EFR6258 vs stock rods, round 1: DATSUN wins
02-07-2017, 05:07 PM
#45
Senior Member
Thread Starter
iTrader: (2)
Join Date: Nov 2013
Location: Redlands, CA
Posts: 953
Total Cats: 41
Running pretty much all standard MS3 basic settings from Reverant and when the car starts, it idles well then oscillates between running correctly and getting really really lean like 18-19AFR, almost dying, then returning to normal and then back again.
Any diagnosis? Logs don't tell me too much.
Any diagnosis? Logs don't tell me too much.
Reply
0
0
02-08-2017, 08:12 AM
#46
Junior Member
Join Date: Jun 2015
Posts: 278
Total Cats: 22
They should fit. I used banjo to AN fittings and they fit just fine, so I suspect these, at a smaller overall diameter, to fit as well.
OP, just be careful to route your lines AWAY from the turbine side. Easy way to a BBQ.
OP, just be careful to route your lines AWAY from the turbine side. Easy way to a BBQ.
Reply
0
0
02-08-2017, 08:34 AM
#47
Elite Member
Join Date: Oct 2013
Location: NorthWest NJ
Posts: 1,821
Total Cats: 141
Running pretty much all standard MS3 basic settings from Reverant and when the car starts, it idles well then oscillates between running correctly and getting really really lean like 18-19AFR, almost dying, then returning to normal and then back again.
Any diagnosis? Logs don't tell me too much.
Any diagnosis? Logs don't tell me too much.
Reply
0
0
02-08-2017, 01:23 PM
#48
Senior Member
Thread Starter
iTrader: (2)
Join Date: Nov 2013
Location: Redlands, CA
Posts: 953
Total Cats: 41
My issue is narrowed down to just after start up for about 1min, IACV sounds wide open, fluctuates between a stable 13AFR (warming up) and then 20AFR sometimes dying because of that 20AFR if I have just started the car and it is full cold. Might try going open-loop then trying the start up procedure again, not sure if closed-loop is fighting my WUE or something.
I'll try to get a log and post it.
Last edited by Lexzar; 02-08-2017 at 01:25 PM. Reason: quote
Reply
0
0
02-08-2017, 02:37 PM
#51
Junior Member
Join Date: Feb 2014
Location: Columbus, IN
Posts: 324
Total Cats: 37
Nuts; I thought I was going to be useful for once, and suggest that it may be a IAT heat soak issue, but that would only happen on a hot restart.
Something that helped me understand the MS better was to open up my AFR, spark, and VE tables, and just watch them when the engine did strange things. If you haven't already tried that, it may help you understand the relationships between the tables better.
Something that helped me understand the MS better was to open up my AFR, spark, and VE tables, and just watch them when the engine did strange things. If you haven't already tried that, it may help you understand the relationships between the tables better.
Reply
0
0
02-08-2017, 05:49 PM
#52
Senior Member
Thread Starter
iTrader: (2)
Join Date: Nov 2013
Location: Redlands, CA
Posts: 953
Total Cats: 41
These maps look okay for my first runs into boost? I am still looking for a turner in SoCal that can really tune it probably sometime around June as I will have the turbo on and car going in March hopefully.
Reply
0
0
02-09-2017, 01:26 PM
#53
Senior Member
Thread Starter
iTrader: (2)
Join Date: Nov 2013
Location: Redlands, CA
Posts: 953
Total Cats: 41
Noticed something weird. I have had this boost gaguge hooked up and it has never worked, but I was reversing yesterday and saw the gauge doing this. It only does this when in the car is in reverse. Otherwise the gauge just reads maxed out. Maybe I wired it in wrong?
Reply
0
0
02-21-2017, 05:00 PM
#59
Senior Member
Thread Starter
iTrader: (2)
Join Date: Nov 2013
Location: Redlands, CA
Posts: 953
Total Cats: 41
Boost to kpa, help me out. Kpa is pressure right? So it is always the same for all boost pressure's regardless of how large that turbo is/air it is pushing?
So 6psi turbo pressure would be roughly 140kpa? Even on my 6258 vs say a gt2554r? They would both hit 140kpa at 6psi, even if the 6258 is going to be pushing more air at 6psi?
So 6psi turbo pressure would be roughly 140kpa? Even on my 6258 vs say a gt2554r? They would both hit 140kpa at 6psi, even if the 6258 is going to be pushing more air at 6psi?
Reply
0
0
02-21-2017, 05:14 PM
#60
Senior Member
iTrader: (1)
Join Date: Dec 2010
Location: Farmington Hills, MI
Posts: 1,218
Total Cats: 175
KPa is a unit of pressure. PSI is a unit of pressure. Absolute pressure is just that, absolute. Gauge pressure is the measure of pressure above (or below) atmospheric. Atmospheric pressure is 100 KPa absolute, or 14.7 psi absolute. 100 KPa = 14.7 PSI. So, 6 PSI gauge = 141 KPa absolute. 14.7 PSI gauge = 200 KPa absolute = 100 KPa gauge.
They would both hit 140 KPa at 6 PSI because 140 KPa absolute IS 6 PSI gauge. Yes, you are correct that even though the pressure is the same, flow is not equal, and thus power is not equal for a given pressure.
They would both hit 140 KPa at 6 PSI because 140 KPa absolute IS 6 PSI gauge. Yes, you are correct that even though the pressure is the same, flow is not equal, and thus power is not equal for a given pressure.
Reply
1
1
