[geeyoutoo]

So when you say maps have been changed do you mean they have raised the threshold? ie taken the usual 3.98v under 3 grand threshold up to a higher level? can this be done in multiple zones and is it stepless?

Yes. That is what you can do.

So which is it? one of the above or all of the above?

 

[skegbudley]

It can be done right throughout the rev range. Should be seemless.

Sent from my SM-G900I using Tapatalk

 

[geeyoutoo]

I've just had a long conversation with the technical guy down there at East Coast performance, they are only a few K's away from my home town. We swapped email address so we can stay in touch and look at their developments as they happen.

Yes the limp zones are controlled but not by raising the threshold, it's done by making the unit look somewhere else for it's info. They are in early days so there is still a lot more work and study of the various ECU brands/Models the DI used in its lifecycle. They are going back on the dyno in a week or so, that vehicle did have 35's on it so it's not indicative of what we would normally see from a run. But a 13% improvement in Kw isn't too bad, the 26% improvement in torque and the revs it came in at is quite significant, that was at around 1800rpm judging it by my reckoning on my tacho, mine is closer to 2000rpm. BTW I asked what gear the run was done in (not mentioned on the dyno sheet) and it was 4th.

The limitations are really with the VP44 and it's variants, the AFR was high but being looked at for the future.

So my original question when I started this thread may be closer to an answer, could be what we were waiting for, sounded promising anyway, no reluctance to answer questions like others I've contacted. Lets see.

 

[Navowner]

The capacity of the spill valve in the vp44 would be the ultimate limit of how much power you could make I think. I also once read that bosch don't recommend a spill valve duty cycle above 55% as the pump uses more fuel than it recirculates, which would affect cooling / lubrication. That was off another forum thou so I don't know if it's true.

 

[mk96]

But that can be easily fixed by adding a fuel cooler.

 

[Honzak]

The many times discussed limp zones for certain RPM vs MAF voltage don't exist after raised requested boost, injected fuel quantity tables and limiters. The maps i posted in my mappack earlier.
Look at my log in the attachment and tell me your opininon if i should experience limp with this values.
Because i have changed things above for at least 2 or 2 1/2 years and since i replaced faulty MAF (1 1/2 or 2 years back) i never had limp again.
https://www.dropbox.com/s/puuk8in4r0p7vnx/NDSI20160130_183809.log?dl=0

 

[geeyoutoo]

The capacity of the spill valve in the vp44 would be the ultimate limit of how much power you could make I think. I also once read that bosch don't recommend a spill valve duty cycle above 55% as the pump uses more fuel than it recirculates, which would affect cooling / lubrication. That was off another forum thou so I don't know if it's true.

I don't think we are talking vast amounts in change when you consider the amount being returned to the tank, I know on mine the flow rate is 1L/min at idle and 1.9L/min at 2000, so there is a huge return volume, mine will recirc a full 95L main tank in just over 40 min, I did a lot of testing on this when I fitted my fuel cooler etc.

The many times discussed limp zones for certain RPM vs MAF voltage don't exist after raised requested boost, injected fuel quantity tables and limiters. The maps i posted in my mappack earlier.
Look at my log in the attachment and tell me your opininon if i should experience limp with this values.
Because i have changed things above for at least 2 or 2 1/2 years and since i replaced faulty MAF (1 1/2 or 2 years back) i never had limp again.
https://www.dropbox.com/s/puuk8in4r0p7vnx/NDSI20160130_183809.log?dl=0

Thanks for that, your v at 2500 and 3000 is slightly above what my ecu will accept but your 3500 is very similar.

I should reconnect mine to the laptop and get current readings, haven't done that for years.

 

[stripey]

RomRaider • View forum - Nissan

few good threads in there that may help.. its all open source so all info is shared and people are willing to help. there is a tool on there to gain access to ecu via obd2 - kline has not been tested yet on a zd30 ecu.

but just putting it out there

 

[geeyoutoo]

Had forgotten this thread. It was going to be this week but I need the truck Saturday so next week mine comes out and goes down to Harley, after months of discussion with him I'm happy enough to go ahead with a basic tune and limp zone reset, I' can do a lot of mix and match with the gear I have (DTronic and Jaycar unit). Two friends have there's either in or coming soon, the one that got it the other day is very happy with torque improvement and that is what I'm after.

I also had to do something about my under 2500 limp zone, when I do a mod that one seems to come back and if I clip it anymore I'm only losing out, when my inlet manifold is done that will change things again so easier to get them reset.

 

[skegbudley]

Ive had mine done for a few weeks now and im still impressed.
Low down torque is excellent. Throttle response has improved.
Overall is much much nicer to drive.
No limp mode at all either.
It's easily 1.5 seconds faster to 60kph than my last +24 JVDM map. JVDM has been reset to zero for the time being.
AFRs are nice and lean apart from when you mash the throttle at the lights.
As soon as boost comes on it sits on around 19:1 - 20:1 under full throttle. Will be doing data logging on Sunday as well as playing with the JVDM.
Will be playing with the ECU tune itself as soon as I get back from WA.
Harley at East Coast Performance Tuning has done a bloody good job so far.

 

[stripey]

i would have been up on all this stuff and probably be playing around with it myself if i had not sold my patrol 18 months ago. worst decision, i thought i wanted a fast sports car how wrong was i so im buying it back with a new turbo and ill be able to play around with maps and such

 

[Navowner]

It's good to see this become a viable option for us orphans of the tuning world.
How'd you go with the immobilizer skeg, all sorted?

 

[skegbudley]

It's good to see this become a viable option for us orphans of the tuning world.
How'd you go with the immobilizer skeg, all sorted?

Nah. NATS is still a work in progress.
Will be getting back into it again soon once I get back from my current round of traveling for work.

 

[geeyoutoo]

Mines finished and on its way home according to Dave. Need to get my arse into gear on my rewire project......

 

[guderiancol]

It will awesome if they will sell tuned ecus overseas

 

[geeyoutoo]

It will awesome if they will sell tuned ecus overseas

I can make inquiries for you with Harley and David, I know there was a company in the UK that was offering remaps a few years ago but when I contacted them there was one part they couldn't do (can't remember now what it was) so I didn't pursue it any further, then early last year I heard of these guy's and started talking to them, then waited for them to get a few under their belt. If need be I'll be the middle man if they don't send out (I've known you long enough ), I'm sure we can work something out, your problem would be the extended downtime.

Hope to have mine back tomorrow sometime, will write it up in build thread.

 

[mickyg]

Have recently completed at 1500km return trip towing the CT from Sydney to Ballina and back.

The trip started with catching up with Harley at ECPT to have the ECU chips replaced after a software bug caused limp mode and some other small issues at idle. Chips were replaced and everything was working as it should.

Driving from Tuggerah to Grafton I averaged 12.2 LPH sitting on 105km/h. This was towing in 5th where I could except for a few larger hills, this is the best economy I have ever had towing (Average is 13.5LPH, all previous towing has been in 4th Gear and between 90-95 kmh for economy reasons) and almost the best outright not towing which was high 11’s. I am yet to calculate the return trip LPH but it will be slightly higher as I went a different route.

Throughout the trip EGT’s have been similar to previous under low and medium load conditions. During heavy load conditions the EGT’s rise much faster and possibly higher (Prior to remap would struggle to hit 500c whereas now I think I could push it well over 600c if not backing off).

The main improvement has been in low down torque & Power, many situations where I would need to drop a gear to maintain speed / accelerate I can now hold that particular gear and accelerate if necessary. Have not noticed a lot of soot during heavy acceleration but off boost. (Revving at idle will produce a nice cloud of black smoke whereas previously there would be nothing).

Am still undecided whether I will re-connect my D-Tronic. As I have a UAFC and GP timer wired into the loom. If I am happy with the Remap I will wire in the GP timer on the factory harness and ditch the D-Tronic all together.

 

[geeyoutoo]

Mines in and running as well, only a few K's on it so far so no long term report but torque improvement down low is significant. I did several time trials to compare to past tests and they were very good, after that I rigged the DTronic up again and time trials indicate no change in performance so all my DTronic loom wiring can stay in place. It is so good to power through previous limp zones. Have written up in more detail my build thread.

Like MickyG I'm very happy.

 

[mickyg]

Someone was asking the other day if there was any smoke since the remap. Have not had the time to get the gopro out and go for a spin and check whilst driving.

So took a quick video this afternoon.

http://vid46.photobucket.com/albums/f128/m_gardner_/P4X4/GUPATRL_zpsuljrnarm.mp4

 

[skegbudley]

If you gas it without boost you will blow a bit of soot. Runs clean as once on boost