Hi Guys could someone please assist I have a Astra H I am playing around with. The Cat is removed boost upped to 1.5 bar (dump valve actuator changed told by previous owner) Maps still stock. any help will be appreciated I have a stage one tune file not sure if I will have to redo immo coding if I load this dump. Thanks
geeroam (27th July, 2018)
Thank you will the increase boost need any additional parameters changed?
geeroam (17th August, 2018)
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