i put my fuel presure gauge in today and i dont know what I think, had a question hope you guys can answer.. I dont know if this is normal or maybe its part of my problem but the fuel presure goes down at higher RPM's, the presure at idle is around 95 psi and it falls to about 60 psi at around 5500 6000 rpm's.. whats the deal.. thought it should be constant

 

fuel delivery mate no point fitting an adjustable FSR and not getting a performance fuel pump and filter, then there's the injectors to take the load

 

ok im a little slow this morning drank alot last night, so what your saying is what exactly.. stock fuel presure is 4 bar and i have not read about anyone with a ko4 need a High performance fuel pump.. mine is brand new, and my filter is as well.. i have new injectors 310 cc, but i just dont know if this is normal or something is wrong, if something is wrong i think its my AFPR

 

good evening and that's exactly what im saying, delivery/ air induction/ chipping and the list goes on, if they are not matched then you will feel the lose normally this is done by the chipper/sparky on the rolling road to adjust the max performance but you need the parts to compliment the results

 

i hope you know what he's saying cause I sure as hell dont

 

im still lost, so i gather this is not normal and something is wrong.. what exactly i dont know

 

glad someone else is confused becasue i thought i was just still drunk..

 

consider this then, you have a fuel tank and a 5-6 bar fuel pump max and you upgrade the engine parts ( are you with me so far ??? ) now the engine sounds raunchy but dies at sat 4k rpm ( why ) now think about it before you answer

 

i understand what your trying to say, i think / lol but as far as i know im not breaching the limitations of the stock fuel system you said it your self that the stock fuel pump is good to 5-6 bar, and most big turbo kids or even the pc-16 file only calls for 3 bar and biger injectors.. this problem im having just stared a few weeks ago and it ran fine for a long time, and i have not read of anyone with my ko4 program ever upgrading the fuel pump

 

there is a saying ( demand out stripes the supply ) worth noting the Ko4 is very demanding