chrisvr6t 19 Posted May 11, 2014 Report Share Posted May 11, 2014 What can cause fuel cut under boost! Basically when I hit full boost my wideband is going off the scale and it sounds like the car has a loss of fuel if I take my foot off the pedal and put into 3rd and hit boost again it will do the same thing? Could it be a faulty regulator? The blue switch on the water housing?! I have standard Intank pump feeding my bosch 044 Motorsport pump! And is only 1bar of boost Sent from my iPhone using Tapatalk Link to post Share on other sites
chrisvr6t 19 Posted May 11, 2014 Author Report Share Posted May 11, 2014 Oh and the car used to be a 8 valve lol so I'm thinking the Intank is not capable enough to feed the 044 on high boost? Sent from my iPhone using Tapatalk Link to post Share on other sites
michael5556 247 Posted May 11, 2014 Report Share Posted May 11, 2014 I would try the regulator, and put a vr6 pump in. I might even have one. Link to post Share on other sites
UnitedMotorsport 55 Posted May 11, 2014 Report Share Posted May 11, 2014 Do you have a swirl pot between the 2 pumps? Link to post Share on other sites
chrisvr6t 19 Posted May 11, 2014 Author Report Share Posted May 11, 2014 Do you have a swirl pot between the 2 pumps? no swirl pot! And this is only at 1 bar of boost Sent from my iPhone using Tapatalk Link to post Share on other sites
UnitedMotorsport 55 Posted May 11, 2014 Report Share Posted May 11, 2014 You need to monitor fuel rail pressure to diagnose this properly. At WOT rail pressure should be base(FPR) plus boost. So if you have a 3 bar FPR and run 1 bar boost, the fuel pressure should be 4 bar. Link to post Share on other sites
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