Xantia HDi Performance Upgrade

[6speedmanual]

Back in a Xantia after a few years away.
This time it's a HDi 110 (last was 2.1td)

Condidering options for a petformance upgrade.
I know remaps are available hoiking it up to about 135 but interested in the bigger technical solutions.

So what is the collective knowledge on:
2.0:
Can a bigger turbo be fitted which keeps manifold and exhaust installation standard? (rebuild by Turbo Technics for example)

2.2
Anyone dropped this lump straight in?
Can it be run on the ECU for the 2.0? (maybe remapped)
Can the 2.2 ECU 'talk' to the Xantia electrical system?

Hybrid:
Can the 2.2 and 2.0 heads be swapped? (considering a 2.2 bottom end with 8v head)

Any experiences welcome. Will save me buying loads of units from scrap to experiment with!

Cheers
Peter

[citroenxm]

Were NOT big on messing around with upgrades and killing other models to fit engines in what they are not supposed to be in..

Besides, I wouldnt DREAM of fitting an awfull 2.2 HDi into a Xantia... Its bad enough in the C5.. then theres lots of electronicals the 2.2 has that the xantia dont, FAP, Eolys etc..most of all with injectors when the combustion seal breaks and the injectors stick in the inlet its toast for the engine..

You have the BEST ever hdi engine already in your car, that is the 2.o 8v engine.. Fitting a bigger turbo may cause issues again because the engine ECU has a set boost figure programed into it and if the turbo overboosts the engine ecu throws a wobbly..

The easyest and BEST effective way is simply a remap, OR a tuning box! I had one i n mine untill I started getting a cutting out problem, and it was perfectly good enough for me!

[CitroJim]

Paul, agree with every word there

The only concern I have with a tuning box is that they often work by increasing the fuel rail pressure which in an HDi is already incredibly high. I'm worried they may cause undue strain on the fuel injection equipment and I have seen one instance of a fractured pipe between the pump and fuel rail that may have been attributed to the use of a tuning box upping the rail pressure to an extent a weak spot was found.

Some users of tuning boxes have found they upset the ECU and cause the Engine Management warning light to come on.

I've enjoyed a 110HDi in the past and found it most agreeable in standard tune. Plenty enough urge...

[citroenxm]

No Jim.. not all of them do mess with rail pressure.. my two boxs don't because they plug in between the injector plugs and injectors so i think it adjusts the nozzle opening times.. they never have put my engine light on.. ive only removed it while i look into the cutting out problem which i now believe is the engine pump...

[CitroJim]

my two boxs don't because they plug in between the injector plugs and injectors so i think it adjusts the nozzle opening times..

Yes, and that's the far better way of doing it I believe... It leaves the rail pressure set at what it should be and the ECU then knows no different...

[Peter.N.]

I fitted a tuning box to my 2.2 in an attempt to improve the fuel consumption - it didn't, it did improve the performance though but I'm not into that so I have removed it, it can also cause insurance issues. I have a 2.0l now which is much better on fuel.

Peter

[Eddie Nuff]

First question I ask is why??

I have a 2.0HDi 110 and from a standing start the performance in the first two gears is average at best (or maybe that's because I don't hammer it) but once in third the torque is superb and pulls like a train - better than other marques I've driven with 130 and 150bhp. Once in 4th and 5th the power is there when I need it but still achieves over 50mpg - not bad for a car with 190k on the clock.

Enjoy the engine you have - there ain't much better!

[Hell Razor5543]

Hello Peter,

I think you can guess that people in the know on this forum reckon you have the best HDi engine going, and to stick to that old engineer adage; "If it ain't broke don't fix it", although not so long back somebody wrote "Nah, keep fixing it until it breaks!", but I think (hope!) that this was just friendly banter and p1ss taking.

I think Citroen and Peuguot got it right, and blended the right mix of power, torque, and delivery to produce a good one.

James

[Peter.N.]

Hi James

They certainly seem to be among the most reliable engines, I have been putting off getting involved with Hdi but now there are no more XMs I have had to bite the bullet, I have been very pleasantly surprised with the 8 valve 2.0 litre, they seem to be every bit as reliable as the XUD engines, perhaps even more so where head gaskets are concerned.

The 1.6 in the Fords doesn't seem to be so good though, they eat turbo's, is it the same engine as the Citroen?

Peter

[citroenxm]

The 1.6 in the Fords doesn't seem to be so good though, they eat turbo's, is it the same engine as the Citroen?

Peter

the 1.6 is the Ford/PSA Joint engine Peter Yes fitted to Frauds Fucus, and Citroen C4's etc etc, and they are VERY Oil fussy just like Renaults Laguna DCi's engine! Fully Synthetic is OPTIMALLY important otherwise a premature turbo failure is imminent..

The 8v WAS AND IS and ALWAYS will be the best engine... Manifolds are confined to the rear of the head so any injector issues the head and injectors can come off cOMPLETE! No need to remove inlet manifold to get at head bolts, and if the injectors are stuck in place... Your snookered!

[Sam KS]

I was (am) thinking about up grading to a 110HDI if (when) we move back to the UK and was planing on a tuning box and exhaust if that would give more power. i feel with cars (and bikes) to much power in never enough.

but it looks like the peeps on here feel i should just leave them alone. and the laguna issues explains why there are so many on evil bay being offered as "spares or repair" for almost nothing. and the only other froggy car on the short list i cant afford the model i like (only like the look of the new C5).

[citroenxm]

The laggys are their own fault... Renault specified oil services TOO FAR apart from each other that the turbo seals couldn't cope with due to the degrade of oil in an engine.. I am leading to beleve if you change the oil ever 7 to 10k in them then there wont be an issue and use ONLY Fully Synthetic oil. This mistake has been made in them too, where semi has been used!

Im toying with a Laguna 2 as we too hate the C5 1... so If I can get one thats fine, Ill increase my oil services, as I do everything myself and see what happens. A point up on Peugeot, which I dont understand, they use the same makes of blowers, but in the Xantia 8v models they can go ages with an oil change and still be fine!

Not sure why that should be..

[Sam KS]

i never go over 7500km/6 month oil/filter changes on my cars. it's a lot cheaper than a motor. but i have worked for a oil company for the past 5 years or so and have now moved to filtration.

[citroenxm]

Ah there you are then Sam... they should survive for you!

[c.morewood]

In my younger days I used to ride a BMW K100RT I bought it new in 1985 and it did about 45 mpg. When I retired it to the garage, its still there, 330,000 miles later it did about 58 mpg with a steady 65mph on the motorway giving me 60 mpg.
This was achieved by
1. replacing the stock exhaust with a balanced one where all the pipes leaving the cylinder head were the same length.
2. a gearbox upgrade basically a taller 5th gear
3. replacing the rear bevel drive with one from an RS, less wheel rotations for each shaft rotation.
4. a K&N filter.

My point is would it not be possible to get a balanced exhaust made for the Xantia? Would it be possible to fit a 6 speed gearbox from the C5 onto the Xantia? and try an aftermarket filter. I've had my K&N since 1999 and its saved me a fortune in filters as well as giving a small performance boost.

Chris