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  #61  
Old 12-03-2012, 06:35 PM
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Re: CRD engine chip

Just an anecdote from personal experience........
my last 2 (3l) diesel Patrols were chipped - but not to any extreme and I was very happy with the performance gains.
Our CRD WK2 is a brilliant vehicle, different technology and chalk and cheese.

Presently it is sitting at a dealer in Orange NSW waiting for a fuel rail and sensor to be imported from the USA - 16 days off the road so far and counting. Be lucky if we get it back in another 2 weeks.
The thing shut down at 95k on the highway towing the van (scary), and could not be restarted. After recovery to the closest dealer it was found a logged fault - overpressure in the fuel rail - treated as catastrophic hence the shutdown. The fault was cleared and couldn't be reproduced but as I believed it was a safety issue the fuel rail and sensor (it is incorporated) will be replaced.
This experience and the knowledge that Jeep Australia definitely don't have a parts pipeline sorted will definitely make me wary of any modification to the ECU or any other component. A chip is NOT on my agenda.
The vehicle is great but my feeling is that it is too early in its life cycle out here be risking a protracted encounter with Jeep Assist or the dealer network. All too hard, and I can attest not a pleasant experience.
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  #62  
Old 12-03-2012, 10:57 PM
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Re: CRD engine chip

that would well and truly scare the pants off you. No power and in flowing traffic. OH SHOOT
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Old 06-28-2013, 08:39 AM
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Re: CRD engine chip

Quote:
Originally Posted by Chip Tuning View Post
Tuning a petrol enginee is quite different to tuning a diesel. If you get the AFRs wrong (lean) in a petrol engine the thing hand-grenades. In a diesel if you lean it out you just loose power. Zero harm done. If too rich it will blow plumes of black smoke but its noticeable so u know its wrong. Keep driving it rich can result in hot EGTs. However, in my opinion, u probably are not a tuner or a real crappy one to not see its too rich and/or EGTs are too high.

This is why there are a LOT of diesel Chips on the market and why people rebadge them and sell in their local market. (DP, Roo, Rapid, TunIt)

U never see people rebadging a Haltec (petrol ECU) ... too many risks so they let Haltec wear their own liability
Would you suggest to the jeepers who install additional modules to pay special attention to EGTs?
I've read somewhere that this is really the tricky part of the game (if the rail and/or overboost pressure is kept within the manufacturer limit), since EGTs greater than, let's say, 700 Celsius could lead to excessive thermal stress and wear.
But I don't find on the internet THE definitive guide to install an aftermarket EGT sensor and gauge: some say to measure the temp. as close as possible to the exhaust manifolds before the turbine, others suggest that it's safer to put the sensor just after the turbine, in order to reduce the risk of a catastrophic turbocharger failure in case of sensor break.
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Old 07-01-2013, 02:57 AM
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Re: CRD engine chip

Quote:
Originally Posted by mudsnow View Post
Would you suggest to the jeepers who install additional modules to pay special attention to EGTs?
I've read somewhere that this is really the tricky part of the game (if the rail and/or overboost pressure is kept within the manufacturer limit), since EGTs greater than, let's say, 700 Celsius could lead to excessive thermal stress and wear.
But I don't find on the internet THE definitive guide to install an aftermarket EGT sensor and gauge: some say to measure the temp. as close as possible to the exhaust manifolds before the turbine, others suggest that it's safer to put the sensor just after the turbine, in order to reduce the risk of a catastrophic turbocharger failure in case of sensor break.
Hi Muds

Yes the EGTs are important to monitor on a diesel. I recommend it when fitting a chip for more power.

700 may be ok for short intervals but prolonged high temps would be problematic in the least.

I wrote an article about this some years back.

You can read it here: Why are EGTs Important? | Chip Tuning Australia

The reason we all fit after the turbo is because, as you say, a tip failure is not going to stuff the turbo. You will find all manufacturers fit there. Secondly, we actually are not interested in the peak temps but THE DIFFERENCE between stock and then temps WITH Chip.

IE the manufacturer has done the testing and knows the temps in standard trim are fine. We just use the EGT Controller to limit what would be the temp after fitting a Performance Chip.

For race engine builders they place the probe right after the valve (or as close as possible to the valve) because they are interested in how hot things in the combustion cylinder is getting. And they will do this for EACH cylinder.
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Old 07-01-2013, 03:06 AM
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Re: CRD engine chip

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Originally Posted by Chip Tuning View Post
only a very few change both the fuel and air pressure maps. most just dump in extra fuel ... so yes, those that don't add more air so alter the air/fuel rations ... but for the worse.

in regards to the warranty issue frog_a_lot is on the money.

Aussie laws state that the fitment of an aftermarket part cannot be reason to void warranty. if a dealer says to you "that will void warranty" ask him to put it in writing. he will back away from his statement as he knows its illegal for him to say this.

if anyone wants the official write up about this, you can download this for your information

CLICK HERE

In the first paragraph of page 9 explains your Statutory rights
NEW LINK
Aftermarket Parts and Statute Warranties | Chip Tuning Australia
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