BJYM and my modified BJYM is now online

[Walter Sherwin]

Hi, been intrigued by your boosted truck stuff.  I might be able to offer
some suggestions.  Drop me a line, offline.  I run 1 bar boost on a 1991 GM
truck.

Walt.



-----Original Message-----
From: Doug Bazarnic <doug at ddelectronics.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, March 15, 1999 1:45 AM
Subject: BJYM and my modified BJYM is now online


>I've uploaded my BJYM code which is for a '95 Chevy 1/2 ton truck, 350
>(5.7L), 4L60E, AC, 3.73 rear gears.
>
>My modified code contains mods for the following "enhancements".
>
>Replaced stock block with a 4 bolt splayed cap block
>Cola Crank
>Eagle Rods
>Ross Racing Pistons with 11.4:1 cr
>Total Seal Rings
>AirFlow Research  195 Heads w/2.05 and 1.88 valves
>Comp Cams Hydraulic Roller camshaft  - .512 I  &  .532 E lift, 220 & 224 @
>.050, 114 lobe sep
>B&M Power Charger 144 Super Charger making 9 lbs boost at the manifold
>Holley 610 cfm throttle body
>Fluid Dampr
>Doug Thorley Headders
>3" Exhaust
>And a 4L60E that's on it's 3rd clutch set, 2nd Torque converter, and 2nd
>Input shaft and housing assembly in 42,800 miles.
>And to give you a better idea how I drive this thing, it's on its 3rd set
>of tires too. :)
>
>My modified chip has a 900 rpm idle, 6000 rpm shift points (or
>thereabouts), and quite a bit of timing.  The fuel is whacky, as the B&M
>kit increases fuel pressure with boost, and the Map sensor rides in the
>90-100% range 95% of the time.
>
>Things that I don't like about my chip:
>
>1. Error code 32:  EGR..... I don't have an EGR anymore, yet the SES light
>comes on daily to remind me that it still isn't there.
>
>2. The over rich fuel condition on upshifting under full throttle.
>Problem comes from the high boost/fuel pressure, and I don't think it can
>be solved via ecm.
>
>3.  A choke setting that's too rich on startup.
>
>Enjoy!
>