07-05-2011, 10:49 AM
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#1
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Turbo Member
Join Date: Feb 2011
Location: Virginia/Philippines
Name: PI_greg
Posts: 1,370
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Tuning
First off, let me say I love fuel injection. No more pulling float bowls, getting burned on hot engines, spilling gas all over the place and the occassional fire. What I have found and please pitch in if you have done things differently or found something that works. Is that the engine likes to be a little fat running in the lower rpm's under low manifold pressure. In other words WOT coming out of the hole. As the engine reaches toward 4500-5000 rpm I like to start transitioning toward a leaner mixture. This is where knock can start. And of course our PCM will step in to save the motor by retarding advance. Pulling timing effectively kills power. I'm tuned to run A/F 12.6 WOT pulling top end (5800+) and depending on the temperature may have some timing pulled. I like having the knock sensors functional so defeating them is not the answer. But water/methanol injections would certainly do the trick. Haven't decided on what triggers to use yet, but no doubt a combination of rpm and manifold pressure would be the safest. Could also use rpm, TPS and MAP voltage. So the plan is to leaner down for power and use mist to keep from having detonation and timing pulled. Any thoughts are appreciated.
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PI_greg 2003 SXT-Hemi, SS/T rims, 275/60-17, AeroForce, w/wideband, 6.1 ignition, K&N-77 CAI, Fastman TB, eFan, 180 stat, TMR, HD OEM Trans Cooler, SC3865/PSC1, Dual window switch/ high idle mod, Edge, Crazy Spartan (112 lsa), 2800, DTT 4:10, TCI Floor Shifter, Shift lite, Pacesetter Ceramic LT's, Magna Spun Cats/SI/DO Muffler, Mcgaughys 2/4.5 spindle kit, Monroe shocks, Caltracs, Aeon springs bumps, SRT-10 gage pillar, air horn
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