Maus en 4.8

Engines and Engine Systems
AndriesS
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Maus en 4.8

Post by AndriesS » 14 Jun 2011 14:48

Is there any 4.8L owner who had a conversion done by maus? And the results?

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Re: Maus en 4.8

Post by Saltman » 14 Jun 2011 22:28

Now here is an interesting question!

I hope we get some takers as it would be nice to be able to compare the Maus conversion to the unichip and freeflow exhaust combination.

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Re: Maus en 4.8

Post by Tinus lotz » 15 Jun 2011 18:53

what are you planning to do?

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Re: Maus en 4.8

Post by Kagiso II » 15 Jun 2011 19:37

Herbie - that is what MAUS does ... Dastek chip & free flow & cams ... same as VanderLinde and SAC and the others - Some minor differences here and there - and work quality ... and precision ---
Don't bring God down to your level of faith ... bring your faith up to His level!

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Re: Maus en 4.8

Post by Saltman » 16 Jun 2011 16:43

Hi Oom Mac

AH!
Thanks, I was under the impression that Maus do the classic performance gains: porting, gas flowing, larger valves, cams, fueling etc ...
If they do chip & tune, then a comparison is not going to serve my needs!

FRANS, waa's jy ... ek moet weer met jou kom gesels oor die voor en nadele van 'n chip ... !

I am scared that with a chip & tune the 4.8 will run too lean when working hard (towing at speed etc) ... with the associated long term damage - head damage etc
... or the flip side, waste even more fuel ...

What say the guys who have 4.8 chips? Worth it? How do the gains manifest themselves? Better economy, more power & torque ... ? :think:
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Re: Maus en 4.8

Post by arnoldh » 17 Jun 2011 09:09

Hi Saltman

I am also scared. I did the powerflow, but also added a roofrack to the mix and it did not make one km/l difference. I get barely 4.0km/l to work and back and 4.5km/l on the long haul.

Everybody told me not to do the chip due to the damage, and apparently it does not work so well on a petrol?.

I am not at all technical and the fuel consumptionis the single most frustrating thing about driving a Patrollie!

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Re: Maus en 4.8

Post by JG Shields » 17 Jun 2011 10:03

Arnold, jou brandstof verbruik is uitermatig hoog. Dit klink vir my asof jy met 'n ander fout iewers in jou sisteem sit. Ek weet nie of dit sal sin maak nie, maar probeer om 'n ander ECU en TCM te leen, in te sit en kyk wat die voertuig doen. (Dalk ook sensors) Ek het 'n tyd gelede een van elk aan Sias verkoop. Dalk het hy hulle nog.

Die standaard 4.8 se verbruik behoort beter te wees as die standaard 4.5. Jy behoort nie minder as 5km/l in verkeer te kry nie, en minstens 5,5km/l op die oop pad. Terloops, ek kry met my 4500EFi Cruiser, ingesluit dakrak en IM suspensie, 5,5km/l in die stad en ek het verlede naweek Kimberley toe en terug @ 120km/h (speedo cruise GPS spoed en afstand) presies 6km/l gekry. Ja, ek het 'n chip en FF uitlaatstelsel in, maar nogtans...die 4500EFi Cruiser is bekend dat hy swaarder is op sous as die Patrol 4.5.
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Re: Maus en 4.8

Post by Wheels » 17 Jun 2011 10:17

Fuel consumption is to High. My 4.8 is my daily drive (24km's to work) and I get 5.6 km/l and open road with roofrack etc... up to 6.5km/l Towning my offroad trailer I get 5.5 km/l. Your one option is to look at your maf.

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Re: Maus en 4.8

Post by Saltman » 17 Jun 2011 11:33

Whoa!

Lets just compare apples with apples here please!

I am assuming the 4.8's that get 5,5 urban and 6-6,5 km/l open road are automatics without roofracks and no towing?

My MANUAL 4.8GL only achieved 6,5 km/l ONCE in its lifetime with me and that was at 120 km/h (GPS) from Rustenburg to CT on the acquisition trail ... The reason being that the GL turns the engine at 3000 RPM at 120 km/h in 5th whereas the autos are closer to 2200 - 2400 RPM I believe. However that rev range makes for brilliant towing! Stick it in 5th and leave it there! :thumbup:

Since that initial trip I sooooo much enjoy that straight 6, that consumption takes a backseat. Mods include bumpers front and rear, 2" OME suspension lift, 33" MT tyres, etc, which add up on the consumption scale. Also did the 63mm freeflow exhaust and that sound is fantastic!
Last year's Botswana tour consisted of a full Patrol (5 in the family), roofrack and towing an Imagine Trailvan. This is significant as we camp self sufficient, so everything including the kitchen zink (in the trailer ... he he he) is onboard for 4 weeks. The result at 130 km/h (GPS) on the open road (Ghanzi to Gobabis to Windhoek to Noordoewer to Cape Town) was 4,39 km/l on average. To me that is in CTM territory ... (not too shabby hey Nige ...) as the car in this configuration is not exactly a symbol of aerodynamics! Worst consumption on the trip was 3 km/ fully loaded in the Moremi and Savuti plowing through heavy sand and water ...

So I fill up and drive!!! At least I get there and back home without worries ... unlike my diesel touring mates ... although to be fair, only the one diesel had fuel problems (cracked tank = dirty fuel, contaminated fuel in Kang etc), the other diesel (make will remain anonymous) had suspension and later gearbox problems ...

What can I say, I still enjoy the 4.8, but thanfully it is not my everyday ride!
I am still wondering though - if I continue with my existing driving style, will a chip be more economical?
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Re: Maus en 4.8

Post by Peter Connan » 17 Jun 2011 12:00

Gents I may be speaking out of turn here, but it is my understanding that any or all of these tuning shops will give you any mod you are prepared to pay for. Thus they would normally start with a chip, and possibly a free-flow, and head work etc. would be a "stage 2 conversion" or words to that effect.

Further, as far as I understand a chip just allows the tuner to change certain parameters, and what parameters are changed and to what extent they are changed is up to the tuner. Thus you could put in a chip and see no difference at all, or you could blow the engine in a week, it all depends on what the tuner has done. So the results of a chip are down to the experience and skill of the tuner, as well as your brief to him? Frans (and others) knows much more about this than I do though.

Further, a head job would not come to full fruition if a chip was not used, and again the skill and experience of the person doing the work can have a large effect on the results.

However as JG often says, the manufacturer has spent millions creating a system that works as well as possible over a wide range of conditions. Modify at your peril. Remember that when the 4.8 was designed, economy was already a major consideration.

However there are components of the system (most significant probably the MAF) which get dirty from use and then effect such factors as fuel consumption negatively. It may well be worth getting them cleaned every 100 000km?
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