I have tuned for a lean 16.5 : 1 during cruising only. I don't have my decoder ring right now so I don't know what 18 kpa is <G>. My current tune is only for below 10 on the vac gauge.
I am thinking of doing something with the intake but I haven't decided what at this point. I'll probably increase my plug gap this weekend and see what happens. I might also research (meaning I'll go buy them and install) hotter plugs to see if they help. On Wed, Aug 20, 2008 at 10:44 AM, Matt Yates <[EMAIL PROTECTED]> wrote: > Robert, > > At what AFR are you seeing this? I recently tuned my car to cruise in the > high 15's and low 16's and shut off the injectors below 18kpa and i notice > at light almost-coast the car bucks--presumably from a misfire. I'm going > to try and make the transition from cruise fuel to coast fuel more abrupt > to prevent the hydra from interpolating between lean and off (which > results in super lean but not off). > > spark size may not matter if there's just not enough fuel distribution in > the chamber. > > Just a thought to maybe improve lean burn low end torque: I wonder if you > can put a restrictor intake manifold gasket to raise port velocity and > tumble to more evenly distribute what little fuel you have... something > similar to how the VTCS works on the 01-05 cars. ie cover up the bottom > half of the ports. > ( http://members.aol.com/solomiata2/01intake2001.jpg ) > > Matt -- Robert McElwee and Blue Flash "The 50 MPG Miata" www.lightweightmiata.com/mpg Lightweight Miata Forum: www.lightweightmiata.com/forum The Miata Trailer Project: www.lightweightmiata.com/trailer
_______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
