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A few months ago I purchased a mail order ecu remap for the big DI from Jamie down at Border Automotive Engineering and Tuning (BAET) in NSW. Have had some time with the remap in the car now and felt like sharing my experience with the remap. Going to run through as close to everything as I can, including why I chose BAET and what I've noticed since having the remap in the car. There's only 3 mentions of BAET I could find on this forum and hopefully this post can help people who are considering the BAET remap for their Patrol.

This post does contain my opinion and what I say here should not be treated as gospel, but instead should be used to help people form their own opinion.

Why BAET?

I stumbled across BAET while I was looking for a remapping service for my patrol. The ZD30 DI's are not renowned for being fast in their stock form and the blanking of the EGR brings about that dreaded thing called limp mode. Tillix/Dawes and Needle valve combos are the most common solutions for limp mode and can reap some performance gains. Personally I have played around with two different needle valves on my ZD and although there was some performance gain, dialing them in was tedious and an incline or a highway on ramp would still cause some mild anxiety.

The ZD30 DI ECU is notoriously difficult to remap and as a result there are only a few businesses around that offer remapping services. BAET was one of those businesses that I found in my search. The reviews on the website are glowing and although these could be manipulated in some way, I thought it unlikely due to the volume of reviews on the website. Another factor in my decision to go with BAET was the cost, they came in hundreds of dollars cheaper than the competition. Primarily due to them not having a dedicated in house dyno. I sent a couple of emails to Jamie, just wanted to find out some more information, and he was incredibly helpful and informative.

Although, dyno tuning would obviously yield better results, a mail order remap is significantly cheaper and not far behind the in terms of performance. If I was changing turbo and deviating from the stock intercooler configuration I would definitely opt for the dyno tune, but with a relatively stock motor the remap would be perfect.

The Purchase

The entire process was seamless. There is a send in service where you send your ecu, it gets remapped and sent back to you. I opted for the loaner ecu service as the patrol is a primary mode of transportation for me and putting the car out of action for a week was not really an option. I received the loaner ecu (Stock ecu without NADS) and sent my ecu off. When it returned I simply swapped out the loaner ecu and we were good to go. You receive instructions on how to remove and reinstall the ecu with your purchase and it only takes about 10 minutes, mainly because the mounting bolts can be a pain to get to. Definitely disconnect the battery for a few hours before so there is no residual charge in the ecu. From purchasing through the BAET website to having my ECU back in the car took about a week and cost $700. That is including shipping to the Sunshine Coast from NSW. The send in service is roughly $150 cheaper.

The Drive

This is the important bit, the bit I know those who have read this far have been waiting for. I had planned to collect some quantitative data to compare but foolishly deleted my 0-60 and 0-100 times on the ECU talk without writing them down. So all that you have to go by is my word.

The thing hammers. It is by no means a rocket ship, but it is night and day to what is was before. As most know 1st and 2nd in a patrol a quite short and from a standing start it eats those first gears, but by 3rd it's pulling hard and I'm giggling like a schoolgirl. I'm only running a dawes valve so the spool up is not as aggressive as it could be with a needle valve, but in 3rd it's making 6-10 psi by 2000 and 12-16psi by 2500 with max boost being around 18psi somewhere past 3000. On the highway I can hold a 100 with <20% throttle, overtaking is a breeze and it will pretty comfortably hold 100 up most inclines. On the beach is where the performance gain is the most noticeable. A section of soft sand no longer means banging it back a gear and wringing the poor things neck, instead a gentle squeeze of the throttle gave me all the power and torque I needed to hold my momentum. My partner loves driving it now and her dad, who formally owned a 230hp 900+nm TD, remarked at how smooth the power delivery was.

Outside of the performance gain I have noticed a number of other changes.

The most major change is fuel economy; on my last tank I averaged 12.1L/100km, this was about 60/40 highway to city driving and by my rough estimates the highway driving was almost 10l/100km. The around town fuel economy is not significantly better but I do find myself going longer between trips to the servo.

EGTs are another noticeable change. Mainly that they will climb a lot quicker than before, this is not unexpected due to all the additional fuel. On the highway it will sit between 340c and 380c, that being said on an incline I can hold it to ~400c while maintaining 100kph. Previously on the beach getting it near 500c was a challenge, it's now not afraid to get past that 500c mark and I did see it spike to 550c in particularly soft sections. This is only on soft sand. On hard packed sand egt's were only marginally higher than on road. A needle valve would most likely lower these numbers, but I am not overly concerned with the temps, just requires a little additional monitoring on my behalf.

Oh and it soots now too. Not really something major just something to be aware of.


Congratulations for getting this far, I hope that you have learnt something from this rather long post. Happy to answer any questions people may have.

RED484
 

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Y2KGUII ZD Wgn
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Good read. My first remap way back when first available was done by Harley from ECPT, it was a mail order and like you the difference was amazing, after fitting a bigger turbo a couple of years ago I had to change injectors because they were slowly dying, so I went plus 50%. Tuners have been dropping out of DI remaps for quite a few years because of the difficulties and I knew quite a few of them personally.

One issue is finding a balance between bottom end, middle and high range, totally different to the CRD. I had mine done the second time on the dyno by a guy I had known for many years, I was looking over his shoulder while he had it on the computer and I could see first hand the difficulties he was having finding the balance, alter one section and a bit of it flows through to another, and so on and so forth, so it doesn't surprise me that many tuners dropped out, can be very time consuming, especially if the engine is outside the normal mods.

Mine goes like the proverbial, it idles quite rich and soots if I stand on it but that does not seem to be an issue. My EGT is very good but like any manual ZD30 if you load it up in 5th gear it will climb, but it is easy to control. I have just returned from a 1900k trip through the mountains of North West NSW and a lot of 4WDriving on a large cattle/sheep property, never saw an eng temp over 89c, never saw an EGT over 450c and achieved 11.4L/100k overall for the trip.

I had not heard of BAET before, so it is good to have another name in the mix, Currently there is only one I would recommend to any DI owner, but, as you would know tuners didn't drop out for no reason, it takes dedication to stay in the DI remap business.

Thanks for posting. Seeing as this is the Build Thread Section I hope you will add to this with other mods with pics as you go.
 

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Nissan Patrol Y-61
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In order to change the firmware, you need to know where and what lies, what needs to be changed and what cannot be, you need to decrypt the cards, this is the whole difficulty, there is still a problem how to remove the work from the cards, no one can do it do. We learned how to cut out the immobilizer, but we cannot remove the EGR.
 

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2003 ZD30 Di Patrol (The rare Gold one)
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In order to change the firmware, you need to know where and what lies, what needs to be changed and what cannot be, you need to decrypt the cards, this is the whole difficulty, there is still a problem how to remove the work from the cards, no one can do it do. We learned how to cut out the immobilizer, but we cannot remove the EGR.
Working out the maps isn't very hard for someone that can read ECU maps. It just takes a while. It didn't take Harley and I very long to work out the immobiliser. We were both working on the same theory as used in some Fords. Just had to identify the correct chip. We had a even chance of stuffing it up first go which is what happened. 2nd attempt worked as we planned. :)
"Removing the EGR" is probably the easiest part of the remap process. Go into the EGR map that specifies temperature of operation and change the parameters of when EGR is allowed to function. We change is to not operate unless the water temperature is below -30c. Simple for us. You should probably use -50c or -60c. haha.
 

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Nissan Patrol Y-61
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Working out the maps isn't very hard for someone that can read ECU maps. It just takes a while. It didn't take Harley and I very long to work out the immobiliser. We were both working on the same theory as used in some Fords. Just had to identify the correct chip. We had a even chance of stuffing it up first go which is what happened. 2nd attempt worked as we planned. :)
"Removing the EGR" is probably the easiest part of the remap process. Go into the EGR map that specifies temperature of operation and change the parameters of when EGR is allowed to function. We change is to not operate unless the water temperature is below -30c. Simple for us. You should probably use -50c or -60c. haha.
[/ЦИТИРОВАТЬ]
Could you give me the block and the address where the temperature is? we will try to change.
We are new to this business)) The main problem is decoding where and what lies, we do not have this.
Also, if you can find and change the glow plug turn off temperature, I checked and saw that the glow plugs turn off at about 70 degrees, I think 40 degrees will be enough.
 
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