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Audi S4 TQ Sedan 1994 Engine code AAN 2.2T Gearbox 6spd manual Fuel used: Petrol 98oct (Euro) Vems PnP box, number 10667. Firmware 1.2.31 Vemstune 1.5.57 installed on laptop __________________________________________________ Mods: GT2871R turbo Bosch 044 intank fuelpump Bosch 550cc inj Bosch NTC MAT-sensor Large FMIC MAF delete Coil conversion harness and 1.8T coils. 034 High flow RS2 exhaust manifold 3" custom stainless exhaust turboback. 034 phenolic spacer for intake manifold 034 MLS headgasket ARP head studs ___________________________________________________ Bottom end untouched. ___________________________________________________ Trigger info: Using the original 135 teeth trigger system. However, the colours on my cables at the crank home sensor connector were opposite of what the info states. The cables seemed to have been switched earlier, but they were not. So in my case, red is purple, and purple is red. With the cables untouched, the "TDC after the trigger" was 43, and many trigger errors. With the cables switched, the "TDC after the trigger" was (is) 55, and no trigger errors. When checked with strobe timing light. So just looking at the wire colours is risky. __________________________________________ _______________ I am in the middle of fine tuning the maps. (Dec 2022) Car drives fine. _____________________________________________________________
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