Diesel Bob Power Upgrade.

[JonnyBoy]

Bought a BobBox VP37 power upgrade from Diesel Bobs last week and fitted it at the weekend.

Wow what a difference it makes to the engine, seems much more responsive and more powerful. The box itself is power adjustable via a little jumper connection inside . Gives between 10 - 30 horsepower depending on position. I am leaving it on 'Bob' set position of 25hp.

Has anyone else experience of these? The main reason I wanted extra power is for towing, so after making sure everything is OK for a month I will probably disconnect it and only connect it when towing.

Just one other comment the service from Diesel Bobs is second to none that I have experienced, I had some issues whilst fitting regarding wire allocations and called Bob twice on Sunday and he was very helpful.

I got a £20 discount as well when I mentioned I was a member of the club.

 

[jace]

ive been trying to find a "chip" everyone else has stopped doing them does it improve the bottom end i find im havingto give it quite a few revs to pull away quickly my mates warrior is same i put it down to modern electronics

 

[Thomas-the-Terrano2]

ive been trying to find a "chip" everyone else has stopped doing them does it improve the bottom end i find im havingto give it quite a few revs to pull away quickly my mates warrior is same i put it down to modern electronics

echo feelings jace, think tdi may be less torquey than td down to intercooler n injection mapping. the wide ratios dont help either 1st is quite high or else final drive is in name of economy.

as for chips theres another issue of make of ecu, as in hitachi in older tdi's like ours or bosch 98 on. some kits will only work with bosch.

 

[eclipse]

I have had experiance with my Rangie, tried one with out a chip and tried one with, it brings the 2.5TD up to almost the equivelent power of the 4.0 petrol with better fuel economy, sadly I dont thing I can get one for my R3M.

 

[jace]

a descent diesel mechanic will be able to get a bit more from yours i think mine has the hitatchi setup its low down where you miss the power

 

[glen]

POWER BOX

YES,
I had mine fit 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 add made more power in the rev range. No flat spots its not sold as a fuel saving device. £350 fitted. mine add to be solderd in place some do just plug in under seat.

fitted 3 years now no problem with it

Glen

 

[JonnyBoy]

I tried all over to get the plug in version and was told by all that they are no longer available due to low demand. Was told in the same breath from PSI Powerbox that he could have sold 20 in the last month alone!!!

The BobBox is a solder in unit for the Bosch system but is not very complicated to fit, but may not be for the faint hearted, as you do need to tap into the wires from the multi plug connection for the injection pump.

That said I still had it fitted in less than 2 hours and that included 2 calls to the man himself.

The other big bonus as far as I was concerned is the price £211 although that obviously does not include fitting.

The thing that I am interested in is long term effect on the engine? Any views you guys? I must admit to hesitating for some time before deciding to go for it.


JonnyBoy.

 

[Jocky]

I tried all over to get the plug in version and was told by all that they are no longer available due to low demand. Was told in the same breath from PSI Powerbox that he could have sold 20 in the last month alone!!!

The BobBox is a solder in unit for the Bosch system but is not very complicated to fit, but may not be for the faint hearted, as you do need to tap into the wires from the multi plug connection for the injection pump.

That said I still had it fitted in less than 2 hours and that included 2 calls to the man himself.

The other big bonus as far as I was concerned is the price £211 although that obviously does not include fitting.

The thing that I am interested in is long term effect on the engine? Any views you guys? I must admit to hesitating for some time before deciding to go for it.


JonnyBoy.

I tried to get a PSI Box between christmas & new year and were told no longer available

Jonnyboy any chance of doing a write up on how to fit the bob box on your T2? I am interested in getting one, but messing with car wiring is not something I like doing if i've not got clear instructions.

-cheers-

 

[jace]

im sure engine more than coping with extra power they leave factory designed to be ultra conservative to suit most average joe

 

[Terranosaurus]

im sure engine more than coping with extra power they leave factory designed to be ultra conservative to suit most average joe

Yeah, I'd agree with that as modern diesels go these are fairly poor performing (BHP or lbft per litre) they will be more than capable of handling a 30% power increase. It's not like the boost pressure is being altered, all these boxes do is increase the fuelling (Diesels run lean almost all of the time). You might notice slight increase in soot etc from the exhaust.

 

[jace]

the 2.5 navara is coming out at 174bhp now i imagine its terrible low down why did they all drop to 2.5 mitsi had the 2.8td avalible nissan the 2.7td dont make scense to develop new engine

 

[Terranosaurus]

the 2.5 navara is coming out at 174bhp now i imagine its terrible low down why did they all drop to 2.5 mitsi had the 2.8td avalible nissan the 2.7td dont make scense to develop new engine

See above post.

The 2.7 engine is as bad as a landy engine, my 2.4 petrols no better either. There used to be this ethos that performance doesn't matter with 4x4s, the boom of the SUV market has meant massive competition and they've imported technology from the road car side instead of the commercial vehicle side of the business. Turbo Diesel technology has come a long way in the last few years, most manufacturers are now detuning their best turbo deisels so they don't emarass the so called top of the range petrol performance models, which is why chip tuning of diesels is such big business.

My bet would be that the new 2.5 engine will knock the spots of any of the T2/Mav engines.

 

[jace]

2.5tdi landys are hatefull gutsy enough but they just feel so lethargic it just seems weird to just dump an engine mitsi use a 3.2 in shogon but not l200 my mates is terrible trying to tow anything is hopeless but he was ofered the power upgrade from mitsi for about £800 i want a navara so would be interested to have test drive for comparison!

 

[terranokid]

The 2.7tdi is a very low spec turbo diesel with electronic controlled pump.
when you look at the newer engines they have 4 valves per cylinder, gas flowed manifolds and the electronic controlled injectors can now pulse and give very accurate metering of the fuel to give more bhp and torque you could probabaly get better performance out of a modern 2ltr than you could our 2.7's.

 

[jace]

16v has took its time to reach diesels remember the first hdis with 3 valves per cylinder lol the taxis we used to work on were all hdi and tdi including the hatefull fiat scudo euro cab so realise performance has moved on a bit but uasally they sacrificed bottom end power to claim high bhp my mates vw engined taxi was 130 it wasnt as flxible as the older 110 hp version needed muck more right foot to get you moving

 

[terranokid]

Engines have moved on a long way in a short amount of time just in the last 6 months the new diesels make the hdi engines look so old. The new 2ltr Bmw tdi has 16v variable valve timing, pezo electric injectors and lots more I saw a cut away version of the engine it looked very impressive but they wouldn't let me have one for my terrano.

 

[jace]

never really liked hdis they made so many different variations just to complicate things i remember at colegue there pride an joy was a cut down wankel engine now they get donated new jags to strip and play with! born to soon!

 

[rustic]

I could do with a few more BHP my 2.7TDI turbo, but no intercooler could do with more power when towing 2 tonne, on hills it is difficult to get it into 2nd. but if you start off at a higher speed on the same hill you can take it in 3rd with ease. All to do with torque and power band.
What is the most cost effective way of improving the torque/power of my Mk 1 maverick ?

My wifes Picasso is a 1.6 HPI diesel, 110 hp, quicker than the 2.0 diesel, and 2.0 petrol ... so technology is out there, even returns 55 mpg at 70mph

Just in case you wondered what I am doing at 5.00 am in the morning... going to pick up some friends from Birm Airport soon...
Guess which vehicle we now use on long runs..

 

[terranokid]

You could try Hiclones and a good quality high flow airfilter or you could fit and intercooler both will give you a few extra bhp and a bit more torque but dont expect big gains if you did both you might squeeze about 15bhp more. There are other options like raising the turbo boost pressure and increasing the amount of fuel that is injected this will give better results on hills but if its not done right it will shorten your engine life.

The first thing and the cheapest that i would do is give your engine a good service with good quality filters and injector cleaner that goes in the filter not in the tank also. you need to adjust the tappets and pump the tyres up you may be suprised what a good service does for your engine it wont add any bhp or torque but it will restore your engine back to what it should be.

 

[rustic]

You could try Hiclones and a good quality high flow airfilter or you could fit and intercooler both will give you a few extra bhp and a bit more torque but dont expect big gains if you did both you might squeeze about 15bhp more. There are other options like raising the turbo boost pressure and increasing the amount of fuel that is injected this will give better results on hills but if its not done right it will shorten your engine life.

The first thing and the cheapest that i would do is give your engine a good service with good quality filters and injector cleaner that goes in the filter not in the tank also. you need to adjust the tappets and pump the tyres up you may be suprised what a good service does for your engine it wont add any bhp or torque but it will restore your engine back to what it should be.

Thanks Terranokid, I have done quite a lot of work on the Mav this past month, in fact since joining this club, with various changes (especially new Air Filter) I do put injector cleaner in the fuel, but not yet into the fuel filter.. I will prob get a new filter first in case it dislodges all the gunge in the filter.
Not done the tappets for some time, thought if they don't rattle... leave alone. Simple enough job to do.. will do that next.
The mav passed the MOT and emissions test last week, but garage didn't give me the results this time....

I changed the transmission oil and gear oil, adding some molyslip, and also raised suspension to near std height. Adjusted the handbrake and rear shoes.
The mav hasn't run this well for a long time. I think Hiclones may be a good option, I will search some more on that.

In fact since joining the club... I have fixed problems I didn't know I had got...

As in life things deteriate slowly that you don't always notice them.