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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old February 14th, 2020, 03:52   #1
teadunker
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Join Date: Dec 2019
Location: UK
Default New turbo mapping question

Hi all,

I'm in the process of having some work done to my car and I'm planning to upgrade the turbo.

Currently the car has a large FMIC, a 3" decat exhaust, standard injectors, and a hybrid turbo (I don't know exactly what because it was on there when I bought the car). It has been remapped to 226bhp. It's a 1.9 of ASZ engine in an Audi A3 quattro.

I'm planning to upgrade the turbo to a GTB2260VK. At some point in the future I'll upgrade the injectors and get it remapped to take full advantage but for now I just want to do the turbo.

My question is, will it be safe to drive with the existing map on the bigger turbo? Or will it over boost or run lean and damage the engine?

Thanks
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Old February 14th, 2020, 05:07   #2
Mongler98
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Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

You cant lean out an diesel in the sense that you used. They already run crazy lean. Lean vs rich does not do what it does in a gas engine. All you get is more or less smoke and power.
You can however have too much boost that can do things like put the car into what's called a limp mode (safe default map) and throw up codes and CEL.
No real damage should occur and you should be able to adjust the actuator or put an inline boost controller (you can make them yourself) to lower the boost to prevent this for now.
Cant speak exactly to your car but my mk3 ran for years with out a tume.not very well in performance compared to with it.
You should be ok.
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Old February 16th, 2020, 11:01   #3
teadunker
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Join Date: Dec 2019
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Thanks. I'd prefer not to have to do anything with the actuator as it's a pig to get to. Could I put something in the vacuum line in a more accessible place that would restrict the boost?
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