Celtic Tuning are curently working on the ZF8 Gearbox tuning for the Giulia

Log into Facebook

Log into Facebook to start sharing and connecting with your friends, family, and people you know.

www.facebook.com

Alfa Romeo Giulia/Stelvio ZF8 Gearbox development begins!! So today... we have finally gained access to the controller on the ZF8 automatic transmissions for the Giulia/Stelvio 2.9 V6 Bi-turbo, 2.0 Turbo and 2.2 Multijet diesel engines. The ZF8HP50 (in the 2.2 diesel and 2.0 turbos) and the ZF8HP75 in the Quadrifoglio will both gain from torque limitation removal and increased rpm range as at ...

 

Based on their site listing currently for the Giulia 2.0 they already offer support to remove the transmission limitations and accommodate hybrid turbos. If that’s true I might switch from EC while getting a hybrid turbo made:

Celtic Giulia 2.0

We can also provide stop/start removal, decat, GPF delete, hard cut rev limiter and hybrid turbo upgrades. Alongside this, on all stages of tune, we can also tune the ZF8 automatic transmission for higher torque allowances, greater clamping pressures and faster shift speeds.

 

Looks like things are starting to move... Thanks to marcevo1

 

As anticipated- gearbox map first needed - looks like a trip to Celtic in derby will be on the cards in September (when I get the car) accumulating bits (and knowledge) first....

looks like 550 - 600nm is possible...

 

Keep us posted on how it goes. If they can do remote tuning for the hybrids I will be contacting them since I’m in the US. I haven’t seen any others who have listed the option here

 

How is the torque actually limited? Is it through timing or boost or something else? I work on Train drivelines and when the Hydro transmission requests a torque limitation its the ECM that adjusts fueling via the timing and rail actuators but this is on a Diesel engine thats 20 years old tech and not a modern Fi petrol engine.

 

Torque reading from ecu probably relies mostly on boost table. Trans TCU then relies on ecu.

 

OK thanks. So when Celtic say that the TCU is holding back the performance, is this implying that when we request a throttle position when we push the pedal, the TCU is ultimately asking for a torque output from the ECM based on a map? So in layman's terms the TCU is the master in the system? Or does the throttle request from us go to the ECM only and then the TCU deals with whatever output it gets from the engine, only limiting torque in specific situations like in 1st and 2nd gear?

I'm intrigued by the integration between the Trans and Engine in these modern drive by wire systems, purely out of curiosity not because I can use the info for any mods lol!

 

TCU and ECU work in a symbiotic relationship. The ECU supplies the torque number for the tcu.

Another example of this relationship is the rev and shift limits. The ECU has a rev limiter while the TCU has a shift point. If you tell the tcu to shift at 7k rpm and ecu has rev limiter at 5800rpm you are just going to get crazy bouncing off limiter.

Another example is the ECU prepraratory commands around shifting... remember ecu controls timing...very important around shifts. The tcu controls the actual shift though. So change the shift logic and you may want to address ecu timing around shfts too or its no longer seem less/ matched.



For tq limits, you can trick it on the ecu side or more directly you can take control of tcu and not only allow higher torque limits but also modify pressures and shift strategy to match the higher torque. This is the best way if you know what you're doing. If you don't its best to leave it alone as ive seen more zf tunes from people using hptuner kill a transmission than not. On the other hand ive seen good tunes someone made using hptuner give incredible results.

 

Did this thread die again?


Also ... maybe I'm alone in this...I bought a MY18 used, and haven't done anything to it myself...but it also does odd things like legs me red line in neutral and park...and brake boosting will take off spinning all 4...... anyway....I honestly don't notice anything different from this car above 90mph than I did in my 16 Mustang GT.

I regularly get it to 130+ on a particular stretch of highway in Buffalo.

 

Did this thread die again?


Also ... maybe I'm alone in this...I bought a MY18 used, and haven't done anything to it myself...but it also does odd things like legs me red line in neutral and park...and brake boosting will take off spinning all 4...... anyway....I honestly don't notice anything different from this car above 90mph than I did in my 16 Mustang GT.

I regularly get it to 130+ on a particular stretch of highway in Buffalo.

Measured it on Google maps, about 1 mile, starting rolling in 2nd at about 30, I dont really push past 135. It's got a bend in the road and while I have a q4 I'm also very due for new tires....lol....

 

It was dealer bought, got an extended Chrysler warranty with it. I've taken it to the dealer for a full check up and oil change recently but no change. The thing still throws out the back end if I push it

 

Hello, has anyone made any progress finding an upgrade lately? I found a company that is willing to build me a hybrid turbo and I am tempted. However I waiting to see if any other company's come out with a bolt on upgrade kit first because at least that will have been tested (I would assume)

 

Ok so check my work...

Stock turbo compressor wheels: 43/56mm
-max power on pump gas 330chp

Focus RS wheels: 50/63mm
-max power on pump around 370chp

Now maybe a company using gt2867 wheels that are: 50/67mm
-max power unknown

Perhaps they are using this...

Find quality Manufacturers, Suppliers, Exporters, Importers, Buyers, Wholesalers, Products and Trade Leads from our award-winning International Trade Site. Import & Export on alibaba.com

Find quality Manufacturers, Suppliers, Exporters, Importers, Buyers, Wholesalers, Products and Trade Leads from our award-winning International Trade Site. Import & Export on alibaba.com

app.alibaba.com

 

Now maybe a company using gt2827 (never heard of) wheels that are: 50/67mm
-max power unknown

The company I was talking with stated it was only based on a GT28 so I am not sure how much of one they actually use for the hybrid they will build. They also claim 400hp (but I doubt that if its truly a GT28). Cost is $1500 Euros + shipping for a complete unit ready to bolt on.

 

Our turbo appears to hit it's choke line around 31-32 lbs/hr which is roughly 310-320hp... So I can buy that

Looking at a map of a GT2867 that would be in peak efficiency at our current output (rather than pushed to it's choke limit) and could probably be pushed to 40-45 lbs/hr... so it would no longer be the weakest link in the system.

I suck at predicting spooling rpm though

 

These are the "stages" they offer for hybird turbos, however from what I understand they need to skip right to 3 to make it work for our cars. I suspect they are doing a custom compressor wheel to make it work

GotTuned Stage I Upgrade:

• journal bearings – so-called ‘360’
• metalworking of bearing housing
• metalworking of seal plate
• metalworking of compressor housing
• enlarged cast compressor wheel

GotTuned Stage I Premium Upgrade:

• journal bearings – so-called ‘360’
• metalworking of bearing housing
• metalworking of seal plate
• metalworking of compressor housing
• enlarged aluminum Custom Compressor Billet Wheel

GotTuned Stage II Upgrade:

• journal bearings – so-called ‘360’
• metalworking of bearing housing
• metalworking of seal plate
• metalworking of compressor housing
• enlarged cast compressor wheel
• metalworking of turbine housing
• enlarged cast turbine wheel

GotTuned Stage III Upgrade:

• journal bearings – so-called ‘360’
• metalworking of bearing housing
• metalworking of seal plate
• metalworking of compressor housing
• metalworking of turbine housing
• enlarged turbine wheel
• enlarged aluminum Custom Compressor Billet Wheel

Power is not only boost... but IT will be pleased to see somebody which will go by other way than me [emoji6]

Wysłane z mojego SM-G996B przy użyciu Tapatalka

 

Power is not only boost... but IT will be pleased to see somebody which will go by other way than me [emoji6]

Wysłane z mojego SM-G996B przy użyciu Tapatalka

Exactly low boost high flow could make much more power then a high boost low flow turbo. Its all about finding a balance. I really would love to see some easy to buy options for our cars

 

Whatever we find, I am in for getting a turbo that works.

 

Shit if its a 2867 wheel we can get china chra for a hundred bucks and take a spare turbo ($400) and get it machined. Hmmm.

 

now we’re talking.

 

@toby@eurocompulsion Rumor has it your team is working on a turbo and or intercooler upgrade. Any news on those projects??

 

Let's not get them involved.

 

Everyone is using the gtx now in the past 10 years or whatever its been but i always thought the gtx improvements are pretty much to the compressor housings so im not sure how it helps us but still very interested in your option. What is the cost?

Edit: i guess the wheels are a bit different shape so thats cool...

Full Race | Garrett GTX

Improve the efficiency with Garrett GTX turbos from Full-Race! The reliable ball bearing CHRA combined with Garrett's Gen2 aerodynamics and the form factor you know and love yields raw power with a customer experience that's second to none.

www.full-race.com

 

Have you seen the car-part.com prices on our turbos lately? ugh.

 

Sorry if this has been asked before, but how difficult is the turbo to swap? Does the engine need to be pulled like on a BMW 335i w/N54?

 

Nope, shouldn't be too bad to pull out after a lot of cursing and bloody knuckles.

 

You always could have the turbine wheel clipped to increase the flow a little

 

Yeah but then you give up response

 

JB4 isn't going to be sufficient. There are definitely things in the ecu that need to be changed so you don't get put into limp mode with the increased flow/fuel/torque

 

@kozak JB4 with that hybrid, or do you have an ECM tune?

 

Ecm tuned.

Wysłane z mojego SM-G996B przy użyciu Tapatalka

 

@Terry@BMS could make new friends.

 

Is the turbo in the Maserati Ghibli 2.0 Hybrid different?

 

I think Yes. Thats why they put electric compressor to avoid lag. This is my opinion.

Turbo in maseratti is made by BorgWagner.

Wysłane z mojego SM-G996B przy użyciu Tapatalka

 

Here is better Photo.

There is No Space to put bigger wheel.
There is 47mm , but housing of wheel is smaller

Wysłane z mojego SM-G996B przy użyciu Tapatalka

 

Whats the compressor side size look like?

On your hybrid turbo did you use the stock hot side wheel and a 2.3L RS compressor wheel?

 

We also dont know about fuel pump , injectors...

Wysłane z mojego SM-G996B przy użyciu Tapatalka

 

I would be very happy with 360-370CHP.

 

I honestly just want what @kozak has. I am not trying to be a QV, but I think what he is putting down power wise is a good balance for my needs.

 

Same here the power kozak has would be fine for me too. Having the q4 I could put the power down and it would be a fun little toy.

 

So does kozak just have the Rs compressor wheel and our stock turbine?

 

2021 Maserati Ghibli Hybrid Is the First of the Electrified Maseratis

The new hybrid sedan isn't coming to the U.S., but it will be followed by the electric GranTurismo and GranCabrio next year, which are.

www.caranddriver.com

 

might be same turbo that’s already in the 2.0. Just added electrified systems. The specs seemed pretty lack luster. 5.7-0-60 is slower than current ghibili