MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: ald1717 on February 15, 2022, 10:10:28 am

Title: rs4 return valve
Post by: ald1717 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,

Title: Re: rs4 return valve
Post by: pudding 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.

Title: Re: rs4 return valve
Post by: ald1717 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