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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Thu Jun 05, 2014 2:04 pm 
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Joined: Wed Jul 04, 2012 2:05 pm
Posts: 377
Why would there be two Tip in tables for NA ECUs? One is rich and the other is richer. is this EGR related? My engine has no AVCS.

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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Thu Jun 05, 2014 3:23 pm 
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Joined: Thu Jan 09, 2014 6:17 pm
Posts: 392
pickler wrote:
Why would there be two Tip in tables for NA ECUs? One is rich and the other is richer. is this EGR related? My engine has no AVCS.

My complete guess is cruise/non cruise.


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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Wed Jul 30, 2014 3:16 pm 
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Joined: Mon Jul 21, 2014 10:44 am
Posts: 103
I've not had a chance to look at any of the subaru tables yet (hopefully will this weekend) but on the MoTec there are three tables for acceleration and deceleration compensation. Clamp, sensitivity and decay. Sensitivity is pretty self explanatory, the clamp is the maximum % value and the decay is the % per rev that is taken out.

If I were tuning a MoTec after looking at your graph I'd say that either the clamp or sensitivity is too high and your decay is too quick. IE you add too much in right away (the quick rich dip) and then you take too much out too soon (the lean climb before settling). If it does this regardless of how "quickly" you add throttle I'd say that your sensitivity is okay, you should lean out the tip-in and decrease your decay value.

Again, those were the MoTec tables and I've no clue yet what the scoobie ones read. Just providing some food for thought to help get juices flowing.

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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Wed Feb 25, 2015 1:49 pm 
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Joined: Sat Dec 25, 2010 6:16 pm
Posts: 71
Can someone give me some advice. When I rev my afr drops to 10 then slowly goes back to 14.7. Is this normal or is this a tip in issue


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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Tue Mar 03, 2015 6:10 pm 
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Joined: Wed Mar 19, 2014 11:34 pm
Posts: 33
I had the same issue and I couldn't understand the TIE tables correctly to be honest with you. So I said to myself: ''ok when I stab the throttle, the ecu sprays more fuel for a certain period of time (delay) and stops...what if I make the correction to be shorter in time? The enrichment becomes less and the AFR won't drop too low?

And guess what...it's about 50% better than before. When I floor it, it goes down to 11.2 and back up to 11.5 wich is my POL fueling. Take note that my open loop MAF scale is pretty acurate so it helps...


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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Thu Nov 05, 2015 12:00 pm 
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Joined: Thu Dec 18, 2014 6:31 pm
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Location: oregon
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Last edited by jon7009 on Sun Sep 24, 2017 8:08 am, edited 1 time in total.

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PostPosted: Fri Jun 03, 2016 4:18 am 
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Location: oregon
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Last edited by jon7009 on Sun Sep 24, 2017 8:07 am, edited 1 time in total.

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 Post subject: Re: Next Problem to be Cracked: Tip-In (Accelerator) Enrich
PostPosted: Mon Jun 06, 2016 1:47 am 
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Joined: Sat Feb 12, 2011 7:27 pm
Posts: 1902
Location: Northern NSW
Professwrx wrote:
pickler wrote:
Why would there be two Tip in tables for NA ECUs? One is rich and the other is richer. is this EGR related? My engine has no AVCS.

My complete guess is cruise/non cruise.


AVLS Off and AVCS On

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