tuning box

[makeitfit]

but really you should replace the maf and be done with it!

Tell me more please :augie
I'm soon to buying a new one at 80 odd quid from Spain. So if I can invest that elswhere toward more omph, count me in :naughty

 

[Paul]

Tell me more please :augie
I'm soon to buying a new one at 80 odd quid from Spain. So if I can invest that elswhere toward more omph, count me in :naughty

Would also like to know more on this please..

 

[Timbo_1975]

In a nutshell - assuming the engine is in tune and the boost pressure set somewhere near right, if your maff will output 4.5v under full load, then that is all you can do. Putting it up to 5v won't improve anything.

 

[rayf3262]

In a nutshell - assuming the engine is in tune and the boost pressure set somewhere near right, if your maff will output 4.5v under full load, then that is all you can do. Putting it up to 5v won't improve anything.

You are quite correct, the simple act of "Putting it up to 5v" will not improve anything, and at no point has it been suggested that raising the output to greater than 4.5V would do so.

4.5v is absolutely fine as a maximum, there is certainly no benefit to be gained by raising the output beyond this.

However, what does matter, is when this maximum is attained.

A dirty MAF will be less sensitive to airflow and cleaning it will generally improve things, but unlikely to restore it to as new spec.
Similarly amplifying its output will allow the output to be much closer to where is was when new. The vast majority of Bosch MAF's do not fail catastrophically , they degrade over time, often imperceptibly, but nonetheless significantly.

For sure, it would be all to easy to push this amplification beyond the window of RPM vs MAF o/p acceptance, but then why not operate at the top end of this window. It is after all adjustable.

Mechanically driven cooling fans are frequently removed to gain a just couple of unnoticeable BHP.....

 

[badger]

Having read the link on ebay, inference is that unit piggy backs on pump not maf?
We discussed this some time ago, all kind of ways to fool the ecu, one that I have done to great effect before is to alter fuel temp reading, is this unit doing this?
That in essence was what the 99p resistors were doing in most cases.
It is not out of the question that this company has cloned the tunit box, but it is going to take £90 to find out.
In all honesty after putting new overflow valve in I have all the power and improved mpg I could want.
Variable pump pressure valve from the states is about £30, and reading the Cummins forums gives up to 35% power increase http://torkteknology.com/products.php?product=TORK-TEK-CUMMINS-ADJUSTABLE-OVERFLOW-VALVE-OFV010.

did a long run yesterday towing a big genset, extra power was brilliant, and figures not fully in yet, but mpg appears to have gone past 30mpg with trailer!

 

[rayf3262]

Having read the link on ebay, inference is that unit piggy backs on pump not maf?

This is the link Paul posted:
http://cgi.ebay.co.uk/TUNING-CHIP-Fo...item3a630a3987

and at the bottom of the page it says:
"The device will "Piggy Back" onto your IAT sensor lead and therefore you must be able to locate this . This is near the air intake / air filter. This is the safest place to connect this device.The sensor you connect to is 2 inches round and 2 inches long and has a plug with 2 leads.This chip mod connects to these too leads.Make sure you can find these.
For diesel engines the device may be required to fit to the maf sensor , instructions are included for these."

Seems to suggest it is MAF orientated...???
And all with just 2 wires? !!

 

[badger]

that link doesnt seem to work, i was refering to this one, http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=350282081020&ssPageName=STRK:MEWAX:IT

posted on page 1, it could well be smoke and mirrors, but at the end of the day, without a remap, all these box's in one way or the other are "fooling" the ecu to think a sensor is recieving whatever, just some do it better than others.
i must admit i wanted one of these, and would have bought it, but now car is mended, thanks to you ray, with the advice on ecutalk, i cant see the point in more percieved power, it is fine, and remeber i before this had a 175Bhp xtrail.
i think the problem maybe bhp losses over the years, and new owners not knowing what to expect, i honestly have never known such an improvement as the new o/f valve has made, pump presure does not alter now on ecutalk, where as before it was dipping at each throtle blip, and dropping right down on full load.

thanks again for pushing me into geting a lead and prog.

 

[glen]

power box

I had power box fitted at a BMW garage,went in for air con re gasing. The owner said he add just fitted a power box on is brother in laws nissan T2. He said what a difference it made, more power in the rev range. No flat spots its not sold as a fuel saving device. £350 fitted. mine had to be solderd in place some do just plug in under seat.

fitted 8 years now no problem with it

Glen

 

[geoffdown]

I had power box fitted at a BMW garage,went in for air con re gasing. The owner said he add just fitted a power box on is brother in laws nissan T2. He said what a difference it made, more power in the rev range. No flat spots its not sold as a fuel saving device. £350 fitted. mine had to be solderd in place some do just plug in under seat.

fitted 8 years now no problem with it

Glen

That box power box is it the same1 from ebay and do u no anymore about the t2 fitted with the power box I.e where he got it from thanks

 

[glen]

No only remember it been a POWER BOX VP 37 he solderded it in,the lads at this garage were good at what they did and it works,my uncle had a newer T2 and i let him drive mine he was well inpressed if you leave in third gear and give it some stick it shifts, the rev range is good and no flat spots and i still get 28 to 30 to gallon when driving normaly. thinking about a newer T2 and would take out and fit again in another.

Glen

 

[geoffdown]

ok i have bought the tuning box cost £100 from e bay will lit u know in 6 to 10 days time if its shit i will try and send it back and get the £90 back so only lose £10:thumb2

 

[zippy656]

what one did you get??

plug and play type?

 

[geoffdown]

what one did you get??

plug and play type?

you cant get plug and play for the 2.7 tdi it piggy backs the wiring on the pump from what i can make out will let you now when it arrives:thumb2

 

[zippy656]

sounds good to me


pics and words for a down load too..

help others who follow...

 

[rayf3262]

you cant get plug and play for the 2.7 tdi it piggy backs the wiring on the pump from what i can make out will let you now when it arrives:thumb2

As Badger has said... it's all about faking the information from various sensors, in this case it's likely to be the control sleeve positional feedback from the pump that will be altered on it's way back to the ECU....
Let us know how well it works.....................:thumb2