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11-18-2008, 09:33 PM
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El Cochecama
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Join Date: Feb 2007
Location: Spring, Texas
Posts: 699
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Whew! Glad I'm not the only one! Mine feels the same way with gaining A LOT of power. I went to straight meth instead of 50/50 mix to try and keep it rich but there's still a small period of time where the AFR goes into the high 11's/low 12's but I'm seeing zero KR. Hopefully, I can make it back by to have it re-tuned with the cold weather......and get an inspection across the street!!! 
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Sleeper
422 hp/411 tq @ 9 psi!!
2004 Silverado Crew Cab, 5.3, STS MP-70, 11 psi, FMIC, BOV, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, Trucool 40k trans cooler, 42# injectors, Walbro fuel pump, Patriot springs, FLT Level 5 4l65E w/billet input & output shafts, Eaton posi, Nelson SD tuned...all installed by Klein North Automotive
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11-18-2008, 09:58 PM
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Resident Pilot
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Join Date: May 2008
Location: Schertz, Tx
Posts: 753
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Amen to that...I'm coming up on an inspection myself.
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07 Z71 4x4, 5.3L, 3.73s, Intercooled Turbonetics T76 @ 10 psi, ZEX N2O (75 hp wet shot), Snow meth kit, PLX DM-100 wideband gauge, Nelson tune, Comp 212/216 .557/.561 114 lsa, 160 stat, Yank 2600, FLT 4L65E Lvl 5, Magnaflow - dumped, e-cutout
Line-X, Pace Edwards Full Metal Jackrabbit bedcover
Latest run at the track: 13.44@102...2.17 60' still workin' on the launches
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11-18-2008, 10:04 PM
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Senior Member
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Join Date: Oct 2007
Posts: 111
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the air is more dense... what allen said.. needs more fuel. afr is off because more oxygen can be saturated in cold air. need to add more fuel to get the ratio back right. My mustang was running so lean today I picked up a little detonation.. Stock tune at that.
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02 ecsb. 08 mustang gt. they aint stock.
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11-19-2008, 02:52 PM
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Senior Member
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Join Date: Jun 2007
Location: maine
Posts: 967
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what is a proper AFR range? i guess if im going to go FI i better start learning something about it...
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NOW: 1998 c-1500. swapped 02 5.3 with a t-56 6 speed. thunder racing 220/220 cam/7.4 rods/patriot dual gold springs/fresh lifters/arp head studs,custom built dual 2.5" stainless exhaust into a 3 inch corsa single, K&N 77-CAI, hurst short throw shifter, bored shaner S3 TB,Nelson 91 Tune, underdrive pulley, efans,ls7 clutch kit,upgraded slave cylinder, auburn LSD,richmond 4:56 gears, on BFG KDW 285/30/20
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11-19-2008, 03:02 PM
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Senior Member
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Join Date: Jun 2007
Location: maine
Posts: 967
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well im only planning on running about 6lbs for now.
i guess my list of things to get are
bigger injectors #42
walbro Intake 255
AFR guage
Boost guage
what is is a necessity?
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NOW: 1998 c-1500. swapped 02 5.3 with a t-56 6 speed. thunder racing 220/220 cam/7.4 rods/patriot dual gold springs/fresh lifters/arp head studs,custom built dual 2.5" stainless exhaust into a 3 inch corsa single, K&N 77-CAI, hurst short throw shifter, bored shaner S3 TB,Nelson 91 Tune, underdrive pulley, efans,ls7 clutch kit,upgraded slave cylinder, auburn LSD,richmond 4:56 gears, on BFG KDW 285/30/20
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11-19-2008, 04:52 PM
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Senior Member
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Join Date: Mar 2003
Location: San Antonio, TX
Posts: 5,485
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In order to get 6psi you'll need some type of charger, belt or exhaust driven.
hahah jk.
those items listed above are the only things you'll need. |
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Linear Mode
