AFR gauge reading (Rich)
#1
AFR gauge reading (Rich)
Well, I got the bung welded today for 30 bucks. It works great, except I think the 24# injectors REQUIRE some custom tuning:
At WOT: THe gauge bottoms out to the rich side and reads 10.0
WHat can I expect to gain with a custom tune?
THe place has a dynojet and can do some custom tuning for me. $50 for 3 baseline dyno pulls or $100 per hour of tuning.
I got my SCT from Hemifever, so do you think he can send me some tunes for the extra 100, OR should I just have the place do the tunes for me.
--Dan
At WOT: THe gauge bottoms out to the rich side and reads 10.0
WHat can I expect to gain with a custom tune?
THe place has a dynojet and can do some custom tuning for me. $50 for 3 baseline dyno pulls or $100 per hour of tuning.
I got my SCT from Hemifever, so do you think he can send me some tunes for the extra 100, OR should I just have the place do the tunes for me.
--Dan
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lord only knows what the actual reading is.
As for data logging. i do not have a data logger. Can I do it just by eye and send hemifever the number?
I guess we can start at 10 and then fine tune from there. Basically it is so rich that it does not even display it. It is like when you pin the speedo...except this is the other way.
As for data logging. i do not have a data logger. Can I do it just by eye and send hemifever the number?
I guess we can start at 10 and then fine tune from there. Basically it is so rich that it does not even display it. It is like when you pin the speedo...except this is the other way.
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Hemi can write a better tune if you give him the AF at WOT. It'll take a few tunes to dial it in.
Just tell him what the AF is when its floored and he can back it down little by little.
It isn't as good as a full spectrum, varied load and RPM tune, but its a start.
WOT tuning is possible because of all the stuff the PCM ignores and what can be assumed when zooming at full throttle. No O2 compensations, TPS at 100%, etc.
Just tell him what the AF is when its floored and he can back it down little by little.
It isn't as good as a full spectrum, varied load and RPM tune, but its a start.
WOT tuning is possible because of all the stuff the PCM ignores and what can be assumed when zooming at full throttle. No O2 compensations, TPS at 100%, etc.
Last edited by aim4squirrels; 09-29-2010 at 09:19 PM.
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#8
I know a guy with 26# but he only uses half duty cycle. Maybe I can cut to 75% duty cycle and see what happens.
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well, I have a line running from the AFR gauge for data logging, but it is just a 20 gauge wire. Needs to plug into something.
I think I will try some tunes from hemifever with the WOT AFR number. THen try a few pulls with the dynojet to dial it in.
OH, this morning, the AFR was more like 10.8 at WOT. THis is when the engine is cold before operating temp (when it hits closed loop).
I think I will try some tunes from hemifever with the WOT AFR number. THen try a few pulls with the dynojet to dial it in.
OH, this morning, the AFR was more like 10.8 at WOT. THis is when the engine is cold before operating temp (when it hits closed loop).