anyone got the afr on a 98 model under control?
Thread Starter
Staging Lane
Joined: Nov 2001
Posts: 83
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From: jawja
anyone got the afr on a 98 model under control? Went back to the dyno today with ls1-Edit to try and get the afr under control with the wideband 02
I have come to the conclusion that LS1-edit wont correct the afr past 12.1:1 above 5600 rpm I started at 10.2:1 above 5600 and I quickly got it up to 12.1:1 but several pulls later I ended up with the same 12.1:1 afr
I went over -50% in the pe vs rpm table and it never changed? Im confused as to why it wont change anymore. Has anyone got it correct with H/C and headers? Can the SUPERTUNERS get it right above 5600 rpm? Im just wondering if its possible and if so how did you guys do it? Im out 550 for the ls1 Edit and over 500.00 in dyno pulls and I still cant get it tuned! <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> Car makes pretty good rwhp 395 for a a4 car but Im sure theres more in it with the better AFR
I have come to the conclusion that LS1-edit wont correct the afr past 12.1:1 above 5600 rpm I started at 10.2:1 above 5600 and I quickly got it up to 12.1:1 but several pulls later I ended up with the same 12.1:1 afr
I went over -50% in the pe vs rpm table and it never changed? Im confused as to why it wont change anymore. Has anyone got it correct with H/C and headers? Can the SUPERTUNERS get it right above 5600 rpm? Im just wondering if its possible and if so how did you guys do it? Im out 550 for the ls1 Edit and over 500.00 in dyno pulls and I still cant get it tuned! <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> Car makes pretty good rwhp 395 for a a4 car but Im sure theres more in it with the better AFR
TECH Fanatic
Joined: Nov 2001
Posts: 1,190
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From: Las Cruces, NM
Re: anyone got the afr on a 98 model under control? Are you sure you werent maxing out the injectors or losing fuel pressure above that point. Look at your injector pulse widths and see if your fuel pressure was dropping. Could be several other things, plenty of people of gotten it to work.
Gary
Gary
Thread Starter
Staging Lane
Joined: Nov 2001
Posts: 83
Likes: 0
From: jawja
Re: anyone got the afr on a 98 model under control? Gary I have 38lb injectors so I dont think Im maxing them out. If FP was dropping wouldnt it be lean instead of so rich? BTW I have a walbro 340 pump so I dont think that would be the culprit. I have seen several 98`s with the same trouble as me.Have yet to see a 98 with perfect high rpm afr. 99 up models seem to not have the same trouble.
Re: anyone got the afr on a 98 model under control? I have the same problem...Ken was looking for a fix for this in the code.
Hopefully he gets it figured out pretty soon...I don't know what the point of LS1Edit is if you can't drop the AFR. Especially after investing in a 1000 WB setup.
Scott
Hopefully he gets it figured out pretty soon...I don't know what the point of LS1Edit is if you can't drop the AFR. Especially after investing in a 1000 WB setup.
Scott
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