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Car jerking:help...helpp..
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<blockquote data-quote="afahmi" data-source="post: 2837004" data-attributes="member: 25561"><p>hi,</p><p>i just about to advise u to reduce the fuel pressure.i also experienced the same problem when i had "direct wiring" to my mr2 fuel pump...jerking when want to full throttle..at first i set it to 38 psi..i use this setting almost 1 year[my FC damn teruk]..and this month i went to dyno and guess wat..my car runing too rich..my a/f ratio for rpm 2.5 and above = all under 10..even the graph cannot show the a/f anymore bcoz too rich..after dyno,my pressure also same like you 30 psi..but somehow my boost has been reduce from 0.72 to 0.69..i guess the tuner bring it down a bit to get the optimum result..</p></blockquote><p></p>
[QUOTE="afahmi, post: 2837004, member: 25561"] hi, i just about to advise u to reduce the fuel pressure.i also experienced the same problem when i had "direct wiring" to my mr2 fuel pump...jerking when want to full throttle..at first i set it to 38 psi..i use this setting almost 1 year[my FC damn teruk]..and this month i went to dyno and guess wat..my car runing too rich..my a/f ratio for rpm 2.5 and above = all under 10..even the graph cannot show the a/f anymore bcoz too rich..after dyno,my pressure also same like you 30 psi..but somehow my boost has been reduce from 0.72 to 0.69..i guess the tuner bring it down a bit to get the optimum result.. [/QUOTE]
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