For those who are running ID2000s, what kind of air/fuel ratio are you able to get at idle and cruise (using E85)? I'm considering a set, but concerned that I'd give up idle and part-throttle crispness.

Love the crispness (15:1 idle and 15.5:1 cruise) that my ID1000s (and Walbro 400 LPH E85 pump) provide, but am at 98% duty by 7000 RPM, 16 PSI (GT3076R F22C) 11.5:1 on E85. Tried adding fuel pressure, but that didn't drop duty enough, and when I made it to 75 PSI rail base (FPR unhooked & plugged), the pressure seems to drop at the same time duty hits 98%.

If ID2000s wind up being too rich, I'm wondering if a second rail of ID 1000s would fit the bill (staged injection at onset of boost, rail mounted somewhat upstream of the original factory location/rail.

Thoughts welcomed.

 

They dont have any issue idling at 14.5-15 afrs and cruising there either. fuel tank range sucks though but it sucks in stock form anyway

 

They will never idle as smooth as the 1000's but mine idles well at 15 or so and cruises at 14-15 on Kpro.

 

Thanks guys. Priority is avoiding 13:1 ratios and awful transitional pooling I had on my RC 1000s (which resulted in fuel wash and puffs of fuel sucked through the engine at 6000 RPM closed-throttle transitions during autocross).

But if the ID2000s will idle over 14:1 air/fuel ratio and cruise in the 14-15 range, I can live with that if simply wiring the 2000s in will fix my other issue (of running out of duty at 7000 RPM / 16 PSI / 11.5:1 AFR).

Welcome any other ideas too.

 

Cruising and idle are great here but I find that my sweet spot is right at 14:1 for smooth idle.

 

I have FIC 2150 on E85 with a base pressure of 55psi. The sweat spot seams to be around the low 13 at idle. I have to run a little richer at idle so that I don't get a lot of popping from the injectors. Now cruising is great. Also I am on Flashpro with dual 340's and 8an feed and return.

 

Did you hardwire the Walbro 400lph e85 pump to the battery? This will help with fuel pressure and drop duty cycle. How much power did you put out on the ID1000 at 16psi boost?

 

Pm sent