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Author Topic: rs4 return valve  (Read 676 times)

Offline ald1717

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rs4 return valve
« on: February 15, 2022, 10:10:28 am »
will this effect fueling at all? i know it increases rail pressure by 5 bar, but could it cause a higher fuel usage and rich condition, or is it like i assume that you are getting the same fueling just at a slightly higher pressure,
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Offline pudding

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Re: rs4 return valve
« Reply #1 on: February 15, 2022, 03:24:09 pm »
Nope.

Things that cause over rich fuelling are: Bad MAF, bad O2 sensor, knackered coils, knackered plugs, crap map etc etc.
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Offline ald1717

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Re: rs4 return valve
« Reply #2 on: February 15, 2022, 05:01:41 pm »
thats good i sorta guessed that as ive done 1000 miles on it and car was running great, i have ordered new bosch coils and plugs, as thats where my best guess is at, will update when fitted on friday
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