Sorry to be such a noob but can someone explain what an SD tune is exactly? Also when and why is it necessary to go with SD tune? Thanks for all the great help guys
Sorry to be such a noob but can someone explain what an SD tune is exactly? Also when and why is it necessary to go with SD tune? Thanks for all the great help guys
SD stands for speed density and is normally done on forced induction or large cam applications. It deletes the MAF sensor and uses a 2 bar (or 3 bar if running over 15 psi) MAP sensor. This allows fuel to be added based on boost and atmoshperic pressure rather than just air flow across the MAF. In higher boost situations, the MAF sensor becomes maxed out and can't measure the amount of air coming across. A good tuner can still tune with this but it becomes more of a guess. Overall, SD is more accurate.
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
great info thanks man so I can wait at least untill the cam swap to go SD
For most cam swaps, you won't need to go SD. It's usually just used when you are putting in something pretty nasty. High lift, lots of lope types. List the cam specs that you are wanting to go with.Originally Posted by bam
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
I have a speed density tune.
99RCSB Broke because I wasted thousands and thousands of dollars on my truck.
See post #2...I have a speed density tune.
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
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