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10-12-2013, 07:26 AM
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#1 |
 
Drives: 2012 2SS 45th Join Date: Jun 2012
Location: Honolulu, HI
Posts: 46
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weird injector problem
I'm experiencing weird injector problem.
or just wanna check if my setting is wrong... I'm using ID-850 and set the data in the tune properly with HPTuners. usually AFR at idle is fine and stable around 14.6 with CL. But It'll be super rich after driving more than 30 mins, and turn off and sit the car about 5-10 mins and turn it on again. It is going back to normal if I let the car to cool down around 30 mins, or drive slowly. injector pulse width is even looks weird. when it is good, the pulse width is 1.4msec and 14.6 AFR when it is bad, the pulse width is 0.9 and 14.6 AFR(this changed by CLFT) I'm kind if thinking IAT temp has something with this, because most of the time this happens IAT is around 140 when cranking. IAT is drop down right after I drive the car to around 100 and take around 20 mins to be normal. I only see those temp related parameters for open loop in HPtuners, but it only happens in CL... I try run OL only , but I can't set leaner than 11.9 AFR with VE table some how... Should I run this injector with 3 bar fuel pressure??? |
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10-12-2013, 10:34 AM
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#2 |
 
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Hmmmmmmmmm
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10-12-2013, 04:33 PM
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#3 |
Drives: 2007 Corvette C6 983 RWHP Join Date: Dec 2011
Location: Montreal, Canada
Posts: 690
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Try playing with the "injector flow rate multi vs. IAT.
__________________
2007 C6 vert, auto, F55, LT3
LME LS402 , WCCH 245 Heads, Pat G. Custom cam YSI / 3.0 pulley, ARH 1 7/8 headers, NPP Dewitts / dual spals, A&A dual pump fuel system. 3.42 polished gears, hardened shafts, Alky control meth, Cartech line lock, ECS axle loops, Trans brace, 6L80 built by me. ID 1000 injectors, comp rockers, Morel lifters, BT springs, Trend 3/8 pushrods, ATI 10% OD Damper Circle D Triple Disc stall 1009 RWHP @ 7000, 817 RWTQ @ 6000, |
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10-12-2013, 05:06 PM
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#4 |
 Drives: 2010 SS RS Join Date: Apr 2009
Location: Honolulu, Hawaii
Posts: 930
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Not a tuner, but taking a guess, could it be COT? I run ID1000 with KB BAP, zl1 pump, and adm fpcm. At idle, pulse is ~0.8 - ~1.0. Fuel pressure is solid at idle and at redline.
So far, only only odd intermittent thing is sometimes I get a longer cranking time when starting. I haven't driven the car much since I've been addressing suspension recon issues. Other than that, car runs great with id1000s. |
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10-12-2013, 06:31 PM
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#5 | ||
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Drives: 2012 2SS 45th Join Date: Jun 2012
Location: Honolulu, HI
Posts: 46
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Thanks for the reply!!
Quote:
I found one more wired stuff when those stuffs are happen, commanded AFR shows like running in OL. but.... STFT is working somehow. this is right after start the engine Quote:
I just flashed new tuning that has dropped fuel pressure at 3 bar(43.5psi) Just for lower pulse width Turn on LTFT because this problem is not happens as long as fuel trims working, so I just gonna tune with LTFT. I was turning off LTFT for tuning with STFT only. drive around town 2 hours around noon and it looks fine as I expected. I'll spend more time with it. I'm monitoring Injector tip temp and Intake valve temp. but I think those bigger injector has not be friendly without fuel trims at idle because even I changed some stuffs in Transient but not help that much... like it is not easy to set stoichiometric AFR at idle on Open loop, just because can't set the lower number in injector settings and Transient in HPTuner. BTW... I hope I didn't get defective injectors... LOL |
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10-14-2013, 08:50 AM
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#6 |
        Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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Sounds like the evap canister purging.
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Nick
Corvette Z06 -1200ish rwhp |
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10-26-2013, 04:37 AM
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#7 | |
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Drives: 2012 2SS 45th Join Date: Jun 2012
Location: Honolulu, HI
Posts: 46
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Quote:
Well, that something I need to figure out. since I changed lingenfelter fuel pump, I do have some wired feeling that something ring a bell.... I'll drop fuel tank and check all the connection again, try set all the OL parameters not change fuel delivery related temps, and check that again. anyways, it is related with temps, so I decided to install super chiller system, so I can stay cool. and always almost same conditions that"ll makes easier to tune my car.
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2012 Camaro SS 6AT
DOD/VVT delete, TSP Turbo cam, pushlod, COMP675 spring, Lingenfelter twin fuel pump, ID-850 injector, ZR-1 3bar MAP sensor, port matched head and LS3 intake valve, manley ex valve, ARP head stud. no weeds diverters, MagnaFlow 3" X pipe and street axleback Hellion Twin Turbo Kit :Turbonetics BB Billet 64mm 4' intercooler E-Boost2 with twin 4port solenoids, Turbosmart ultragate38, Tial Q BOV 2Bar SD tune |
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11-07-2013, 05:45 AM
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#8 | ||
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ʇuɐıʌǝp lɐıɔos
Drives: 2011 2SS/RS LS3/M6 Join Date: Feb 2011
Location: Pennsylvania
Posts: 231
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Quote:
Quote:
Evap Purge On Cells; cell 0-1 Airflow based cell 2-5 Not used cell 6 Idle cell 7 Decel Evap Purge Off Cells cell 8-9 Airflow based cell 10-13 Not used cell 14 Idle cell 15 Decel Log the fuel trim cell you are in to see if purge is on or off. You can also use this to filter out idle or decel data. Be aware that the PCM can command any percent purge from 0-100 so how rich it runs during purge will vary. I just disconnect the evap purge line where it goes into the intake then plug the intake hole when tuning. Let the end coming from the evap solenoid unplugged to vent into the air . |
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