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drwillb drwillb is offline
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Default interesting fuel pump behavior (was PS1 first log check) - 08-31-2018, 07:31 AM

I installed a PS1 last weekend and finally got some logs after reading up and switching to map 6 with custom targets. I forgot to get a snapshot of that screen but max boost is at 17psi from 3k to 5500 rpm then taper down to 15psi at 7k.

In addition to the turbo, I also put in new Bosch plugs and coils, boost solenoid, and DV+.

Car: 2012 e82 N55, CP, AD Engineering 650 intercooler, PE muffler, stock **, BMS filter, 93 oct on stock fuel system.

I've only driven the car to work and back but was able to go WOT a few times and the JB4 has certainly done some learning. FF went from 70 as a starting point to 90.

Thanks in advance.
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Last edited by drwillb; 10-15-2018 at 06:58 AM..
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Default 08-31-2018, 08:40 AM

Quote:
Originally Posted by drwillb
I installed a PS1 last weekend and finally got some logs after reading up and switching to map 6 with custom targets. I forgot to get a snapshot of that screen but max boost is at 17psi from 3k to 5500 rpm then taper down to 15psi at 7k.

In addition to the turbo, I also put in new Bosch plugs and coils, boost solenoid, and DV+.

Car: 2012 e82 N55, CP, AD Engineering 650 intercooler, PE muffler, stock **, BMS filter, 93 oct on stock fuel system.

I've only driven the car to work and back but was able to go WOT a few times and the JB4 has certainly done some learning. FF went from 70 as a starting point to 90.

Thanks in advance.
Hey,

Overall boost looks pretty good

Some timing corrections across multiple cylinders, I imagine itís octane related. Could try throwing in 1-2 gal of e85 to see if it cleans up timing



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Default 08-31-2018, 08:51 AM

thanks for the quick response.

e85 is pretty much non-existent in north Jersey. I'll try some Shell instead of Valero or Speedway (ex-Hess) gas.

I did forget to re-gap the plugs to .022 when I installed them. Would pulling and re-gapping help with timing?
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Default 08-31-2018, 06:43 PM

Quote:
Originally Posted by drwillb
thanks for the quick response.

e85 is pretty much non-existent in north Jersey. I'll try some Shell instead of Valero or Speedway (ex-Hess) gas.

I did forget to re-gap the plugs to .022 when I installed them. Would pulling and re-gapping help with timing?
Letís try shell & yes, close that gap to .020 - .022



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Default 09-04-2018, 04:48 PM

I haven't gotten to the plugs yet but the JB4 is settling in nicely. I did change the boost targets on map 6 this morning and noticed a big spike in PWM that wasn't there before.

How's this looking? How quickly should I ramp up to my 17 psi target? I know that's conservative but I run pump 93 and I'm not looking to max anything out.
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Default 09-04-2018, 11:09 PM

Quote:
Originally Posted by drwillb
I haven't gotten to the plugs yet but the JB4 is settling in nicely. I did change the boost targets on map 6 this morning and noticed a big spike in PWM that wasn't there before.

How's this looking? How quickly should I ramp up to my 17 psi target? I know that's conservative but I run pump 93 and I'm not looking to max anything out.
Couple big issues to point out.

FP_H values look very poor
FP_L values also bad

AFR looks really lean, due to the poor fuel pressure on both end

Lastly, timing bottoms out on basically all cylinders



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Default 09-05-2018, 04:50 AM

Quote:
Originally Posted by Dave @ Fuel-it!
Couple big issues to point out.

FP_H values look very poor
FP_L values also bad

AFR looks really lean, due to the poor fuel pressure on both end

Lastly, timing bottoms out on basically all cylinders
Damn!! looks like the double pump chump.

I did a run this morning on map 1 and the HPFP was at 10, the LP was at 5.

I then looked at old logs and there has been a slow decline in pump output. Crazy thing is that the log I posted at the top on the OP shows the pumps are good. I probably got one last good pull out them.

So......what are the limits of the stock system (new pumps) at 18-19 psi with PS1 and 93 oct?

Last edited by drwillb; 09-05-2018 at 04:56 AM..
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Default 09-05-2018, 09:51 PM

Quote:
Originally Posted by drwillb
Damn!! looks like the double pump chump.

I did a run this morning on map 1 and the HPFP was at 10, the LP was at 5.

I then looked at old logs and there has been a slow decline in pump output. Crazy thing is that the log I posted at the top on the OP shows the pumps are good. I probably got one last good pull out them.

So......what are the limits of the stock system (new pumps) at 18-19 psi with PS1 and 93 oct?
A healthy stock HPFP should handle that no problem.

LPFP- Iíd suggest our stage 2 bucketless or 650 kit- shoot me a PM & we can get you setup.



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Default 09-13-2018, 11:04 AM

Here's a map 2 run from this morning. Could you please look at this one?

I think it all looks pretty decent but HPFP is at 8.

A couple of posts above you mentioned changing out the LPFP but what about the HP? My car is a 2012 e82 n55 so there's no LP data log.
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Default 09-16-2018, 02:11 PM

Quote:
Originally Posted by drwillb
Here's a map 2 run from this morning. Could you please look at this one?

I think it all looks pretty decent but HPFP is at 8.

A couple of posts above you mentioned changing out the LPFP but what about the HP? My car is a 2012 e82 n55 so there's no LP data log.
Correct no LPFP sensor

Hpfp seems to be pegged at 8 regardless-

Do u have another log



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Default 09-16-2018, 04:46 PM

I’ve got lunch gs going back over a year and there is a downward trend in HPFP. At one point it was at 11, then 10 and 9 for the last few months. Running at 8 is new.

HPFP looks like it’s going?

I’ve already looked at the DIY and it’s pretty straightforward.
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Default 09-16-2018, 07:00 PM

Quote:
Originally Posted by drwillb
Iíve got lunch gs going back over a year and there is a downward trend in HPFP. At one point it was at 11, then 10 and 9 for the last few months. Running at 8 is new.

HPFP looks like itís going?

Iíve already looked at the DIY and itís pretty straightforward.
Yeah Iíd replace if itís been a trend haha.

Pretty easy diy



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Default 09-17-2018, 05:35 PM

Am I looking at the wrong part? This looks like what I've seen on other sites but at a substantial savings.

BMW part # 13518604231


https://www.pelicanparts.com/cgi-bin...on=13518604231
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Default 09-18-2018, 11:02 AM

Quote:
Originally Posted by drwillb
Am I looking at the wrong part? This looks like what I've seen on other sites but at a substantial savings.

BMW part # 13518604231


https://www.pelicanparts.com/cgi-bin...on=13518604231
Tbh not 100% sure- id gross refernce with another site first.



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Default 09-18-2018, 11:06 AM

I did cross reference w/several vendors and RealOEM and they all match.

I took a chance and ordered since $98 is much less than $750. AND this is a factory part, not aftermarket.

Must have been an entry error on their end but the sale went through.

Got my fingers crossed.
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Default 09-19-2018, 04:43 AM



Website now shows $846 for the pump.
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Default 09-19-2018, 08:41 PM

Quote:
Originally Posted by drwillb


Website now shows $846 for the pump.
Did they ship????



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Default 09-20-2018, 04:37 AM

Still shows as scheduled to ship 9/24 with free shipping.
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Default 09-20-2018, 10:20 AM

Quote:
Originally Posted by drwillb
Still shows as scheduled to ship 9/24 with free shipping.
Thatís a win! Lol



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Default 09-22-2018, 03:47 AM

Package has shipped!!!

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Default 09-23-2018, 11:14 PM

Quote:
Originally Posted by drwillb
Package has shipped!!!

Win!



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Default 09-24-2018, 05:45 AM

going to get back on topic now.

I set one of the gauges on the BT app to show FP_H and I've been monitoring for a few days. It seems to be very variable. 2 days ago it was at 8 and wouldn't rise, it would even flicker down to 7. That was in the morning. In the afternoon, I was getting a solid 9. This morning, on startup, it was at 12 and later went to 11 but not lower.

I was starting to think fuel filter over the weekend and now I'm more convinced that's the route to take.

I ordered a fuel filter and stock LPFP yesterday. I'll throw those in first then see what happens with HP.
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Default 10-15-2018, 06:03 AM

I haven't gotten around to installing any of the new pumps or filter but I did make an interesting observation over the last couple of weeks.

FP_H seems to be linked to environmental temperature. When the temps were in the low 70s, I was running 7 or 8 for pressure. Sometimes, even dipping to 6. with temps in the high 60s, pressure ran at 8 or 9, somtimes 10. Temps at low 60s gave pressure of 9 or ten. You can see the trend. Two days ago, I was out before 7am and the temp was in the low 40s. This gave me a pressure of 12-13.

These readings weren't just for the first couple of minutes during warmup. The numbers hold for at least 20 minutes and then drop. Again, this is temp related. The colder it is outside, the longer the reading is stable and the less the pressure drop when it occurs.

Kinda makes me think this is low pressure pump related since the fuel temp would be a factor vs. engine block temp that would rise to a predictable and steady temp within a few minutes.
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Default 12-03-2018, 11:21 AM

Finally did the LPFP and pressure regulator this weekend.

Results: max HPFP is 12 but it does not drop below 9 now and HPFP will rise from 9 to 12 as needed, depending on demand/load.

Also, my AFR is not looking good. At WOT, I'll go into the 15s then drop into the 14s but not lower.

I'd say HPFP is due for replacement.
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