Do any UK users have experience of remapping the 2.7D Jaguar engine for fuel economy? Be very grateful for imformation re. good places, if add-ons are any good etc. Cheers,
Leedsman.

 

I did look into it a while back but there weren`t many firms doing 2.7d remaps, I know the Durham agent for Superchip (remapped my Golf 140 TDI) didnt at the time.
BuckMR2 has delved into 2.7d upgrades recently.

 

Hey Leedsman, sorry I can't speak for the Jag engine itself but have had several remaps done on various vehicles.

Saab 93 1.9 Tid 150bhp - 175bhp and a Ford Mondeo ST Tdci 155bhp - 195bhp both spring to mind.

The Saab was remapped by Saab's tuning division and was at 80k when I sold her....great extra performance AND fuel economy with NO issues.
The Ford Mondy was done by Seditas in Ayr as recommended by the dealer I bought the car rom...also stonking performace figures as well as increased fuel economy when driven normally.

I know this doesn't help with regard to the Jag engine, but I don't see why it would be any different.

Get yourself a good, recognised and reommended tuner and you should be good to go. For probably around the £300 - £400 mark I'd guess for a reputable company to do!

With around 206bhp and 435nm of torque you could work on around 257bhp when finished approx. This based on 25% of the original bhp and what most recognised tuners say can be done safely and without any issues generally. There will be some that say you can have 30% - 35% more but you're starting to ask for trouble IMO then.

Why not do a search on google etc for recognised tuners in your area? Maybe even ask a few local Jag dealers if they can recommend one to you?

Good luck

 

Thanks for the comments: The one remapper I tried so far, R.S. Tuning in Armley Road said that he wouldn't guarantee better fuel economy, and that he had not done a Jag. before. I got his place from the 'net. I am only really interested in fuel economy, but I suppose more power would be nice, especially at sale time! We did talk at some length about removing the DPF, but as mine seems to work all right, I'll leave it alone -- one case where "if it ain't broke don't fix it" is a proper approach. I shall have to keep looking.
Leedsman.
Oh, p.s. Are the add-on boxes that plug into the diagnostic socket worthwhile? Maybe they don't remap, just interfere with the fuel injection? Cheers.

 

Paramount performance do this for economy, the nice by product is extra ponies.

http://www.paramount-performance.com...g/economy.html

 

Thanks Sean B., have had a look at Paramount, lots of good advice, but a little distant for me at/near Slough. Will bear it in mind though. Cheers,
Leedsman.

 

Hey Leedsman, I can only speak for an ECU remap as that is the only experience I've had......3 now I think it is over the last 5 years or so and 3 different cars.
I've heard a lot about tuning boxes myself and have absolutely NO negative comments to post on the subject I do not know too much about.

I do know that a lot of our comrades on the uk forum have used them and have bought more than a few off a Jag owner I believe who frequents the site. The guy is called roverron and seems to get a helluva reputation......see the link below
http://tuning-diesels.com/

He is / was a massive fan of the Rover 75 and then into Jags a few years ago. I believe he does a lot for the Ford community too and the Mondys...( same engine ! )

Anyhow thought you might be interested and good luck

 

Many thanks JimC4, I've bookmarked that site and will peruse fully later today.
Leedsman.

 

No problem Leedsman, hope it helps!

 

Ron was one of the ones I contacted a while back and didn`t have anything for the Jaguar 2.7d but things may have changed since I enquired.

 

i dont know how much you can change on the emission systems on Jaguar diesel.

buy here in states, we do remove the DPFdiesel particulate filter, and get around 10-15% increase in fuel milage,
catilytic convertor worth 5% more,

EGR delete worth 6-8%.

car sounds terrific, and turbo response is much better.

then the ECU retuned, remapped.

makes for a much happier driver.

now you have to ask youself, can i get away with it, or am i woos, if you know someone in MOT,that would help.

 

Hmm...nice thought ron but unlikely to get away with that over here

 

Hmm...nice thought ron but unlikely to get away with that over here

 

Does anyone here know speaking fundamentally, if the injection timing is altered during cold-running? Such design is outside my area of competence, but I reckon SOMEONE on this site knows....
Leedsman.

 

myself not familier with the Jag fuel mapping, but with todays tech ,i would say that YES inj. timing is advanced for inital cold start, then immediatly retarded so as to keep noise down and smoke reduction.

but altering the cold point of injection , wont help overall milage much if at all.

NOW wouldnt it be nice to have an adjustable knob in cabin to change timing, while you are crusin down the road.

just to monitor fuel consumption as you drive. have two settings one for MOT and one for yourself.

speaking of MOT,, what is involved with such stuff, we dont have much here in TX. diesels are exempt from emission tests, just regular HDlight tail li. horn etc.

HEY, i like that idea!

 

see whats involved here...
mot_link

 

Ronbros, if it were down to me, I'd have a whole row of adjustable knobs in my motor...
Leedsman.

 

TRUE, but if you have to many places for adjustment, you could get in trouble.

if you had 6 knobs for adjust. you would find just one the most important.

 

Leedsman
Had a tuning box on mine and ditched it (engine light when too enthusiastic plus easily seen when bonnet lifted) for a remap from Big Fish Tuning work done at Stokesley
The tuning box give some BHP increase but torque went down from std
The remap gave extra BHP but torque went from 321 lbft to over 381 lbft
They can now do the upgrade via the diagnostics and there is a rolling road nearby in Northallerton.The update is invisible.
Great village at Stokesley,very picturesque, market square,small river (more of a stream) with ducks and bridges over to pubs/cafes while the work is carried out
They do either economy mapping or an all out performance only remap.
Mine was only £199 but think prices have gone up
Its only an hour and 15 mins from Leeds and the drive back will definately be different to the drive there if you go for the performance option

 

Thanks for that detail BuckMr2, interesting stuff. I think you meant the torque figs. the other way round! It seems the average add-on 'box' simply raises the common-rail fuel pressure to increase fuel delivery overall naturally producing more power (so long as boost pressure is raised accordingly).
I'd be partic. interested in your possible economy map and if it works -- sceptical old me...
I'll post a report on my economy investigations so far, I have a number going on at once, but I can say the #1 effective has been the engine sump heater which is consistently reducing cold-running fuel consumption, and quite obviously so.
I think people are going to come back to this one as the price of petrol and diesel continues to rise -- some mechanic friends of mine reckon UK prices will have reached £2 per litre by the year end. Onwards and upwards.
Leedsman.