need help with next step in tune
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From: Phoenix, AZ USA
need help with next step in tune Ok....Chris (ChrisB) helped me out earlier by verifying my formulas and such on the injector flow table. I went out and drove around for a good hour or so. I watched my L-trims and the O2 voltage and on the whole, it’s doing pretty good.
Here is where I am at now.
On the average, my L-trims are staying in the -1.5 to -4.5 ranges (different throttle settings) which all and all seems ok for the first time out. My problem is the O2 voltage, its between 0.935 and 0.960 volts
(REALLY rich)!!!
I need to know how to approach leaning out my WOT (its bogging the engine).
The MAF is an aftermarket, recalibrated unit with the screen removed. As such, I have not adjusted the MAF table yet (still stock settings).
I'm afraid if I pull any more fuel out of the injector flow table I will end up going lean everywhere BUT WOT.
Should I pull a little fuel out of the PE table to try and bring the WOT down, should I pull more fuel out of the injector flow table, and or should I tweak the MAF table?
It would be "nice" not to have to screw with the MAF table if I don’t HAVE to.
Thanks in advance,
Chris
Here is where I am at now.
On the average, my L-trims are staying in the -1.5 to -4.5 ranges (different throttle settings) which all and all seems ok for the first time out. My problem is the O2 voltage, its between 0.935 and 0.960 volts
(REALLY rich)!!! I need to know how to approach leaning out my WOT (its bogging the engine).
The MAF is an aftermarket, recalibrated unit with the screen removed. As such, I have not adjusted the MAF table yet (still stock settings).
I'm afraid if I pull any more fuel out of the injector flow table I will end up going lean everywhere BUT WOT.
Should I pull a little fuel out of the PE table to try and bring the WOT down, should I pull more fuel out of the injector flow table, and or should I tweak the MAF table?
It would be "nice" not to have to screw with the MAF table if I don’t HAVE to.
Thanks in advance,
Chris
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Joined: Nov 2001
Posts: 2,207
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From: College Station, Tx
Re: need help with next step in tune You should be carefull tuning with the stock O2's - you really can't depend on them for too much at WOT.
That aside, you should do WOT tuning via the PE vs RPM table if at all possible - that is specifically what that table is for.
That aside, you should do WOT tuning via the PE vs RPM table if at all possible - that is specifically what that table is for.
