blue monster

All,

I am looking at increasing the power in my Nissan X-Trail 2.2 dCi - currently 136bhp & 233 lbs/ft of torque (factory standard).

I have spoke with a few diesel tuners who's first response has been ECU re-map until I telll them I have an X-Trail and then they have all pointed me in the direction of these guys:
http://www.tunit.com
http://www.dieseltuning.co.uk
http://racechip.de/

All of them are claiming power increases in the region of 175BHP and 292FTLB Torque for a few hundred quid.

So, the questions are, has any one tried any of these products on any turbo diesel car?
If so, are they any good?
Are there any reliability issues and are they likely to enhance issues such as turbo failure or reduce the life of the turbo?

Cheers
Martin

jml

What do you reckon ?

s2konroids

My mate tunes turbo deisels, i dont TBH i dont have much knowledge on them, I'm mainly deal with petrol cars.

However he says they do chip-into the relibility, well if you push them and also some companies quote the highiest figures they've recorded some take an averages for the increases.

For example he had a fabia VRS in, it was 130BHP standard afterwards he reckon'd it could be safely remapped to 165BHP he could get about ~185BHP but it would erode some of the reliablity. Being basically golf engine (VW reliability) as well.

Once the customer found out he wanted 185BHP (even though my mate clearly explained to him and warned him), a year later a bust turbo and ****ed clutch - food for thought.

unclefester

Had my previous car remapped from 150bhp up to 190bhp. Torque went up to 310lb/ft.

Turbo - needed replacing at 60k miles ( i bought the car with 22k)
Clutch - dual mass flywheel fell apart within 8k miles of the map.
Brakes - eventually went to porsche 4 pots and bigger discs

It's worth a punt, Tunit etc are better than simple ebay resistor mods. Drive it carefully and you'll see better mpg. Drive it hard and on the new power everywhere and it will cost you more.

All of the engine components are tuned for optimum service length mixed with power, you cannot increase power without decreasing service length. The only question / gamble is how much you can increase for how long without breaking something.

S2IM

Worth looking at a company called Celtic Tuning as well. My boss at work has had (4 months ago) his BMW 635d remapped by them. All I can say is it goes link stink of a shovel. 320bhp and over 400/ft torque. The S2000 had no chance keeping up one one evening. I have spoken to them about mapping our Astra H Diesel and they seem very professional. 100/177 to 140/238 after. For £300. Money back guarantee if you dont like it as well and they come to your place of work/home.

My old STI was remapped (ECUTEK) and components will wear quicker than out of the factory as I was told by the mapper (JGM). But, the car will also respond better and be a nicer drive as every car out of the factory has a default map on to cover component differences, and give a good balance between performance and economy.

The STI was so nicer in slow traffic and the oomf it gave all the way up to 7200rpm was amazing.

That sort of increase on a X-Trail will be noticeable for sure, but budget in clutch and brakes not lasting as long.

Difference is, are you looking at a plug in chip or a full remap?

I'd suggest looking at the full remap as the map is tailored for your car and its current component state instead of a chip that just ups the boost and fuelling.

mikey k

I looked at this a while ago.
Came to the same conclusion.
Forget the generic boxes.
Get it properly remapped with the correct supporting mods if you are going to do it.

blue monster

I don't know - that's why I asked the question

Every one else, thanks for your comments/advice