gravedigger472

welll, let me clarify. before doing any tuning and getting into boost, we made a base timing table so it would pull a ton of ignition timing (to about 9-10*) when the truck would be in boost. This will ensure the truck would safely run while dialing in fuel mixture, not having to worry about detonation. After we got the VVE and mass airflow dialed in, the truck would deliver the fuel mixture we commanded in closed loop and PE modes, so there is no worry about leaning out.

Then, we slowly added timing back in a little at a time, (while on the dyno) measuring power gains and seeing what the truck liked.

Mean Green z28

iTrader: (19)

Ah gotcha..thanks

Have been following the EFI Live VVE tutorial and logging some runs. Still rich past about 3k. Have a 3.5psi spring in the wastegate to keep boost low but may put a smaller one in.. will slowly up the boost as the lower end of the table is cleaned up by using the boost controller (AEM TruBoost).

Mean Green z28

iTrader: (19)

BTW, do you by any chance remember what MAP and RPM boundaries you'll used? I feel like I need to more the boundaries more into the boost range than the off boost range, but then most driving happens in off or light boost.

gravedigger472

you mean the scaling of the VVE table?

my manifold pressure goes from 15 to 255 kPa alternating between 7 and 8 kPa increments, and RPM goes in 200 rpm increments between 400 and 6,400rpm, so there is plenty of resolution in the table for vacuum and boost areas.

if you are asking about the tables "zone RPM boundaries" and "zone MAP boundaries" we didn't change those from stock

Mean Green z28

iTrader: (19)

Yeah I meant the boundary tables. Since mine pretty much makes boost from 2k we had to modify the table so we'd have more boundaries when in boost.

Mean Green z28

iTrader: (19)

Very slowly getting the fueling figured out. Put in a 3.5psi spring and set up the controller to its 90% duty cycle max and only got about 7psi out of it. Then set it up different which would let allow more ... 11 psi came super quick! Didn't expect it lol. Had to turn it down until we really start dialing things up. May go for a 4-port solenoid eventually instead of the 3-port ... I somehow feel there needs to be a vent.

Mean Green z28

iTrader: (19)

So we may have figured out a fueling issue we kept having if I stomp on the gas vs. get on it gradually ... never thought of looking in the trans tune and the torque reduction tables. Some of it was almost 40% !!! Have yet to do a run/log but hopefully it let's us make some progress.

Mean Green z28

iTrader: (19)

Still fooling around with tune. Had crazy lean spikes trying to do it the conventional way. Now the tune is scaled and we don't see the crazy readings we had, so I guess we're making progress. With my time and my buddies combined, we should have just taken it to a shop and had them go through it from the start. However, I'm completely tapped out right now and another 500-600 isn't in the budget. Maybe on the divorce budget if I did spend it, lol

Mean Green z28

iTrader: (19)

Not a high dollar build as others but it's still boing along ... in the process of getting a 3200 stall converter and the Tru Cool 40k cooler to wake this bitch up!

Currently have it set at 15psi using an Innovate SCG -1 widebang/controller ... loving this controller a bit more than the AEM TruBoost I had before!