So I am trying to understand why I would be out of fuel (seeing 103% idc) on my current setup (see sig) while only making 430whp and 365wtq on a dynojet. I have seen plenty of others make it to 450 and some higher on the same fueling setup as I am running. Now I guess what I really want to know is if how my tuner configured the tune could skew the idc readings that ecuflash shows.

 

What makes you think your at 103% duty cycle?

Are you logging in evoscan? if so be sure the fuel injector size in the right corner is set to the same size as it is in your rom. Would be very rare (read unsafe) for a tuner to be pushing your injectors to 103%, more likely its logging wrong.

 

Check for boost leaks, and also pull the walbro out and make sure it is modded.

 

While doing the tune on the Dyno the tuner stoped and said I was out of fuel so I took a look at the last log he had made from the pull before and it showed 103% up top. We have been keeping afr at the 11.8-12.0 range.

no boost leaks and the pump is not modified. The pump is about 8 months old.

 

Pull that pump out and punch the relief!

 

I guess my concern is if there is a way that something may not be set up the best in my maf or SD tables that could skew the readings i am seeing in evoscan.

 

103% is not like a Standalone or Subaru 103%. Mitsu for whatever reason doesnt go static until 115%. 100% is 80% for most people's way of thinking. Bonestock an Evo runs over 90 at 7600. If the RPMVE has been adjusted A TON OVER 105-107% it starts to add IDC that isnt really there but it has to get extremely exaggerated for it to start affecting it.

Cant remember what we talked about that day but things that could be an issue-

Pump isnt punched or was a low flow out of the box (or both)
Fuel filter isnt flowing (age)
Injectors have gotten goo'd
Torn O-ring on the fuel pump where it slides into the housing

That would explain IDC

Power per psi can be a subject all unto itself.

 

I think when we had discussed this topic years ago it was more than likely because the representation the ECU used topped out at 127. So if it was being read literally and not properly converted you could "end up going above" 100. It makes sense anyway since if its going static at 115, 115/127 * 100 = 90% IDC.