tristanlee85 Posted May 27, 2008 Report Share Posted May 27, 2008 I highly doubt anyone has this, but here's the shot. Dealership wants a testicle for this thing. Maybe someone on here has a totaled car that they plan on getting rid of soon. I don't know. The sender is found on these possible vehicles: 2000 - 20012.2L Chevrolet S-10 pickup 2WD 2.2L Sonoma GMC pickup 2WD20025.3L V-8 engine Chevy Silverado and GMC Sierra half-ton pickups 2WD & 4WD 5.3L Vortec-engine Suburban, Tahoe, Yukon and Yukon XLs 2.2L Chevrolet S-10 pickup 2WD 2.2L Sonoma GMC pickup 2WD 2003 - 20065.3L V-8 engine Chevy Silverado and GMC Sierra half-ton pickups 2WD & 4WD 5.3L Vortec-engine Suburban, Tahoe, Yukon and Yukon XLs 2005 - 20065.3L Vortec-engine Avalanche 5.3L Vortec-engine Police Package Tahoeï 20063.5L Chevy Impala (LS, 1LT & 2LT) 3.5L Chevy Monte Carlo (LS and LT models only) Link to comment Share on other sites More sharing options...
Guest Removed Posted May 27, 2008 Report Share Posted May 27, 2008 got a part number? i can see how much i can get it for (some times dealer mark up on customer parts is high) i can atleast get it for 20% less Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 The 2 numbers I have are 12570260 or 12568450. The second number, I believe, has been discontinued by GM. Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 Roll straight E85 and reap the benefits. Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 That's the plan for the summer, but my winter plan may be different. Link to comment Share on other sites More sharing options...
99FLHRCI Posted May 27, 2008 Report Share Posted May 27, 2008 GMPartsDirect.com GM PART # 12570260 CATEGORY: Computer Control Sensors PACK QTY: 1 CORE CHARGE: $0.00 GM LIST: $626.89 OUR PRICE: $371.61 Still not cheap but better then $600. Check junkyards for one that someone rolled or plowed a tree. Link to comment Share on other sites More sharing options...
Rally Pat Posted May 27, 2008 Report Share Posted May 27, 2008 That's the plan for the summer, but my winter plan may be different. They have winter blends of E85, just like Gasoline. Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 I know that. It's like a 70 ethenol / 30 gasoline mix isn't it? I mean, it isn't required for me to do, but since my standalone supports it... Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 I haven't found a huge difference between the summer / winter blend regarding stoic point and octane. Both do a very good job of suppressing knock,but you can judge the mixture ratio by finding lambda = 1, and everything else (if properly tuned) will fall into place. It's some number crunching, but, if you can't find the freq sensor, it works just as well. The MS community most likely will develop wideband sampling in the near future. Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 Well I have my wideband to output lambda instead of AFR and then I calculated a table for gasoline AFR vs ethanol AFR so instead of a gasoline AFR of 14.7:1 being 9.8:1 ethanol, I converted the ethanol AFR to be the same as gasoline so it'll be easier on the mind to tune... even though I'm sure that was confusing. Link to comment Share on other sites More sharing options...
Rally Pat Posted May 27, 2008 Report Share Posted May 27, 2008 Well I have my wideband to output lambda instead of AFR and then I calculated a table for gasoline AFR vs ethanol AFR so instead of a gasoline AFR of 14.7:1 being 9.8:1 ethanol, I converted the ethanol AFR to be the same as gasoline so it'll be easier on the mind to tune... even though I'm sure that was confusing. OH NOES, MAI BRAIEN! Yeah though, your method seems to be easier in the long run. Link to comment Share on other sites More sharing options...
Rally Pat Posted May 27, 2008 Report Share Posted May 27, 2008 GMPartsDirect.com GM PART # 12570260 CATEGORY: Computer Control Sensors PACK QTY: 1 CORE CHARGE: $0.00 GM LIST: $626.89 OUR PRICE: $371.61 Still not cheap but better then $600. Check junkyards for one that someone rolled or plowed a tree. YEOWZA! Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 YEOWZA! Yeh really. Even for $300+ for a part that I really don't need, I may look for 2000+ cars at Pick n Pull for now. There was a guy on eBay setting the discontinued GM sender for $50 plus shipping brand new, but since I plan on running just E85, the flex sender won't do me much use right now. Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 Well I have my wideband to output lambda instead of AFR and then I calculated a table for gasoline AFR vs ethanol AFR so instead of a gasoline AFR of 14.7:1 being 9.8:1 ethanol, I converted the ethanol AFR to be the same as gasoline so it'll be easier on the mind to tune... even though I'm sure that was confusing. The more you work in lambda the easier it becomes. It took me a few weeks of working in it, but once your brain accepts it, you won't want to go back to AFR. Very helpful if your working with different systems/fuels/etc. Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 The main reason I am converting it to AFR is because my tuning software reads my datalogs, compares it to my AFR table I have defined, and add/removes fuel at specific RPM/MAP values to match what I am shooting for. After 1/2 hr of driving, I just need to fine-tune it. Link to comment Share on other sites More sharing options...
HAOLE Posted May 27, 2008 Report Share Posted May 27, 2008 The fuel composition sensor... Mine started acting funny after some bad gas I got. Try to run a few more tank's full through the car before replacing it. Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 The main reason I am converting it to AFR is because my tuning software reads my datalogs, compares it to my AFR table I have defined, and add/removes fuel at specific RPM/MAP values to match what I am shooting for. After 1/2 hr of driving, I just need to fine-tune it. MS/Megatune doesn't have a lambda option? Wow, I'm out of touch. Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 The fuel composition sensor... Mine started acting funny after some bad gas I got. Try to run a few more tank's full through the car before replacing it. Are you rolling E85 through it? Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 MS/Megatune doesn't have a lambda option? Wow, I'm out of touch. Yes it does, but back when I first starting using the MS, I re-wrote the code for the AFR tables to use AFR values instead of voltage or lambda because it wasn't supported with the AEM 30-42XX at the time though I know the MS2 is. Link to comment Share on other sites More sharing options...
Nate1647545505 Posted May 27, 2008 Report Share Posted May 27, 2008 Yes it does, but back when I first starting using the MS, I re-wrote the code for the AFR tables to use AFR values instead of voltage or lambda because it wasn't supported with the AEM 30-42XX at the time though I know the MS2 is. Word. What's your email? I have a few SAE papers on E85 that may help you out. Link to comment Share on other sites More sharing options...
tristanlee85 Posted May 27, 2008 Author Report Share Posted May 27, 2008 tristanlee85@gmail.com Link to comment Share on other sites More sharing options...
Guest Removed Posted May 27, 2008 Report Share Posted May 27, 2008 best i can get one for is 470..layman has one in stock Link to comment Share on other sites More sharing options...
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