Pre Bobbox tests...

[Shab]

Get out there and fit it, straight away!!!!!! You won't regret it...

I can't I'm at work...thinking of taking safternoon off though...I've already printed off your instructions...

[Toyney]

the way i see this Bobbox, it is very much like a power commander on a motorbike. improve the fuel mapping and you instantly improve the engines performance for the same amount of fuel intake.
Like Tony said, engines are built with a certain level of detune... which means we can give them abit of a tune up ourselves and see results.

if you take an old 1200 bandit ( thats a motorbike to those non motorbike folk on here) which still set to the factory tune take off the original end can/silencer and swap it for one without baffles the engines built in ECU automatically compensates and adjusts the fuel mapping and you can get a staggering 12BHP increase... thats the most ive ever known for a simple silencer swap on a bike.
I have to read and redraw dynographs every day virtually and the most popular more effective way getting more power from an engine is with a decent exhaust full front to back system and a programmable power commander.

the most common improvement I see is smoother midrange and bit extra on the max. I imagine it must be quite similar for cars/trucks. I would expect in real terms a bobbox to make the engine run a bit smoother and provide a marginal increase in power near the end of the revs. torque is often smoothed out and increased too after a decent fuel remapping...

but im just guessing because diesel isnt my speciality

[CaptainBeaky]

The only incontrovertible proof of this particular pudding would be to get dyno charts and fuelling curves for before and after fitting, and possibly with and without freer-flowing exhaust and uprated injectors.

I am, of course willing to lend out my truck for this testing, on the basis that I get to keep the toys afterwards

[Shab]

The only incontrovertible proof of this particular pudding would be to get dyno charts and fuelling curves for before and after fitting, and possibly with and without freer-flowing exhaust and uprated injectors.

I am, of course willing to lend out my truck for this testing, on the basis that I get to keep the toys afterwards

You are absolutely right of course. A Dyno test however, does not show "driveabilty", something that was very noticeable on my Audi...

@ Dave J. What is the screw on the side of the Bobbox for? He mentions the adjuster [the dial with 1/4, 1/2, and 3/4 on it] but not the screw.

I've just realised, I have to vist "the Monkey shop of Idiots" for a crimper....oh God........

[dave.j.robbo]

@ Dave J. What is the screw on the side of the Bobbox for? He mentions the adjuster [the dial with 1/4, 1/2, and 3/4 on it] but not the screw.

Do you mean the thing on the opposite end of the box to the connector?

If so, it isn't a screw, it's the fuse!!

[Shab]

Do you mean the thing on the opposite end of the box to the connector?

If so, it isn't a screw, it's the fuse!!

Doh...yeah, looks like a miniture rad cap...didn't dare touch it in case it was an adjuster of some sort....

[Apache]

Do you know how your radio works in the truck? I mean REALLY know?

We all just accept that it's a radio, and it will do exactly as it says on the tin. Why can't you accept that the Bobbox will do as claimed?

Sorry, but yes I do know *exactly* how my radio works. I am an electronics design engineer with a background in control and telemetry for drone aircraft, but now more in systems engineering.

Not meaning to be smartassed, honest. I just like hard proof before I spend hard-earned, so look forward to *objective* results from people who are using bobboxes(?).

[dave.j.robbo]

Sorry, but yes I do know *exactly* how my radio works. I am an electronics design engineer with a background in control and telemetry for drone aircraft, but now more in systems engineering.

Not meaning to be smartassed, honest. I just like hard proof before I spend hard-earned, so look forward to *objective* results from people who are using bobboxes(?).

Sounds to me like YOU would be best placed to buy a box, and then work out how it works, then.....

[Apache]

even if it is a few simple resistors bob is prob 1 of few people that know how to make these items, so realy you are paying him for his kowledge.
When all said and done thats all anybody ever does with any item being repaired/modified, most people take there truck to a mech cause they dont know how to do it there self!!. in some cases i have taken my cars to garages but only when i have no time. I once took my sierra for a cluch change due to not having time and when i got the car back the first thing i did was, on mi back and checked all the fixings that had been moved during the change. It was a good job i did as there were only 2 bolts holding the gearbox on.... gulp......

so kowledge is somthing that we all have in our own jobs and share with others for a price......thats life.....

Mmm, mechanical things I'm OK with up to a point then I'd prefer to hand over to someone with more expertise than me, but I do know electronics and if Bob's device is a couple of resistots in a box, I'd be most brassed off after paying £200 odd quid for 10p's worth of bits. (Development costs dont effect an entire production run, or we'd all be paying millions for our TV's)

I can only see this device changing the fuelling, as Tony seems to confirm. I suspect if he's the clever type, then it will change the fuelling based on the rate of change of the TPS rather than just the position, otherwise you *would* just dump more fuel in all of the time, but this to me doesn't sound like a difficult job, so it's hard to understand the mysticism behind it. It's gonna be a simple device.

I would guess that the ECU would sense the greater amount of fuel and match that with air? Would this not require an increase of boost pressure then? And a way of expelling the increased volume of gasses more efficiently? As Tony says, there are lots of links in this particular chain.

Anyway, if someone is going to produce some sort of hard fast objective results (rather than 'it's much better!'), that would be great, and would shut this geek up for a while!

[CaptainBeaky]

Sorry, but yes I do know *exactly* how my radio works. I am an electronics design engineer with a background in control and telemetry for drone aircraft, but now more in systems engineering.

Not meaning to be smartassed, honest. I just like hard proof before I spend hard-earned, so look forward to *objective* results from people who are using bobboxes(?).

Objective proof is the only type there is! Not objective = not proven.

[Apache]

Sounds to me like YOU would be best placed to buy a box, and then work out how it works, then.....

I might have to if you lot keep telling me to 'just believe'

If I had the time, this is the sort of thing I'd love to get stuck into and see if I can produce something to sell to you lot!

Mmmm... gold plated fuses... gold plated battery terminals...

[Apache]

Objective proof is the only type there is! Not objective = not proven.

Yep, as against subjective "much better" type responses. I thought I was the only pedant round here!

[Shab]

Mmm, mechanical things I'm OK with up to a point then I'd prefer to hand over to someone with more expertise than me, but I do know electronics and if Bob's device is a couple of resistots in a box, I'd be most brassed off after paying £200 odd quid for 10p's worth of bits. (Development costs dont effect an entire production run, or we'd all be paying millions for our TV's)

No, the development costs are recouped over the entire production run...


For what it's worth, I don't think you are being smart arsed, just sceptical...


.

[legendgamesmaster]

so, the smurf ECU is not easy to re-map, as its not the II version.
thus it would seem reasonable to be able to adjust the input parameters via a box of elastrickery, thus fooling the ECU and getting it to change the way the engine works.
OR (less likely) the opposite, intercept the ECU output to the fule gubbins and adjust them.
so, in effect the bobbox is a programmable front end to your ECU. its basic, so the adjustment is via a screw rather than an rs232 port.
perhaps an rs232 interface and a small xmodem program to adjust the screw via a laptop would mean we all think its far more complex and go buy one!!

I'm with apache on this - unless I know its a bona fide bit of kit, i aint buying it. Plenty of people believe in homeopathy, but I dont 'coz its factually a load of ballcocks.... and scientifically it has been shown (i belive statistically 'proven' ) not to work - still some people believe . fair enough, thats up to them. however, i am not sure if the bobox is homeopathic.

[Shab]

its basic, so the adjustment is via a screw rather than an rs232 port.
perhaps an rs232 interface and a small xmodem program to adjust the screw via a laptop would mean we all think its far more complex and go buy one!!

It actually does have a serial port...it's used in this case to connect the wires to the box...

It's a long time since I worked with Com ports, but that could be how Bob programs them....maybe