a1320honda

Ive been tuning for a few years, but im tuning my car for the first time using ID2000's. I know the low speed linearity of these injectors is supposed to be phenomenal, but under low speed 4th and 5th gear cruising, the car is bucking and stumbling even though the AFR's show mid 14's and timing is good. Base pressure is 45psi static. Would more or less fuel pressure help the issue. The car used to be on E85 but only 1 station thats 25 minutes away kinda sucks. Ive been messing around with it for a few hours and havent been able to come across the answer yet. Any help would be greatly appreciated. And yes, the injector offsets are correctly entered.

Muckman

iTrader: (2)

2000cc on gasoline? It sounds like the injector is at or near 0% duty - check the log. Im running 1600cc on E85 and Im below 1% duty at 900rpm @ 14.0 AFR so I can only imagine where you are on gasoline and bigger injectors. If you were running on E85 it wouldn't be as bad bc the increased volume demand would force you to increase the duty cycle. Just try fattening up the fuel table in those cells and live with a richer cruise AFR, it will be smoother.

a1320honda

Thats pretty much what Tony told me to do also. Expect a fat idle and cruise and pull timing in the cruising portion. I ran PTE 1600's on on my last setup on E85 and got it to idle right at 1000 with a 15.5AFR. Sucks the E85 station is far away. Might have to deal with it though.

Muckman

iTrader: (2)

Yeah bottom line is 2000cc is absurdly huge to idle on gasoline. If you watch the video of ID2000 idling on a stock LS you can see the AFR is at 11.9. Thats the trade off for a smooth idle. You've hit the limit on huge injectors vs little fuel. Remember back in the day that limit was 1000cc?

Another option would be a dual stage injector setup. You could easily wire secondary injectors to run off a stock ecu. That way you could get the best of both worlds.