More MAFT tuning ??? (5.slowklr)
Thread Starter
Staging Lane
Joined: Jun 2002
Posts: 67
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From: Milford, MA
More MAFT tuning ??? (5.slowklr) 5.slowklr new user name DolfanZ28 same as LS1.com
I moved the base switch to 15% rich and moved the WOT switch to 0 and have driven about 50 miles since. My LTtrims are now always negative -.8% and –1.6% and never lower than –2.3% and were consistently -.8% and –1.6% while cruising on the highway. They do hover right around 0 at part throttle but shoot down when I’m cruising and off the gas peddle (-5.5% and as high as –6.7%). Is that normal??? If so I think I have a pretty good tune and can start re-adjusting my WOT switch which now looks surprisingly rich.
I moved the base switch to 15% rich and moved the WOT switch to 0 and have driven about 50 miles since. My LTtrims are now always negative -.8% and –1.6% and never lower than –2.3% and were consistently -.8% and –1.6% while cruising on the highway. They do hover right around 0 at part throttle but shoot down when I’m cruising and off the gas peddle (-5.5% and as high as –6.7%). Is that normal??? If so I think I have a pretty good tune and can start re-adjusting my WOT switch which now looks surprisingly rich.
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Joined: Dec 2001
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From: Plainville,MA
Re: More MAFT tuning ??? (5.slowklr) Hey Dolfan your numbers are looking good ! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Do yourself a favor though, Big Mike the forum moderator already moved this post once to the tuning forum don't get him <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> because U will eventually be meeting him at Dez's dyno day on 6/15/02 ! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Big Mike is coming up from L.I.N.Y. then and I would hate like hell to see him fitting U for a pair of his famous cement shoes ! <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
Get the hint peppermint ?
U know what I mean jelly bean ? <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
Do yourself a favor though, Big Mike the forum moderator already moved this post once to the tuning forum don't get him <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> because U will eventually be meeting him at Dez's dyno day on 6/15/02 ! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Big Mike is coming up from L.I.N.Y. then and I would hate like hell to see him fitting U for a pair of his famous cement shoes ! <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
Get the hint peppermint ?
U know what I mean jelly bean ? <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
Re: More MAFT tuning ??? (5.slowklr) DolfanZ28
This topic has better exposure in this forum. Looking forward to seeing you guys next weekend!
<small>[ June 06, 2002, 07:43 PM: Message edited by: Big Mike ]</small>
This topic has better exposure in this forum. Looking forward to seeing you guys next weekend!
<small>[ June 06, 2002, 07:43 PM: Message edited by: Big Mike ]</small>
Re: More MAFT tuning ??? (5.slowklr) I have the same kind of #s for my LTrims at +15% on the base but I had to go 6% RICH at WOT to get the O2 readings to .90 - .905 With WOT adjusted at +4% , I was still around .86 to .87
<small>[ June 06, 2002, 07:49 PM: Message edited by: StevieZ ]</small>
<small>[ June 06, 2002, 07:49 PM: Message edited by: StevieZ ]</small>
Thread Starter
Staging Lane
Joined: Jun 2002
Posts: 67
Likes: 0
From: Milford, MA
Re: More MAFT tuning ??? (5.slowklr) Thanks guys I will keep going at it. Sorry I re posted the thread in the east coast forum even though the moderator moved it. The guys in that forum were very helpful and I wanted to get there opinions on my tune. Guess I should have realized that you guys would of course participate in other forums <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> .
TECH Addict
Joined: Dec 2001
Posts: 2,850
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From: Plainville,MA
Re: More MAFT tuning ??? (5.slowklr) Hey no biggie silly rabbit, it's just better to get more guys looking at your problem ! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
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Re: More MAFT tuning ??? (5.slowklr) Long story short, don't depend upon the O2 readings to set your WOT POT.
I had to set my MAFT to +5/+14 to get my WOT into the .88 average area. When I later did a wideband dyno pull, my AFR was in the upper 14's at WOT.
We reset the WOT to +0 and my AFR was a linear 13:1, and I immediately gained back 30rwhp. My O2's happen to read ~.93 at 13:1 AFR.
I had to set my MAFT to +5/+14 to get my WOT into the .88 average area. When I later did a wideband dyno pull, my AFR was in the upper 14's at WOT.
We reset the WOT to +0 and my AFR was a linear 13:1, and I immediately gained back 30rwhp. My O2's happen to read ~.93 at 13:1 AFR.
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