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Originally Posted by iroc343
I am using accell 24 lb/hr injectors. Funny thing is, as long as I keep it running and cleaned out for 30 seconds it's fine.
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It only "seems" fine. Your rich condition in open loop tells you that something isn't quite right. You are running a MAF TPI system. Because the MAF sensor knows exactly how much air is entering the engine it can compensate for a multitude of "sins" (mods). If you were to run a scanner while your engine is in closed loop I would bet that your BLM's were nearly firewalled at 160.
The Accel 24# injectors aren't 24#. I used to have them in my car after switching from a 305 to a 350 with heavy mods and I had to "lie" to the ECM and tell it they were 20# injectors (makes the injector pulse them longer) to get my BLM's down to the low 130's. I finally replaced them when I got the Accel TPI base and put in LS1 injectors (25#) and only had to fib a little to the ECM to get the BLM's to read 126-130 (the "happy" range).