[Zah247]

Hi
I'd be grateful for some advice. I ran a DTUK tuning kit on my Euro 3 2005 Nissan pathfinder automatic with some great results. My motorway mpg went from 32mpg to 42mpg at a cruising speed of 80mph. I now have bought a Euro 4 nissan pathfinder auto aventura. Guys at DTUK said it's a straight swap and no software flash required. So I ran the new nissan without the kit and got 32mpg on motorway. I've now ran map 2 + 1 and map 4 -2 but both only giving me 26.5mpg on motorways. Sadly a massive drop from my 2005 pathfinder. Is there any1 who know which the best map is for increasing fuel economy on a euro 4 pathfinder. Guys at DTUK say sadly the euro 4 is not as fuel friendly as the euro 3 but surely the kit should improve on the 32mpg I got without running the kit. Any advice tips welcome. Please don't respond if you only going to say trial and error. Thanks in advance

 

[lookskyward1]

Any advice tips welcome. Please don't respond if you only going to say trial and error.

:roll:

 

[Guest]

I found mine was best all around on the delivered setting, tbh.. Most folk buy it for raw power rather than mpg.
The euro 4 is pants on fuel, if it's mpg you want you could always buy an air balloon lol.

 

[Zah247]

Thnx Biggi..... lol i may consider making my own bio diesel. what setting did your kit come as standard?

 

[Guest]

Bio diesel will cost you a fortune in the long run. Your motor is not designed to run on it.
All the folk that run diy fuels, cheap supermarket **** & such have injector/scv problems along with wimp mode.
Just keep it serviced regularly, run quality fuels, keep tyre pressures correct and don't carry **** round.

I'll try find you a pic of the standard delivered setting
Edit... Pic

 

[Zah247]

Point taken, thnx Biggi and the pic looks like Map 1 and 0%. I'll try this setting and see how it runs. Kind of crazy to learn my 2005 pahfinder was better than my 2007 aventura by 25% on mpg figures... and there was me thinking Nissan would have advanced the fuel power ratio

 

[Guest]

Point taken, thnx Biggi and the pic looks like Map 1 and 0%. I'll try this setting and see how it runs. Kind of crazy to learn my 2005 pahfinder was better than my 2007 aventura by 25% on mpg figures... and there was me thinking Nissan would have advanced the fuel power ratio

They increased the power to compensate the slaughtering of the engine with a bigger catalytic converter.
The Mpg drop is quite significant

 

[Zah247]

I definitely notice the 2007 is more pokier and moves more effortlessly than my previous 55 plate pathfinder. I guess I'll have to spend less on the Mrs and more to fill up. You mentioned crappie supermarket fuel, what's the issue? Is it not shell or BP that supply them?

 

[diggerman]

All fuel is manufactured to a price, if the supermarket fuel is sold cheaper generally the stuff is *****.
A local taxi firm's mechanic told a mate of mine that all the taxi drivers that used A...a fuel had trouble with their injection system, the only 2 that used the BP pumps across the road never had any issues.

 

[Zah247]

Shell it is then.... I'll just stick to buying groceries from Tesco. Thnx Diggerman

 

[Lil'Trucker!]

Hi
I'd be grateful for some advice. I ran a DTUK tuning kit on my Euro 3 2005 Nissan pathfinder automatic with some great results. My motorway mpg went from 32mpg to 42mpg at a cruising speed of 80mph. I now have bought a Euro 4 nissan pathfinder auto aventura. Guys at DTUK said it's a straight swap and no software flash required. So I ran the new nissan without the kit and got 32mpg on motorway. I've now ran map 2 + 1 and map 4 -2 but both only giving me 26.5mpg on motorways. Sadly a massive drop from my 2005 pathfinder. Is there any1 who know which the best map is for increasing fuel economy on a euro 4 pathfinder. Guys at DTUK say sadly the euro 4 is not as fuel friendly as the euro 3 but surely the kit should improve on the 32mpg I got without running the kit. Any advice tips welcome. Please don't respond if you only going to say trial and error. Thanks in advance

Every vehicle will be slightly different so there will always be some trial and error which isn't really too much of an issue, as there aren't exactly thousands of combinations to go through.

If you're looking for just economy then i'd suggest the base setting (Map 1 +/- 0%) then adjust to the lowest -% and that should in theory give the best economy.

Also blanking the EGR and removing of the viscous fan and replacing it with a Kenlowe or similar should all help fuel economy, it did with my truck.

If fuel economy is top of your priorities, i think you may have chosen the wrong vehicle?

 

[Zah247]

Thnx for your advice. I'm not expecting it to give me prius figures. It's just I was getting 42mpg on the motorway with my previous euro 3 pathfinder and now to only get 26.5 mpg in my newer 57 plate was a shock!!! I'll blank the EGR can u explain the viscous fan.. what is it and where to get the replacement. .Is it easy diy job? Cheers

 

[Lil'Trucker!]

Thnx for your advice. I'm not expecting it to give me prius figures. It's just I was getting 42mpg on the motorway with my previous euro 3 pathfinder and now to only get 26.5 mpg in my newer 57 plate was a shock!!! I'll blank the EGR can u explain the viscous fan.. what is it and where to get the replacement. .Is it easy diy job? Cheers

If you're only getting 26.5 mpg on the motorway, depending on the speed, revs etc, that is very poor, and may indicate other issues?

My Euro 4 Auto Nav from new used to do about 21.5 mpg around town and high 20's on the motorway, depending on speed.

I now get approx 25 mpg around town, and low 30's on the motorway depending on speed.

The viscous fan, is the radiator cooling fan, it has a viscous coupling that cuts in at a certain temp operating the fan and cooling the rad.
They are efficient but, there is some drag with these, and removing and replacing with an electric fan will give slightly better performance and fuel economy.

It involves removing four nuts to remove the fan assembly, and also the plastic shroud needs to be removed if fitting an electric replacement fan.

It's not too difficult if you're ok around an engine.

Some remove the fan and leave it off without issues, as there is also an AC fan in place that cools the AC and helps the viscous fan in extreme conditions.
I couldn't leave my fan off completely as i tow a large heavy fifth wheel trailer, so i fitted and electric Kenlowe fan.

It has been fine but, i'm having problems with relays packing up, so need to investigate.

The EGR mod is easy to do also :thumbright:

 

[Guest]

As above & keep serviced regularly..
These motors hate dirty filters.
When you change the air filter do a maf sensor clean (do a search for how to)
An ecu reset may help you, also on search bar.

On the fuel topic, the best you can run in order are..
Shell, BP, Texaco, Esso.
These are rated through test (engine/fuel) benches. I used to visit feather diesels in Halifax, they do rig testing for engine manufacturers/fuel companies and oil companies.
Supermarket fuel is cheap for a reason, it has little or no additives. The additives will give you a cleaner burn, better economy and more upper cylinder lubrication.

Regardless of Nissans poorly advised servicing, I do mine every 6000miles.

 

[joe2006]

Regardless of Nissans poorly advised servicing, I do mine every 6000miles.

Yet in Australia the service intervals are 10,000ks/6000miles under "normal" operating conditions with additional requirements for "severe" conditions. Don't really understand how there can be a difference between markets :dunno

A lot of guys service every 5,000ks/3000miles!

 

[Zah247]

Guys you have all been extremely helpful. I'm going to tweak the DTUK settings to find the best mpg power balance I can achieve. I may not get the 42.5mpg as I did with my euro 3 on motorways at a cruising speed of 80mph, but if I can get mid late 30's that should be something. I'll blank the EGR and service every 6000.