Hello. Iam new here. My name eyal, i got s4 1992, in stock condition! Ihave changed fuel pump , to a walbro 400. And i bought from ulteimut mapped cheps. The car runs very well, but when i pass 1.0 bar, iam hearing detunation. When i fill up the fuel 98, thr detunation stops. But i still fell that i have a lean fuel ratio. I bought new injectors 440cc , but i still didnt instolled them. Here comes the questions: 1. When ill instoll the ijectors, do i have to contact with ultimut, so they will send me new cheps with new maps? How many efective boost can i take out from the k24 7000 ? 3. How much boost can hold the stock blow of valve?.4. How refrence make the tfsi coils? The car is in very good shape! Thank you.
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and there are many clever guys on here to help with your tuning.
Don't forget we need car pictures
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You will want to use 98 octane fuel to get the best out of the car, especially if the Ultimot chips were mapped for it. Motronic has knock sensors so should pull timing, unless the knock routine has been modified or disabled.
The injectors and ecu software need to match, so if you want to install 440s you will need new chips.
Max boost on a stock k24 7000 is normally 21 psi peak, tapering to about 14 psi at redline.
The stock turbo is maxxed out so no point in fitting bigger injectors.
Stock DV is fine.
There are threads on here for the TFSI coil conversion.Current-2004 Impreza PPP wagon
Sold-92 3B coupe-RS2+, 996s, konis, rear torsen, forged rods........
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