Speed density!!! Arrrrgh!
#11
It misfires or misses when "lugging" up a hill in overdrive?
There is a difference. I have dealt with a similar condition in both SD and MAF systems and I ended up finding that the coil was shorting internal. Found the condition even worse when everything is hot under the hood. Check the resistance on both the primary and secondary side. I Think the secondary resistance should be 15K or greater homes if memory serves. I can't remember the primary resistance.
Also, install a wideband in your exhaust and hook up to a guage and keep an eye on your A/F ratio. In theory, having the O2 in just one header would at worst not correct for an issue with a cyl on the other bank. Be careful installing the O2 in an H/X pipe as it may be to far down stream and too cool for the O2 to opperate properly. There ate also flow issues with an H pipe that can hamper an O2 operating properly.
Good luck
There is a difference. I have dealt with a similar condition in both SD and MAF systems and I ended up finding that the coil was shorting internal. Found the condition even worse when everything is hot under the hood. Check the resistance on both the primary and secondary side. I Think the secondary resistance should be 15K or greater homes if memory serves. I can't remember the primary resistance.
Also, install a wideband in your exhaust and hook up to a guage and keep an eye on your A/F ratio. In theory, having the O2 in just one header would at worst not correct for an issue with a cyl on the other bank. Be careful installing the O2 in an H/X pipe as it may be to far down stream and too cool for the O2 to opperate properly. There ate also flow issues with an H pipe that can hamper an O2 operating properly.
Good luck
#12
I have long tubes on my '92 Bronco. I extended the harness, and put the O2 sensor in the collector on the passenger side. The O2s have heaters into them, so long as they're not the single wire style, so putting them too far away really isn't an issue. I made sure to do all that I could to make the computer think its all stock. I welded on a tube to the first header tube for the EGR. I kept the smog pump, and have that all hooked up. I also cut up an Mustang H-pipe for the cats. All I did was replace the stock fuel regulator with an adjustable regulator to give it for fuel to compensate for the added flow.
#13
I have long tubes on my '92 Bronco. I extended the harness, and put the O2 sensor in the collector on the passenger side. The O2s have heaters into them, so long as they're not the single wire style, so putting them too far away really isn't an issue. I made sure to do all that I could to make the computer think its all stock. I welded on a tube to the first header tube for the EGR. I kept the smog pump, and have that all hooked up. I also cut up an Mustang H-pipe for the cats. All I did was replace the stock fuel regulator with an adjustable regulator to give it for fuel to compensate for the added flow.
#14
Ford junky
22* of timing under load will cause power loss. You are firing the plug too early causing a larger counter force to the compression. Back it off to about 14* to 16*. You will still have power and when you approach a hill, the engine will not have to work against itself as hard.