[urq] EFI + MAC-14 maxing ataround 5k RPM
jbufkin at austin.rr.com
Wed Oct 24 06:11:56 PDT 2007
It doesnt sound like fuel to me. If the cutout occurs at 5K regardless
of load, its ignition related, A fuel cutout would be a high boost high
RPM load where the PW is higher.
You should be able to use the WB O2 and the fueling map to see if its a
certain PW# that correlates to the cutout. That is fairly simple with
standalone EFI to diagnose a fueling problem.
That being said...
You are using Audi MAC Ignition.. What wires are you using with the
stock coil and dizzy? For the interim unhook both your Knock
Sensors. I suspect something is triggering ignition problems at 5000
rpms. An ignition problem related to electronics or sensors will come
down like a hammer at a set RPM regardless of load. An ignition problem
related to bad spark under boost might be intermittent and load
dependent. Unhook the knock sensors and gently give it a spin and see
if it passes 5k.
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