Rb25/30 Acting Like Running Out Of Fuel

[hibooster]

Hi guys,

To cut to the chase ive had this car for over 15 yrs now 94 R33 GTST. It is modified to support 500hp on e85. A few months ago now we were cleaning up the maps in the vipec ecu when the car started to act as if it had no/low fuel. So switching it back to 98 ron it picked up again and was sucessfully mapped on the dyno. However when taken on a road test it started to do the same thing. So like anyone would we replace fuel filter and fuel pump and to our surprise nothing changed. My friend is a proficient tunner and for months now the solution to our problem has eluded both of us. At witts end and cant figure out what is happening to my car. Any ideas ?? Injectors are all flowing fine.

Edited April 6, 2016 by hibooster

[mr skidz]

Is the engine breathing heavy from

Blow-by?

Have you pulled a breather hose off?

Edited April 6, 2016 by mr skidz

[tridentt150v]

Have you measured your fuel pressure?

[hibooster]

No we havent checked that i did notice that it was blowing the hose from the intake side of the tappett cover but didnt think anything of it. It also just had an oil catch can fitted with a breather on it. Im not sure what fuel pressure its running at.

Edited April 6, 2016 by hibooster

[XKLABA]

What about the basket filters in the actual injectors ?

[hibooster]

They were recently flow tested but could be blocked again

[KiwiRS4T]

They were recently flow tested but could be blocked again

If you still have the old filter cut it open to see if its full of crud. E85 has the effect of cleaning out the tank and although you should be fine now some stuff may have got through to the injectors.

[hibooster]

No worries ill check it out

[hibooster]

If anyone thinks of anything else let me know plz