Diesel Tuning Boxes

Jonners

Jonners

Jonners

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I got told by a race car specialist(so he claims) with a rolling road, that some of these boxes are bad for the fuel pump and the injectors...:confused:

I have a DTUK CRD2(Red Box) and was just wondering if theres any truth in his words and if the DTUK falls in to the badness category?

Anyone know what the safe limit of bhp and torque for an Isuzu based 1.7CDTi as used in Vauxhalls?

Thanks :o
 
As far as I was aware it's much better to get a map using OBD as each engine is slightly different and where as one will happily take an etra 30bhp another may struggle and start eating parts with an extra 10bhp.

In general they are not bad, but because they are not bespoke like a remap there is always the chance of problems.
 
No one would touch the car as it has a Denso ECU, mappers prefer the 1.7CDTi with the Bosch ECU :(

The DTUK box has an adjuster from 1-9 but so I put it on 3 :p
 
Most (read, not all) tuning boxed fool the map by altering the fuel pressure sensor into delivering more fuel.

Over time, this can kill fuel pumps (both low and high pressure) and injectors and even make ECU's go a bit crazy (they'll log all sorts of errors).

Much better to get a re-map if possible.
 
Lucero said:
Most (read, not all) tuning boxed fool the map by altering the fuel pressure sensor into delivering more fuel.

Over time, this can kill fuel pumps (both low and high pressure) and injectors and even make ECU's go a bit crazy (they'll log all sorts of errors).

Much better to get a re-map if possible.
Click to expand...

1) But which are the good and the bad tuning boxes?

2) I've heard that from a local rolling road company

3) No remap companies will touch a Denso ECU :p
 
Defcon5 said:
I assume this isnt one of those resistors or doom from Ebay? Do you still have the Corsa?
Click to expand...

No, whats a resistor of doom?

Yeah still do :o

Cable tied the box down now :p

02042009020s.jpg
 
Lucero said:
Most (read, not all) tuning boxed fool the map by altering the fuel pressure sensor into delivering more fuel.

Over time, this can kill fuel pumps (both low and high pressure) and injectors and even make ECU's go a bit crazy (they'll log all sorts of errors).

Much better to get a re-map if possible.
Click to expand...
Fooling a sensor is never a good idea, I guess the ECU may try to compensate over time....
 
What gain do you get from that box on the corsa? How well does a 1.9 CDTi SRi 150 bhp engine rempap? I guess it pumps up the insurance a fair bit!
 
Fothsn said:
What gain do you get from that box on the corsa? How well does a 1.9 CDTi SRi 150 bhp engine rempap?
Click to expand...

Not tried? Other 1.7cdti owners have claimed 140hp but I doubt it.

1.9CDTi with a map/tuning box the claims have been as far as 190-210bhp from what I've read on forums
 
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