[chris]

Yip I have chipped mine the reuslt was as great as expected but never the less there was an improvement in fuel consumption in open road 120 with aircon on 9.24km/l.
But in town not more than 6 km/l which is strange.
Torque went from 230 nm to 260 nm measured on flywheel . Highest torque was achieved on 4000 rpm at 260.3.
Kw went from 94 to 103.2 on 5000 rpm.
I had a powerflow free flow fitted , not a noisy one though and had the viscious fan removed to fit an electric one.
The only problem picked up was intake manifold flap air leak which I am to remove and have redone to a more permanent fix done by someone in JHB and a rerun on dyna to see if there is better results. It is a Dastech chip .
Hope this shed some light.

[macjohnw]

Yip I have chipped mine the reuslt was as great as expected but never the less there was an improvement in fuel consumption in open road 120 with aircon on 9.24km/l.
But in town not more than 6 km/l which is strange.
Torque went from 230 nm to 260 nm measured on flywheel . Highest torque was achieved on 4000 rpm at 260.3.
Kw went from 94 to 103.2 on 5000 rpm.
I had a powerflow free flow fitted , not a noisy one though and had the viscious fan removed to fit an electric one.
The only problem picked up was intake manifold flap air leak which I am to remove and have redone to a more permanent fix done by someone in JHB and a rerun on dyna to see if there is better results. It is a Dastech chip .
Hope this shed some light.

That gives me hope Cris, at the moment I am getting 6.5km/L at best! Town driving is even worse. What is the story about the intake manifold flaps? I did not know there were flaps in the intake manifold.

[macjohnw]

Right, the Pajero is at SAC at the moment - I will post some feedback once I get a chance see the consumption figures and get to drive it for a while.

[Gerrit Loubser]

What is the story about the intake manifold flaps? I did not know there were flaps in the intake manifold.

The 3.5 DOHC motor features a variable inlet manifold with six butterfly valves on a vacuum actuated shaft, that switches intake flow from long intake tracts for low engine speeds to short tracts for high engine speeds. Unfortunately these are prone to air leaks due to the fact that the shaft pivot bushes wear out (even to the point of falling out and being ingested by the motor).

[macjohnw]

The 3.5 DOHC motor features a variable inlet manifold with six butterfly valves on a vacuum actuated shaft, that switches intake flow from long intake tracts for low engine speeds to short tracts for high engine speeds. Unfortunately these are prone to air leaks due to the fact that the shaft pivot bushes wear out (even to the point of falling out and being ingested by the motor).

Thank you for the feedback Gerrit. Sounds like this can seriously influence your power and performance.

Well, I drove the car over the weekend and must say it is simply a pleasure now. The engine is very responsive/smooth and you can feel the difference when putting down your foot, it goes like a rocket. It takes less effort to make it go, I will have to wait and see what the fuel consumption is like.

kW before: 94kW
kW after : 109.5kW

Torque before: 185Nm
Torque after : 209Nm

Cost : R3250-00 VAT Incl (also incl. air box mod)

The kW figures above are on the wheels I believe. I will also visit Schalk at Dyno Logic when time permits, I reckon he might be able to set it even more accurate. I will also tend to the exhaust when I visit my brother's shop next time - a free-flow for free!

Note: If this chip saves me 1km/L, it will pay itself back in 3.5 months seeing that I am doing about 5000km/month.

[tafryer]

So have you decided to do this upgrade? If so, were you happy with the results? Regards Trevor

[Gav3.5V6]

Sorry I know this may seem a stupid question, but just reacently having bought my 1st Pajero how can I check to see if it already has a unichip

And what cost are we looking at here?

Gav

[macjohnw]

I don't know how they check if there is a chip installed or not - I suggest you phone SAC regarding this.

The chip, installation, pre- and post dyna's cost me R3250-00 VAT Incl.

There is a noticeable improvement in driveability - it is a pleasure to drive now. I am busy checking the fuel consumption, but the roofrack and roof top tent are not helping at this stage. I also noticed my lamda sensor is missing, which might be influencing the consumption.

[Freshman]

I took my Pajero 3.5 DOHC to SAC last week as my ECU is packing up. Huge problems with the engine in that it had the power of a 1600 Golf! I had everything tested/checked for faults or problems, nothing. All came to the same result : ECU. SAC installed a Unichip and it is a completely new engine, albeit coming from a very low base though! Maximum torque is achieved at 2500 rpm now, engine is much more responsive. Don't have fuel consumption numbers yet, but I strongly believe it will be lighter on fuel.

Max torque at 2500 rpm would be nice - especially when towing.
I noticed this graph from Dastek but it shows power before and after (both still max at about 5000 rpm) but they don't show the torque curve on their site which is a pity.
http://www.unichip.com/Mitsubishi_Pajer ... _Auto.html

I noticed you guys mention some "CRD" chip - is that a diffrent chip or the name of the fitment centre? Sorry - never heard of them - only know SAC and Dastek's uni-chip.
Lastly - Are all chips created equally or which is the best to fit to a 3.5 petrol?

Thanks

[4ePajero]

I noticed this graph from Dastek but it shows power before and after (both still max at about 5000 rpm) but they don't show the torque curve on their site which is a pity.

Since there is a direct relationship between power (kW) and torque (Nm), you can calculate it easily (use a spread sheet to create the graph):

Torque (Nm) = [Power(kW) x 9554] / rpm