Tuning i20N Engine & ECU Tuning Discussion

[Cardinalsin]

Yeah, I hear you about the aftermarket parts, but honestly, I was always gonna do it anyway because I love working on things and buying parts gives me the excuse I need. A lot of my mods have been suspension items which have definitely improved the car. Also, as I've done all the work this far myself, I've gotten to know this thing pretty well along the way, which is never a bad thing.

I would be into fitting modified parts too if they made real gains. Like you, I enjoy modifying cars. I like the way it goes, sounds and stops but I do think the shocks are crap and will definitely be looking to fitting some struts in the future. If you have a link to the suspension mods on your car I would be very interested to see what you fitted and the results.
I drive my i30N sedan with the suspension set on the softest in N custom 99% of the time, going to full N sometimes. The difference in compliance on crappy surfaces is marked and I want the i20N to ride like the i30N because there is no penalty in handling except for a slightly better turn in, pushing it.

 

[Zealot]

I would be into fitting modified parts too if they made real gains. Like you, I enjoy modifying cars. I like the way it goes, sounds and stops but I do think the shocks are crap and will definitely be looking to fitting some struts in the future. If you have a link to the suspension mods on your car I would be very interested to see what you fitted and the results.
I drive my i30N sedan with the suspension set on the softest in N custom 99% of the time, going to full N sometimes. The difference in compliance on crappy surfaces is marked and I want the i20N to ride like the i30N because there is no penalty in handling except for a slightly better turn in, pushing it.

All the mods that I've done are listed in my car thread here.

 

[Cardinalsin]

All the mods that I've done are listed in my car thread here.

I thought I spent a lot of time and money on my 2016 MX-5 to make it go and handle better but it was nothing compared to the amount of work you've put in on your i20N. I'm surprised you still have the stock shocks. I think they should make a big difference to the quality of the ride because they are so harsh and uncompliant. The ride is better in my i30N on the firmest setting than my i20N.

 

[Zealot]

I thought I spent a lot of time and money on my 2016 MX-5 to make it go and handle better but it was nothing compared to the amount of work you've put in on your i20N. I'm surprised you still have the stock shocks. I think they should make a big difference to the quality of the ride because they are so harsh and uncompliant. The ride is better in my i30N on the firmest setting than my i20N.

Yep, I want to get some B6's but they're not available in Australia yet.

 

[YNWaN]

B6 shocks for the i20N are available in the U.K. but the price for all four is £1000.00 and KW coilovers are £1,800.00. However, I don’t find an issue with the standard shocks. In particular, changing the wheels to lighter designs and slightly increasing the tyre wall size have made the ride significantly less ‘crashy’ whilst maintaining body control.

 

[i_twenty_N]

I hope so too, as the OEM alloys are so heavy, the suspension is overchallenged controlling these heavy rotating masses. In Germany I guess the B6 are a lot cheaper, over the years I several paid about 450-550€ for the grp ones for the Saxo.

 

[Cardinalsin]

I hope so too, as the OEM alloys are so heavy, the suspension is overchallenged controlling these heavy rotating masses. In Germany I guess the B6 are a lot cheaper, over the years I several paid about 450-550€ for the grp ones for the Saxo.

What do the wheels weigh?

 

[Spilner]

What do the wheels weigh?

11.4kg (ish) for OEM

 

[T0m_i20N]

That's disappointing knowing that the turbo can hold boost at the top end and is better than expected.

Perhaps they have limits to what they can control and that's why their results are limited?

Hi, let me add to this (a bit late) and for reference for @Zealot

Cherry have reported they're struggling to find a map that limits boost in the upper rev range, as soon as the car hits 4k rpm they're finding something is holding the turbo back, you can find their comment om the topic made in february on MHHAUTO where tristan had posted this:

"

I'm in the same boat, having logged the car extensively with VehiCAL, I'm convinced there is a mass airflow limiter being imposed on the car. The really frustrating thing is that it only happens on the i20N version of the CPEGD3 - the other versions can run 20psi on the standard turbo even at 6,000rpm.
I've been told that a tuner in Germany has been able to patch the ECU ROM to bypass the airflow limiter, and that leads me to believe that it's been hard-coded into the ECU rather than being linked to a calibration map. I've got the DAMOS and I've gone through every single air flow limiter value, and there's nothing even remotely close to the value that I'm looking for.
I've resigned myself to learning Ghidra and IDA Pro to disassemble the ECU ROM to find the bloody air limiter... Hopefully I find it soon, making only 13psi at 7k RPM with a ball-bearing upgraded G25 turbo is frustrating me beyond belief!
That all said, you shouldn't be limited to 20psi peak boost, as there is some modifiable maps that allow for an increased charge demand (so long as the above-mentioned airflow limiter hasn't been reached) - I've been able to get 25psi through the midrange, but boost always starts to turn down around 4500rpm and consistently trends downwards towards redline from the mass air limit."​

 

[Zealot]

@T0m_i20N thanks for posting that. It makes sense when read in conjunction with the recent response I received from @YNWaN 's tuner, Jon Shields of Courtenay Sport, when I reached out to them to see if they knew anyone in this part of the world who could offer similar results to them. His response is below.

Hello Ian, I’m pleased you noticed how we manage to hold the power right through into the upper rev range. This came as a result of having done the Hybrid turbo development whereby we had to locate and find all the upper torque / power limitations the Hyundai set. This took a very long time. Our development car has over 230 plus run’s on the dyno now.

We can see by others graphs both here and abroad that many haven’t found these, so they are spiking to torque to get a bhp number then the graph goes flat, and it looks and drive like a diesel. Unfortunately, we don’t have any other dealers, I’m really sorry..

The only tuner I've so far found in Australia that claims to offer tunes with somewhat similar results to Courtenay, is Tunehouse in Marrickville.

I've never dealt with them or Cherry Tuning and since they're both a 12 hour drive away, I'd need to be certain I was getting the real deal and not half a tune.

I've spoken to one other, Performance Tuning Brisbane, who have been posted here before. Based on the conversation, I have no reason to believe they have fully unlocked the ECU code as yet.

 

[malimajk]

I've spoken to them and they sent me a sheet. Their peak figures are good but they fall away after 5k rpm to basically no better than stock at peak revs. Not sure if that's the best they can offer but that's all they've provided me thus far.

Could you share the sheet? Can't find any online

 

[Zealot]

Could you share the sheet? Can't find any online

 

[malimajk]

Yeah, Courtenay looks a lot nicer and linear

 

[Zealot]

Yeah, Courtenay looks a lot nicer and linear

Courtenay's description of what others are doing fits the Cherry chart very well.

 

[YNWaN]

These are the dyno tests of my car that Courtenay Sport tuned. The bottom trace is standard, the middle is with the DTUK tuning box and the top is with their tune applied.

 

[YNWaN]

@T0m_i20N thanks for posting that. It makes sense when read in conjunction with the recent response I received from @YNWaN 's tuner, Jon Shields of Courtenay Sport, when I reached out to them to see if they knew anyone in this part of the world who could offer similar results to them. His response is below.



The only tuner I've so far found in Australia that claims to offer tunes with somewhat similar results to Courtenay, is Tunehouse in Marrickville.

I've never dealt with them or Cherry Tuning and since they're both a 12 hour drive away, I'd need to be certain I was getting the real deal and not half a tune.

I've spoken to one other, Performance Tuning Brisbane, who have been posted here before. Based on the conversation, I have no reason to believe they have fully unlocked the ECU code as yet.

I’m glad you managed to speak to Jon as he is very open and frank about the state of tune. The advantage Courtenay Sport have is that they own their own i20N and that has allowed very many more dyno runs as a lot of experimentation has been needed. This experimentation is required because the ECU is in no way fully ‘cracked’. Yes it is now possible to access the software on the ECU but it’s not all laid out in nice neat labelled sections - far from it. This is how the situation has been explained to me.

 

[Zealot]

@YNWaN as I understand it, Cherry has their own car also, but of course, I don't know how much time they've put into it to date. Based on the comment they apparently posted on MHHAuto, they do seem determined to get to the bottom of it. I hope they do and soon because I'm certainly not spending any money until I'm getting the full Monty.

@T0m_i20N can you please provide a link to the thread on MHHAuto where the comment you posted above was found? Thanks.

 

[frenchy2475]

As YNWaN says this ECU is far from being fully open. There is another tuner in Germany MT tuning which is also getting good numbers on pretty much stock cars. I would say Klasen-motors/Courtenay, MT Tuning are the
best I have seen as far as smooth maps and good figures.

 

[T0m_i20N]

@YNWaN as I understand it, Cherry has their own car also, but of course, I don't know how much time they've put into it to date. Based on the comment they apparently posted on MHHAuto, they do seem determined to get to the bottom of it. I hope they do and soon because I'm certainly not spending any money until I'm getting the full Monty.

@T0m_i20N can you please provide a link to the thread on MHHAuto where the comment you posted above was found? Thanks.

Hi,

Sorry should've included that in the first place:

https://mhhauto.com/Thread-Hyundai-i20N-1-6t-GDI-CPEGD3-20-1-Boost-limiter-help

Thanks

 

[absorb]

@T0m_i20N thanks for posting that. It makes sense when read in conjunction with the recent response I received from @YNWaN 's tuner, Jon Shields of Courtenay Sport, when I reached out to them to see if they knew anyone in this part of the world who could offer similar results to them. His response is below.



The only tuner I've so far found in Australia that claims to offer tunes with somewhat similar results to Courtenay, is Tunehouse in Marrickville.

I've never dealt with them or Cherry Tuning and since they're both a 12 hour drive away, I'd need to be certain I was getting the real deal and not half a tune.

I've spoken to one other, Performance Tuning Brisbane, who have been posted here before. Based on the conversation, I have no reason to believe they have fully unlocked the ECU code as yet.

Have you had any further luck with this?

I'm also in QLD, so a trip to Cherry is not really something I want to do if they aren't really getting the gains we'd expect.

In reality, I'd be happy with an ECU flash like what Mountune offer on the Fords, but haven't seen anything like that either. Racechip seems like a bit of a bodge job.....