open loop tuning?

Reply Subscribe

Thread Tools

Search this Thread

02-04-2005, 04:25 PM

#11

boosted_b16

1.5 BAR

Thread Starter

Join Date: Nov 2004

Posts: 820

Re:open loop tuning?

hmmmmm.... i want to know if you can tune in the 02 disabled bin and then just copy/paste it into ng48 ....that would be SWEEET!

02-04-2005, 04:55 PM

#12

projekteg

3.0 BAR

Join Date: Apr 2003

Posts: 11,058

Re:open loop tuning?

Quote:

Originally Posted by boosted_b16

so then it is ok to tune in closed loop?

it's pretty tricky tuning part throttle/cruising and idle in closed loop, but tuning boost isn't too hard b/c you're usually at full throttle anyways.

02-04-2005, 05:41 PM

#13

Rory

0.5 BAR

Join Date: Dec 2004

Posts: 71

Re:open loop tuning?

Quote:

Rory, since I havent been able to play with your BIN personally yet on my car...do you tune your car on your O2 disabled BIN and then when done put those maps back in a normal NG48 BIN? Or does that ---- ---- up?

I just run with the O2 disabled at all times. I have a TD04H that likes to spool up a fairly significant amount of boost at part-throttle and I've seen afrs in the 16:1 neighborhood at 5 psi before with the O2 sensor mucking around.

The only downside I can think of is that the ecu won't keep things stoich on its own while cruising, idling, etc. As long as you tune these areas, it becomes a non-issue.

02-04-2005, 06:01 PM

#14

Chris Harris

3.0 BAR

Join Date: Jul 2003

Posts: 6,449

Re:open loop tuning?

Quote:

Originally Posted by Rory

Quote:

What I thought...I always hated looking at my wideband when partial throttle boosting

02-04-2005, 06:05 PM

#15

Rory

0.5 BAR

Join Date: Dec 2004

Posts: 71

Re:open loop tuning?

Yeah, it's not a very comfy feeling.

Amazingly enough, my car has survived approx. 18k miles of that sort of crap and it's not showing any signs of leaking, smoking or other badness.

02-05-2005, 01:31 PM

#16

Rory

0.5 BAR

Join Date: Dec 2004

Posts: 71

Re:open loop tuning?

On a very related note, I found something cool today. I think you'll like it.

http://forum.pgmfi.org/viewtopic.php?t=4652

02-05-2005, 02:53 PM

#17

Chris Harris

3.0 BAR

Join Date: Jul 2003

Posts: 6,449

Re:open loop tuning?

Nifty

02-05-2005, 03:39 PM

#18

boosted_b16

1.5 BAR

Thread Starter

Join Date: Nov 2004

Posts: 820

Re:open loop tuning?

WOW!!!!! that is ------' awesome!!!!!! i will definitly be tring out that bin...thats perfect to tune with and leave on there for good afr's in vaccume...how did the afr's look in part throttle boost? it cuts out 02 trim as soon as it sees boost even at part throttle?