Opinion on log and fuel.timing maps
I think you are reading into it too much. 
At 18psi (holding) the car would max out the fuel system. I had to run it very rich (in the fuel map) to even get it close to what my desired AFR was up top. This resulted in 110% IDC's and I still couldn't get the AFR I wanted.
Swapped the walboro in, the first pull with the tune above instantly was over 1 point richer, after tuning I could hold 20psi with no fueling issues, I could achieve the AFR I wanted and the IDC where now 10-15% lower.
Obviously something was going on with the fuel delivery with the pump and the injectors where working over time trying to support the fuel demands.
At 18psi (holding) the car would max out the fuel system. I had to run it very rich (in the fuel map) to even get it close to what my desired AFR was up top. This resulted in 110% IDC's and I still couldn't get the AFR I wanted.
Swapped the walboro in, the first pull with the tune above instantly was over 1 point richer, after tuning I could hold 20psi with no fueling issues, I could achieve the AFR I wanted and the IDC where now 10-15% lower.
Obviously something was going on with the fuel delivery with the pump and the injectors where working over time trying to support the fuel demands.
So, I did some more logging and some more tuning, Looking good. The miss or hesitation was almost gone on the last run, I'm taking baby steps and it should be gone when I am done. What I have noticed is that when calculating IDC's, I'm under 90% in the places I was over 100%. I still have more to lean it out too. Shooting for mid 11's through most of the RPM range after spool, maybe closer to 11 at redline. The car is already feeling better too. Thanks for all the pointers. I love this forum.
last few logs were great. mid 11's, no miss or hesitation, I can't believe how much I had to lean each cell. No more 9's on the map. I say the Walbro is a must for an VIII that has any mods.
So here are some shots of the log, timing map and fuel map. I was able to add a degree of timing here and there. trying to add another degree brought on knock. i'm sure i have some small adjustments to make here and there. The fuel map could still use some, especially since it looks a bit odd but the log looks good. I would like to dyno it and see where I stand.
Log after Walbro Install
Timing after Walbro install
Fuel after Walbro install
Log after Walbro Install
Timing after Walbro install
Fuel after Walbro install
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From: Spec-Ops Motorsports, Fayetteville, NC
It is on 92 oct pump gas. The fuel map is pretty stock, only recently started making changes since I now have a wideband. Was told to get to mid 11's to create a safe buffer. I have been trying slowly. All the talk about Evo being rich from the factory....guess my mods have leaned things out a bit.
if you havent really touched fuel and you are that lean out the door..... id call an exhaust leak somewhere around the turbo.
again, not sure if i missed anything from any other responses after yours, but i dont have much time to read the rest....
i didnt bother to read most of this, just looked at your logs and map...
if you havent really touched fuel and you are that lean out the door..... id call an exhaust leak somewhere around the turbo.
again, not sure if i missed anything from any other responses after yours, but i dont have much time to read the rest....
if you havent really touched fuel and you are that lean out the door..... id call an exhaust leak somewhere around the turbo.
again, not sure if i missed anything from any other responses after yours, but i dont have much time to read the rest....
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