Performance Upgrades - Nissan-Navara.net
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post #1 of 22 (permalink) Old 29-05-19, 07:53 AM Thread Starter
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Performance Upgrades

Hi all, has anyone done any performance upgrades to their D40 2.5 dci?
I use it for work mainly, motorway and some town driving. Just after something to improve driveability.
I have heard the hot side pipe is a good mod but just wondered if anyone had done it and noticed a difference?
Also, any other mods worth doing.
Thanks all
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post #2 of 22 (permalink) Old 29-05-19, 08:42 AM
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If you have a search for posts from a user Bluenavara, he got into the high 200's bhp.
Your best bet is a remap which will release at least 40bhp, little bits like a hard pipe will make a very small difference.
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post #3 of 22 (permalink) Old 29-05-19, 06:55 PM Thread Starter
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Thank you mate. Ill deffinately check that out.
Its not so much the power as more like throttle response, and power delivery. Just make it more driveable.
I know shes a big heavey truck but just feels sluggish on pick up. It just feels restricted id say is the best word to describe it?
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post #4 of 22 (permalink) Old 29-05-19, 07:33 PM
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It is very hard to change the "true" throttle response of a fairly large diesel (a lot of rotational inertia; partly as it has to smooth out only having 4cyls), plus the turbo takes a little time to pressurize (no matter how much you up the boost, it's still a "laggy" device).

A remap will give more torque, and will give therefore give an impression of better throttle response, but it is more that it just gives you more "push".

Many older guys will recall that it took years to get throttle response on petrol cars, which had started to use fuel-injection as standard, up to the levels of say, a set of Weber carburetors... FI does have other benefits though! Similarly, when turbos started to become a standard fit, throttle response was dire, and only recently some of the better cars are starting to feel like they are getting there...

What you might try, given the truck has an electronic throttle, is one of those devices that re-profiles the signal that is sent to the ECU from the actual pedal. Sure, all it does is fool the ECU into thinking you are faster to press the throttle further down, but it sounds to me like that could work.

LM^4 (elephant's memory man) may recall the item I am talking about...

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post #5 of 22 (permalink) Old 29-05-19, 08:04 PM
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I have the tdi tuning box which is good with 7 modes which are gimmicky but there is a difference.

I have just imported the idrive throttle box that freeman Steve mentions below. Iíll fit it tomorrow if I get time and let you know what itís like..... the throttle response is the thing that ruins the drive for me, so Iím hoping to eradicate it with the idrive.

2017 auto Tekna Cayman Blue.. many mods to come!
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post #6 of 22 (permalink) Old 29-05-19, 08:46 PM
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It should help, if it is throttle response then a hard pipe will help a bit. At least you haven't got a V6, any brisk acceleration from standstill on the wet roads today just turns into wheelspin...
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post #7 of 22 (permalink) Old 30-05-19, 10:16 AM Thread Starter
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Cheers guys. This is a very helpful forum and you all seem to know what your talking about. One of the best ive used for sure.
Id love to know how you get on with the idrive unit. How much was it if you dont mind me asking?
Thanks again guys, keep it coming
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post #8 of 22 (permalink) Old 30-05-19, 06:52 PM
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Performance

I have just blanked the egr. Makes a decent difference on pulling away and fuel economy is improved. Next is a remap as I shall shortly be offering the service and what to do mine before and after on their dyno to prove the figures!
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post #9 of 22 (permalink) Old 30-05-19, 07:21 PM
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If anybody wants to read through this 52 pages, it is how to get 280 bhp.

https://www.nissan-navara.net/143-pe...-underway.html
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post #10 of 22 (permalink) Old 30-05-19, 08:08 PM Thread Starter
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@Jimbob39 where did you get the blanking plate from mate. I bought one a bit back and it didnt fit even tho I double checked it was for my truck.
Also, what sort of milage are you guys running when re-mapping?
Mines on 93000 and just worried it will put too much stress on the engine/other components and cause issues.
Its my daily for work so need it to be reliable aswell
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