Did you try the wastegate arm ?

 

Affirm, the arm, DV, actuator and pressure sensor replaced.
We finally found that the wastegate was bad, because the “nipple” where the arm attaches to , if you move it by hand, you can feel the WG itself not moving smooth, with excessive play compared with an other giulia turbo that the shop had there.

 

I know a lot of people that get the 200hp version say it's just a tune difference for the power wise. No hard proof but considering this it should be the same. Also the 952 is the code for the 280 version.

 

Yes, that was the info I’ve always read “200 and 280 are essentially the same”. My shop told me that they are not 100%, after doing a swap on a customer with broken 200hp engine.

And with that info, and after looking into Garrett catalogue, the confidence on spending almost 1000€ on the best looking ad on ebay has gone.
Because as you say 949 ( Stelvio ) and 952 ( Giulia ) should be and ok to go, but the “GME 2.0T 272hp” never existed, apart from Jeep, and that is a bit disappointing.

According to Garrett:

• 877436-0001 => This is my turbo now ( only appears for 280hp )
• 871794-5008S => New reference for 280hp

Both GT2056KSZ turbocharger.

- 877321-5007S => From ebay vendor, MGT2056Z part number, for “Chrysler 949-952 272hp” and “Giulia 200hp, with GT2056KSZ”

Maybe it’s my impression, but I think it is either very clear and confusing 😅

 

AFAIK this was what I knew, both 200 and 280, had the same engine ( ecu tune, oil cooler apart ), but I've also read in this forum I think, that 280 ( EU Euro6D ) had a bigger turbo, which would be in line with the different part numbers.

Let me show you the investigation results from Garrett catalogue website, I've made these days before posting:

• This for my actual turbocharger ( last revised version, but main number is the same ) if you look for it directly - LINK 1
• This is when you look for car brand/model - LINK 2
• This one is the eBay seller part number where appears the "non existing" power range - LINK 3

Totally agree not to trust the vendors, that was the reason of the research and almost becoming crazy hahaha. Let me also attach the eBay add you can see looks very trustworthy. - EBAY

I also planned ( depending on the cost ) to buy a hybrid one, even though I'm not planning doing most than a basic stage 1 to get over the 300 number, with the oem turbo.

 

I've also contacted some official vendors, and only one has investigated so he told me that the core ( compressor, etc ) are different between mine and the ebay one. So I think I have only he option of a used one or the extortion from Alfa with a new one.