Aem infinity ve high

Evo 8 on aem infinity was tuned on id1000 on 93 octane and ve max was 96% at 5400rpm. After setting up flex fuel tables, replacing injectors with fic2150’s idle and high boost 6000rpm and above are dead on with my afr targets. But mid range I had to raise ve to 128 to hit target afr. I used aem’s injector wizard for the fic2150. Is there an issue with my injector flow or offset causing this?

I am not super familiar with the infinity series but it sounds like there might be some injector data wrong or missing.

Couple of things to take note, with these injectors (if they are the ones I am thinking of) they have a rubber pintle and cannot be used with certain fuels and fuel containing MTBE, A common additive for increasing octane ratings. Being a CNG injector, they are prone to swell internally and reduce flow. I usually let them soak in fuel for 24 hours before fitting and tuning. This allows the pintle to swell and stabilize. With testing on these and the ID2000 we have found they can drop around 150cc in flow.

There is a possibility this can upset a fuel model which relies on accurate injector data, however I would expect the whole table to be out. With such a large injector, on pump gas, things like your short pulse width adder and flow rate vs pressure can have a big influence.

Thanks for the response! The fic 2150 are commonly used for e85 as it was designed to run it. A lot of people run them with great success. I think injector data may be off. The infinity uses ve based tuning. So on pump gas it was tuned perfect with ve. But when I switched new injectors and flex fuel I needed to add a lot of ve mid range to get to the target air fuel. I may try adding some fuel to the injector flow table and see if that helps.

On ID1050X I was running around 95%VE at peak torque, I changed to ID1700X injectors but used the data supplied from injector dynamics directly as opposed to the AEM Infinity wizard. My VE is now at 125% on that same VE cell.

I just ignore it, nothing bad just different to before and personally trust Injector dynamics data for the AEM Infinity over AEM's.