Thoughts on VANOS and (Lean?) Spool Strategy

[Idahospool]

@RSL thanks for the answer. @all4bspinnin p factor was stock. Workin on p and d tables as oscilation just after hitting target are ruff. Whats everyones thoughts on target afr's, seems like most tunes are on the leaner side. Im assuming its because its DI we can run leaner since we arent losing heat transfer to valves and runners?

 

[Jeffman]

Hey Idaho,
I don't get oscillations on my WGDC (rpm x setpoint) tune. Have you thouroughly inspected my bin in TunerPro? If I recall, you have catless DP so (in theory) I think you'll probably want to reduce your P and D tables a little compared to mine to avoid oscillations. Also checkout my fueling tables as well as spool and VANOS. My spool max rpm is 2750 in that bin and my fuel (spool), timing (spool) and VANOS (spool) tables have been adjusted accordingly. I made spool a little lean to help increase EGT which in theory helps spin the turbos faster. Maybe post some logs in Datazap?

 

[Idahospool]

@Jeffman my tables are way higher then yours. Ive been reducing them. I didnt want to copy ur tables so i could learn.

 

[Jeffman]

You're a good student!

 

[RSL]

@RSL thanks for the answer. @all4bspinnin p factor was stock. Workin on p and d tables as oscilation just after hitting target are ruff. Whats everyones thoughts on target afr's, seems like most tunes are on the leaner side. Im assuming its because its DI we can run leaner since we arent losing heat transfer to valves and runners?

I've always run mine fatter than just about everyone else, particularly through spool. My car just prefers it, but yes, most run AFRs that would keep me up at night on a PI car.

@Jeffman my tables are way higher then yours. Ive been reducing them. I didnt want to copy ur tables so i could learn.

Yep, post logs. D-Factor Multiplier goes hand-in-hand with D-Factor and is a more coarse adjustment, may want to start with that, but if you're starting with a stock D-Factor table, can almost guarantee you want to tone it down first. Grab a copy of V8Bait's spreadsheet and read, great place to start.

 

[Idahospool]

I've always run mine fatter than just about everyone else, particularly through spool. My car just prefers it, but yes, most run AFRs that would keep me up at night on a PI car.

Ok, glad im not the only one. Its the wifes car so zero mistakes allowed. Im gonna keep it on the richer side. I read V8Baits spreadsheet several times, super nice of him to make that