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Tfsi Mikes Money Pit :: AKS built Cupra :: TTE420 :: Rtech Tuned

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graeme:
i dont understand how the n75 valve causes a misfire at idle ... the ecu wouldnt even be asking for any boost so the turbo would be sitting below atmospheric pressure ? if the n75 was broken it would obviosly make the turbo impossible to controll giving the call full boost all the time ? no? im confused by this . . .

Richn83:
his missfire isnt at idle you can see in the graph above it occurs just after maximum boost.

Tfsi_Mike:

Initially basic measuring was counting a missfire at idle.

As it's got worse (when I logged it) it misses through the rev range

John suggested he had a rough idle and missfire so for the sake of €25 euros it won't hurt to renew the N75

Tfsi_Mike:

Whipped MAF out to have alook.  Plug connections look fine no corrosion etc after all the jet washing.

However there was a fair bit of resudue on the body & inside the sensor itself











E30Dom:
What filter you running?

Took my airbox off yesterday to fit ITG filter and my maf was spotless...?

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