02-17-2019, 08:12 AM | #29 |
Drives: 2014 Cadillac ATS 2.0T Join Date: Jun 2018
Location: Indiana
Posts: 51
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It compensates both fueling and timing with set tables in the ecm for different ethanol percentages. As a tuner you can change any of these tables.
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02-17-2019, 10:32 AM | #30 | |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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Yeah, I gotta get more timing ramped in still. I keep finding tables that have retard build in where it shouldnt, fighting fuel trims took a lot of time, and is still a working progress. Here is one of the log files if you want to take a look, see if you see anything, or got any advice. All help and knowledge VERY much appreciated! https://transfernow.net/ddl/e85
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02-17-2019, 10:49 AM | #31 | |
Drives: 2014 Cadillac ATS 2.0T Join Date: Jun 2018
Location: Indiana
Posts: 51
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02-17-2019, 11:06 AM | #32 | |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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Quote:
Thank you sir! I was wondering about bringing PE in a bit sooner. So nix VE ? I was trying speed density, its OK. I will give maf a try though.
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02-17-2019, 11:55 AM | #33 | |
Drives: 2014 Cadillac ATS 2.0T Join Date: Jun 2018
Location: Indiana
Posts: 51
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I was able to get my FT's in low single digits across the board quickly and have a smooth stable idle even when its -15F Most say you can't run corn fuel that cold. The LTG did fine, granted I was only at 40% corn. It's also easy to make fine adjustments under WOT as well in very specific ranges and when combined with HPTuners smoothing function, works well. |
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02-23-2019, 07:27 PM | #34 |
603 Camaros
Drives: 2017 NGM I4 1LT Coupe Join Date: May 2012
Location: Manchester, NH
Posts: 6,779
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I can only imagine the 20 or so PMs a day.
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MY 2017 I4 CAMARO BUILD JOURNAL | YOUTUBE | INSTAGRAM | 316RWHP - 385 RWTQ HPTUNERS DYNO TUNE | 12.693s @ 105MPH 1/4 Mile |
02-25-2019, 10:51 AM | #35 |
Drives: 2016 1LT RS Camaro; 72 Chevelle Join Date: Apr 2008
Location: Central Point, OR
Posts: 5,688
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Haha, see, Jason's not as stupid as he seems lol.
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02-25-2019, 03:20 PM | #36 |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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ROFL Jason!
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02-27-2019, 09:29 AM | #37 | |
Drives: Cadillac ATS 2.0T Join Date: Feb 2019
Location: OH
Posts: 7
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Quote:
With that said, I do run 100% speed density, because I run a much larger than stock dia. MAF, something I wanted to do to test setups that will be required for bigger power setups. If you're stock dia MAF or close to it, you can still easily dial in fueling that way as well. Last edited by Gibspeed3; 02-27-2019 at 09:49 AM. |
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03-01-2019, 08:38 AM | #38 | |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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Quote:
Ok, I see what your saying, appreciated! I'm getting ready to purchase my credits for the lpfp stuff. Looking at the available tables, everything is a bit foreign, and there is a lot more there than I would have expected to see. Would you mind sharing any tips on what areas to look at here?
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03-01-2019, 09:23 AM | #39 | |
Drives: Cadillac ATS 2.0T Join Date: Feb 2019
Location: OH
Posts: 7
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You want to concentrate on the Regulation Pressure and Max Desired Pressure to start. I would personally set the entire Regulation Pressure equal to whatever your max is in that table. Mine was 550kpa for example. Then, set all your Max Desired Pressure somewhere just below that level. I've been running mine at 525kpa, again, as an example. That alone should allow you to run and hold 76psi on the low side throughout the entire power/rpm band. The only other table you may need to modify at some point is the OL/ Fuel Pump DC table. This maps out the base duty cycle for the pump, which the ECU thinks will be required to hit the desired pressures. You only need to change this table if you log your LPFP and you're not seeing your max desired pressure at some point, then cross reference that with logged pump DC and see that you're at the duty cycle requested for that flow rate. That just means you need to request a little higher DC in that area. |
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03-01-2019, 10:29 AM | #40 | |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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Quote:
Perfect!! Thank you VERY much sir. Awesome information to have, and will save me a ton of time researching
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03-04-2019, 02:51 PM | #41 |
Drives: Ford Mustang GT350 Join Date: Mar 2019
Location: GA
Posts: 1
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Very impressive work your doing!! Question, have you found the limit of the Hpfp using e85 from your tuning yet? Wondering how much headroom there is. I feel like you May have answered this before but what’s the max torque you’ve been able to achieve and at what rpm?
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03-06-2019, 10:51 AM | #42 | |
Coopers Camaro
Drives: 18 Flex Fuel LTG Join Date: Nov 2016
Location: St. Louis/Sullivan/Washington MO
Posts: 933
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Quote:
Thankd you. I have not found the limit of the HPFP yet. I am told 400HP give or take, IDK. I have been told many things,(some true, some not so much) so only time will tell I guess. So far, Ive logged a max of 405 TQ. Sweet spot seems to be around 4200+- rpm's.
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