Boost and Auto VE

Reply Subscribe

Thread Tools

Search this Thread

Dec 31, 2006 | 02:30 PM

billyjo

Thread Starter

On The Tree

Joined: Dec 2005

Posts: 126

Likes: 0

Boost and Auto VE

What am I doing wrong? I'm already lean in boost and it looks like it's trying to take away more fuel. My AFR @ 135 kPa= or - is 12.70-15.08 which gives it an average of 13.8.

Attached Thumbnails

Boost and Auto VE-da2a5d96-bed0-e740-397dc497f24dbeec.jpg

Boost and Auto VE-da2b9822-b103-aba5-b05b5de1ca01ab9c.jpg

Dec 31, 2006 | 02:49 PM

TAQuickness

TECH Junkie

iTrader: (28)

Joined: Jan 2004

Posts: 3,250

Likes: 1

From: Houston

I'm having a hard time seeing your map screen shot. One thing I could tell, what that you have one map to cover from 15-215 kPa. It will probably help you to split the VE table into two maps corresponding to your calibration. IIRC, one map will be identical to your VE table (15-105 kPa) and the other to your boost map (105 - 215 kpa).

From the chart view, you're commanding 14.xx AFR under the highlighted region. You should be commanding much richer than that.

Dec 31, 2006 | 02:57 PM

billyjo

Thread Starter

On The Tree

Joined: Dec 2005

Posts: 126

Likes: 0

So how do I get it to command a richer AFR when I'm in boost?

Dec 31, 2006 | 04:54 PM

onfire

Coal Mining Director

iTrader: (17)

Joined: Nov 2001

Posts: 4,442

Likes: 0

From: Virginia

Quote:

Originally Posted by billyjo

So how do I get it to command a richer AFR when I'm in boost?

TAQuickness id dead on right.

Plus which cos are you using? COS5 has a table that lets you set the target AFR plus you need to set PE to activate at 40kPa and set the rpm vs PE table to 11.5 : 1 just for starters....can lean it up later.

Dec 31, 2006 | 05:48 PM

Black02SS

TECH Junkie

iTrader: (36)

Joined: Oct 2002

Posts: 3,291

Likes: 1

From: Kokomo, IN

Quote:

Originally Posted by TAQuickness

From the chart view, you're commanding 14.xx AFR under the highlighted region. You should be commanding much richer than that.

I agree 100%. I wouldn't go WOT anymore until you set your commanded AFR/PE to 11.5. That is way to lean for a FI setup. If you need help getting it setup, email me your tune and I'll get you going in the right direction.

Last edited by Black02SS; Jan 1, 2007 at 07:37 AM.