,3 Basic Explinations - 4WayDiablo - 12-06-2012
Xud stage 1 also includes turning the turbo and sometimes to some extent changing to the larger of the standard turbos, usually T2
Re: Guide; Stage 1,2,3 Basic Explinations - Ben Jay - 12-06-2012
stage 4 xud
Twin turbo + super charged....
Re: Guide; Stage 1,2,3 Basic Explinations - Dave - 12-06-2012
Good write up Chris, very informative for me on the hdi side as I know fa about them and wouldn't know where to start...
RE: Guide; Stage 1,2,3 Basic Explinations - TheCrimson - 20-06-2012
This should have links to guides on each stage :-p
RE: Guide; Stage 1,2,3 Basic Explinations - kingy - 26-07-2012
great guide.
anyone got any idea of prices for a stage1/2 on a hdi.
sorry for sounding like a newbe but im only just starting to learn.
cheers.
RE: Guide; Stage 1,2,3 Basic Explinations - spike2002 - 26-07-2012
Very good little write up. Im a petrol head so learnt abit about derv tuning with this
Repd