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Timing/hpfp/lpfp

C

CraiMart

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#1
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Location
Chimayo, NM, USA
#1
So took the car for a dump tuner nearby today to help with my timing issue. He thinks that it is the hpfp or possibly the lpfp. He says that once the car hits 6,000 rpm the fuel pressure drops. It’s demanding 2100 psi but drops to 1700 psi. My question is, how should I move forward? How do I figure out wich pump it is? All I have is a Cobb access port. I have a tactrix dongle also but have no idea how to use it.
Thanks everyone!
 


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