Tuning issue
08-06-2017, 05:43 AM
#1
8th Gear
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Tuning issue
Just had a flex fuel sensor installed and shop is retuning the car. Did some drivability tuning and then flashed the computer. Upon attempting to do dyno tuning.....the car stopped sending information regarding cylinder pressure. ALL other data is coming through fine. Tuner thought maybe a bad MAP sensor...replaced and still no go. The car runs fine, but tuner can't complete the tuning processes because timing is not displaying aND no one seems to know why the car is sending all information from other sensors, minus cylinder pressure information. Any clues?? It's an 09 z06, built top end, holley high ram, large cam, stock heads ported by lme, current e85 only tune. Car was built by lethal performance put of SA texas and they pretty much tuned the car on e85 around not having the flex sensor. Come to find out the car basically didn't know what kind of fuel it was running. As of now, The tuning program and equipment is working fine, as the shop moved my car out f the way and tested the software on a CTSV, GTO, and a high boost miata. I can provide more information if needed, just giving the basics of the problem. Let me know what else info wise you need if it may lead to solving this damn rubix cube.
08-07-2017, 10:15 AM
#3
8th Gear
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Tuning
No codes. Only thing showing is the traction control error due to the car being strapped to the dyno. I did have a crank shaft position code throw a few weeks back, after having a major vac. leak repaired, but it self corrected. I can get more details on the exact issue today. Now I'm not really aware of how the tuning process goes down, so when you say, 'deleted channel', what are you referring to? Sorry if that was a stupid question, but rather ask a stupid question then act like I know.
08-07-2017, 11:18 AM
#4
Race Director
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St. Jude Donor '15
What the hell is cylinder pressure?
Post a log and layout for what they're trying to use in HPTuners and I'll check it out. Sounds like sevinn might be right though.
Post a log and layout for what they're trying to use in HPTuners and I'll check it out. Sounds like sevinn might be right though.
08-08-2017, 01:39 PM
#5
Team Owner
Sensor popped out? Only way the FF could mess with that is if the pulled power for it off the map harness, and now you have an electrical short or something.