Another NPS 300 4x4

[Thespoon]

Hi all....has anybody out there driving a NPS had anything done to increase engine performance, like aftermarket Chip or ECU from NQR or FSS models?
According to the specifications on the Isuzu website, most of the N series and the 550 model of the F series have the 4HK1-TC engine, the NQR having 139kw/510nm and the FSS 151kw/637nm. Would love to fit an ECU from either one. However read on another post that the DPD would have to be changed as well. Probably getting to expensive.....?
I fitted a DP chip to mine about 2 years ago.....there is an improvement (but never enough) and fuel consumption is about the same, 17lt/100km. (The DP chip is fitted on the downside of the ECU and only alters fuel delivery/timing)
Happy traveling
Adrian

[whatcharterboat]

Hi Adrian
....I have met a guy who has done it but he's the only one......is that what was in the thread you are referring to? He put an ECU (approx $1500) and the DPD (approx $2500) from a NPR 450 in his 300. Gave him 185hp up from 155hp. He said he wished had gone for the FSS550 ECU and DPD to give 205hp for the same money but all the Isuzu tech guys I talk to say that they wouldn't like to see that much going through the 300 gearbox.......when I look at the DPD , I don't understand why simply the 2 x thermocouples and 2 x pressure sensors couldn't be swapped rather than the whole DPD. Not sure........like I said, he was the only guy I've ever heard of that has done it.

Talk to Doug at Gold Coast Isuzu. He's pretty switched on with all this. I also spoke to a guy in WA who deleted his DPD too. He told me how he did it but again, if it's a new truck, you definitely need to talk to Doug re: warranty.

Failing that......Ozzyfishaman is very clued up on Steinbauer chips for the 300's. PM him.

I just posted some pics of a neat crew cab that tows a big Bushtracker. He is having a Steinbauer fitted on his way back too South Oz in the next couple of days.

Any more pics?

[Thespoon]

Hi John......yes that was the tread I was referring to (NPR 450 ECU). It also crossed my mind that an FSS ECU could be a bit heavy on the gearbox. I will leave it as it is for the time being as I have still another year warranty left. I'll have a chat to Doug next time I see him.
Glad you got out of your crash unscathed, I know you do some rigorous testing of your products, but this was taking it a bit to far......
Regards
Adrian

[Amesz00]

clearly ditch the whole lot and run one of these -

http://www.bosch-motorsport.de/en-US...6748922507.pdf

its a bosch diesel racing ecu, so no room for unnecessary things like EGR, DPDs, PM filters, or any of that rubbish. same thing that audi runs on thier V8 diesel LMP1 Le Man car that makes 750hp from a 5.5L on qualifying tune. with no smoke whatsoever.
mmmmm 650hp canter...
as far as the power chips go, i think the stienbauer does a bit better job than the DP, having said that ive no personal experience with the stienbauer. btw neither can control injection timing, only rail pressure and injector duration, because its downstream of the ecu, the chip cannot send the signal to the injectors any sooner than it gets the signal from the factory ecu. they do effect injector timing indirectly though, by giving the ecu 'false' (ie higher rail pressure, and telling the ecu that more power is required) information, the ecu can alter the factory set timing for x rpm, y boost, z accelerator position.
dont quote me on this stuff though...

[alan]

The steinbauer is definately a better unit than the DP chip, it does not increase fuel rail pressures which can damage your fuel system, it controls injector duration and still monitors all engine parameters as per std computer and can back off power if high temps are reached.

[Thespoon]

Thanks guys......bought a DP chip to support an Australian Made product as I was under the impression that both the DP and Steinbauer where working on the same principle. I stand to be corrected.
Also the Audi V8 is already old news as they had the V10 diesel and now have the V12 diesel in their race cars. Unfortunately none of them will fit the engine bay of my NPS, let alone pass ADR.......so as I said above.....for the time being....I'm happy with what I've got.
Cheers
Adrian

[Amesz00]

Also the Audi V8 is already old news as they had the V10 diesel and now have the V12 diesel in their race cars.

your right, i stand corrected. was more getting at what they're reliably pulling from a relatively small motor with the bosch system.

there is a new croud just starting off, called 'chipit'. based over here in perth, they seem to be rapidly gaining a name for themselves, if nothing else by the figures thier chipped vehicles are putting down. dont think they do anything for fg or isuzu as yet but when i aquire my 4.9 fg ill definitly be going to annoy them about making it go faster..

http://www.chipit.com.au/

not just an expensive electronic 'fuel screw' as most seem to be, but a proper tuning module (according to them) that comes standard with different maps to choose between, the ability to load more and change maps via laptop. also allows for full custom tuneability by laptop, software for which (unfortunetly) apparently only sold to certain 'approved' tuners... but still.
other interesting points that i like, all chips come with a boost de-limiter function (so the factory ecu doesnt chuck a sad when you run a few extra psi), also they say for 'race use only' they can offer programming to cover error codes thrown when removing the DPD + blocking the EGR port.
these sound like my kinda blokes!
Andrew

[Thespoon]

G'day all,
has anybody fitted the parabolic springs now available from ATW for Isuzu and Fuso?.....and if so.....do they work well and are you using them together with Robo Shocks or any other brand?
Regards
Adrian

[bptp7270]

Hi Adrian,

I think the parabolics are still being road tested by ATW and are not available yet. Looking forward to getting a set when they are finally available and I think they will be selling them with the robo shocks as a kit. Hopefully they will be a big improvement on the ride.

[SkiFreak]

I have had the ATW coil conversion done on my truck, which is really sweet by the way, and I have been told that the new parabolic springs have a similar ride. All that they lack is the articulation that the coils give you; and they are considerably cheaper...