Well I got more chips so I'm back to my second ARAP rev. I'm showing BLM steady at 160 at idle in closed loop. If I give it any gas at all to get into cell #4 it goes to 130. Timing there is at 20d. How should I add fuel only at idle? Is this a usual problem with the HOT cam?

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'87 Formula WS6 - ZZ4 Crate TPI, Scroggin-Dickey ported heads, LT4 hot cam, 1.6RR, Accel runners, Accel base, ported plenum, Edelbrock 58mm TB, Crane Fireball ignition, SLP cold air, SLP 1 5/8 headers, !cat, Summit exhaust cutout, Walbro 255, Koni yellows, Hotchkis panhard & LCA's, 9 bolt w/3.27's.

 

I have had the same problem.I got 19lb injectors and was maxing my blm.check your o2 sensor reading.It does'nt have to do with injector constant,unless its way off.I used a stock bin w/ constant at 19lbs the blms went up .I went home and burned 3 proms,18.5lbs,18lbs,and17.5lbs.The 18.5 ran the best but did'nt effect my idle blms.So I'm going to burn 3 more proms and get to the bottom of it.I have ask the same question with no response.

 

Try adding a few points to the injector PW/Battery voltage correction (in the 13-14v area). That little PW correction will show most at idle, and just off idle.

 

Thanks Grumpy, I'll try that.


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'87 Formula WS6 - ZZ4 Crate TPI, Scroggin-Dickey ported heads, LT4 hot cam, 1.6RR, Accel runners, Accel base, ported plenum, Edelbrock 58mm TB, Crane Fireball ignition, SLP cold air, SLP 1 5/8 headers, !cat, Summit exhaust cutout, Walbro 255, Koni yellows, Hotchkis panhard & LCA's, 9 bolt w/3.27's.