Engine chip

[Kishada]

Just a quick heads up that there is one on offer at the moment.
It works on both Bosch and Zexel injection pumps but you need to specify which you have to the seller to receive the correct instructions.
It goes under the name of 'Speedbox' and is sold here on ebay, and here on the sellers own website (it's the bottom one of the 4 at about £80)

- Ordered through ebay on Monday night, arrived today (Wednesday) via DHL from Italy
- On offer at E75 on ebay, which equates to £62 through Paypal
- Gave a tangible improvement in torque on the way home from work (13 mile trip) on the supplied setting
- Made the recommended changes to the adjustment screw when I got home with the engine warmed up. At 1.5 to 2 turns of the screw the idle started to increase indicating overfuelling so I've left it at 1 turn clockwise over supplied setting.
On the way home the engine was juddering slightly when coming back to idle when coming to a stop so i'll give the ECU some mileage to learn before I mess with the adjustments again.
- Other than that very happy with the huge improvement for the price!

Will report more over the next day or two

 

[stinka]

Very interesting cheers mate. What year is yours ? And is it Bosch ?

Wonder if they do one for an 02 tdi ? Seems a bargain

 

[Kishada]

Very interesting cheers mate. What year is yours ? And is it Bosch ?

Wonder if they do one for an 02 tdi ? Seems a bargain

Mine is an X-reg 2.7Tdi with Intercooler running a Bosch Injection pump.
Having read the ad in English on both the sellers website and the UK version of his ebay store (click here), I realised that it's the same product in the ad in Italian that I bought

I think you're an ex-mechanic?
I'm in the trade myself and i'm more than aware that all this is doing is holding the injectors open for longer thus giving it a bit more fuel.
For all the 'haters' that don't believe in such a sledge hammer approach, lets be honest, this isn't a modern common rail high tech diesel engine with umpteen sensors giving feedback to the ECU, it's erm, agricultural and very basic which is why I like it a lot more than the stuff I have to work on on a daily basis!
I would recommend a remap rather than this for the modern diesel engines without question!

 

[makeitfit]

Just a shame a remap is not a viable option on the old oil burner
I found it actually cost considerably more for no more gain than the power chip option :thumbs

 

[Kishada]

Just a shame a remap is not a viable option on the old oil burner
I found it actually cost considerably more for no more gain than the power chip option :thumbs

Superchips wanted £400
There was a fairly local guy with a good reputation that would probably have been £250-£300 that I might have considered but he's out of action due to an accident.
There are other local places that would probably remap for £200-£250 but I do worry about the number of 'remap specialists' cropping up left right and centre.
I'm more comfortable with this because I know exactly what's going on and have full control over it!
I'm fine re-mapping petrol turbo motors. I've done it twice with turbo upgrades on my other car using an Apexi SAFC Neo and Innovate wideband for lambda readings, and I know I should probably fit an EGT to make sure this isn't going to end in tears, but the price for the chip was too appealing and a new engine is still cheaper than a superchips remap :lol

 

[makeitfit]

Dont worry about EGT you'll never get it off the needle :lol
At best the chip will have got you about 25 extra horses . I'm running the Tunit version and stuffing LPG down it's throat, still no EGT to worry about :sly

 

[Kishada]

Dont worry about EGT you'll never get it off the needle :lol
At best the chip will have got you about 25 extra horses . I'm running the Tunit version and stuffing LPG down it's throat, still no EGT to worry about :sly

That's good to know, thanks for that info.

The gain at standard setting was tremendous but simply too much fuel at idle (shuddering when coming down from 1250 to 750rpm and when sitting at idle).

Currently running at -1.5 turns which provides some improvment with no running issues.

What I can conclude is that this chip makes me realise what gains are possible with a re-map (tremendous) but not achievable with a £62 chip.

Don't get me wrong, it's still an improvment and definitely more than 1/8 of the 25bhp from a superchip remap in terms of what it cost vs that so in that respect good bang for bug, but the indiscriminatory manner in which it increases fuelling across the rev range meaning the engine can't cope with the increase in fuel it needs higher up when sitting at idle means the sledgehammer approach still has its limits!!!

How much bhp has it added?

I'll check my seat of my pants calibration and report back :lol

 

[makeitfit]

I have mine run through a small switch so I can keep it turned up big style :sly and switch it off at idle. I did have it through a micro switch on the throttle but now I only use the truck off road I dont bother
The Tunit chip cheats the MAF figures though, fuel is still proportionate to throttle position

 

[stinka]

That's good to know, thanks for that info.

The gain at standard setting was tremendous but simply too much fuel at idle (shuddering when coming down from 1250 to 750rpm and when sitting at idle).

Currently running at -1.5 turns which provides some improvment with no running issues.

What I can conclude is that this chip makes me realise what gains are possible with a re-map (tremendous) but not achievable with a £62 chip.

Don't get me wrong, it's still an improvment and definitely more than 1/8 of the 25bhp from a superchip remap in terms of what it cost vs that so in that respect good bang for bug, but the indiscriminatory manner in which it increases fuelling across the rev range meaning the engine can't cope with the increase in fuel it needs higher up when sitting at idle means the sledgehammer approach still has its limits!!!

How much bhp has it added?

I'll check my seat of my pants calibration and report back :lol

u need a boost gauge and a decent manual boost controller like this :

http://item.mobileweb.ebay.co.uk/viewitem?itemId=220537042109&index=4&nav=SEARCH&nid=96949499354

That will help if the chip adds no boost as its pointless just dumping more fuel in without equally more air

 

[Kishada]

I did think about a switch to turn it off at idle.
A microswitch ala throttle activation switch sounds like a very good idea.
I don't want to increase the boost on the engine at all unfortunately. When I did the headgasket it was a 3 notch I pulled out and only found that out after having the head skimmed so it now appears that it would have been skimmed twice!!
The tunit chip sounds a lot better in terms of running off the air flow meter!

 

[stinka]

Yeh fair enough on the head skim situation. My pug hdi was ruined after I did the head gasket on it, was running 19psi before and about 160bhp but after head skimmed it hated boost and lost a lot of power, drove terrible

 

[stinka]

If u are serious could you not run 2 thin head gaskets and a thin plate ? Seal the boost realese valve up on inlet and chuck about 18/22 psi through it and get about 170bhp ??

 

[stinka]

If u are serious could you not run 2 thin head gaskets and a thin plate ? Seal the boost realese valve up on inlet and chuck about 18/22 psi through it and get about 170bhp ??

Googling suggests that you can run as low as 15:1 comp ratio on a high power high boost Diesel engine to get big power, stock on td27 is 22:1 so I think the double HG and sandwich plate is something I might have to do some more research on

 

[makeitfit]

You can get high boost sure, BUT you just can't get enough fuel. The pump just can't do much more. There's a bit more available with better injectors I'm told.
My solution was to stick some LPG up it. That way all I needed was more air in the mix and so the modded comp wheel on the turbo :naughty
I'll get mine on a rolling road soon and see what it has :thumbs

 

[stinka]

How do you improve the injectors ? Change the tips ? As far as I know the tips can't be modded or drilled

 

[makeitfit]

I'm looking for the info I had on that. Timbo told me what he did on his. He was running 200bhp on his T2 :naughty Stand alone ECU and some injector fiddling :thumbs I'll be back

 

[stinka]

Timbo ? Former member ?

Td27 ?

That does sound epic, and tbh this engine does seem massively under stressed in stock form, well obviously it is with its reliability and longevity

 

[makeitfit]

Timbo ? Former member ?

Td27 ?

That does sound epic, and tbh this engine does seem massively under stressed in stock form, well obviously it is with its reliability and longevity

Yep TDi and he was a member.
Search his threads :sly http://www.nissan4x4ownersclub.com/forum/member.php?u=889

 

[Fez_uk]

I'll get mine on a rolling road soon and see what it has :thumbs

Give me a ring when you do mate, I will get some footage of it :naughty

 

[makeitfit]

Give me a ring when you do mate, I will get some footage of it :naughty

No need mate it'll be just like this :lol

<iframe width="560" height="315" src="http://www.youtube.com/embed/v4T1WT02GOA" frameborder="0" allowfullscreen></iframe>