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Showing results 1 to 25 of 96 Search: Posts Made By: yellowfin
Forum: N54 12-07-2019, 11:10 AM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
With white sub connector left in place, jb4...

With white sub connector left in place, jb4 controls boost, no need to worry about wgdc
I got 30fe before adjusting the load torque tables because jb4 target was higher than dme at low load, there...
Forum: N54 12-03-2019, 07:46 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
I am a firm believer in matching jb4 and dme...

I am a firm believer in matching jb4 and dme targets, to the point that I am often on menu 4/4 (jb4 boost control with dme targets). Couple of considerations:

- in addition to the load target...
Forum: Support & Log Review 12-03-2019, 07:23 PM
Replies: 15
Views: 1,819
Posted By yellowfin
I had misfires around 90k miles, got new O...

I had misfires around 90k miles, got new O sensors (precat) and they went away. Not high rpm though, more like during cruise iirc.
Forum: N54 08-02-2019, 05:01 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
In MHD, "backend flash" is for the cheaper JB4...

In MHD, "backend flash" is for the cheaper JB4 license. In this case, there is a WGDC limit set when flashing. With JB4, it does not matter, because JB4 overrides the WGDC tables anyways. For "custom...
Forum: Support & Log Review 07-28-2019, 11:56 AM
Replies: 6
Views: 1,935
Posted By yellowfin
It's always possible to optimize boost/load...

It's always possible to optimize boost/load targets and bef (timing, fuel scalar, afr) for e85 on stock hpfp. Up to 15 psi or so should be possible, I guess. Of course, max power is less than, say,...
Forum: N54 07-20-2019, 06:58 PM
Replies: 10
Views: 2,892
Posted By yellowfin
Oh, boy. Av ign goes up to 1. Not much, but I...

Oh, boy. Av ign goes up to 1. Not much, but I have not seen above anything other than 0.0 already with E50. Bad fuel could explain timing corrections (also ign 1,2), but even so, hpfp dips to 5,...
Forum: N54 07-18-2019, 06:20 PM
Replies: 10
Views: 2,892
Posted By yellowfin
Yes, multiply by 10 for load. Now that I...

Yes, multiply by 10 for load.
Now that I double checked, it does not say so on the logging parameters page
https://www.n54tech.com/forums/showthread.php?t=21269
Forum: N54 07-17-2019, 10:58 PM
Replies: 10
Views: 2,892
Posted By yellowfin
I think E50 is the sweet spot for stock DI. I...

I think E50 is the sweet spot for stock DI. I just replaced my 1st gen hpfp (2007 vintage). It did have a few hiccups now and then, but notably not necessarily at the highest boost levels, and often...
Forum: N54 07-10-2019, 05:07 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
The pump flash has a slightly increased fuel...

The pump flash has a slightly increased fuel scalar and should be good for a few gallons E85. The E85 flash is more for half tank E85 and up. When driving with wrong bef/fuel combination for a few...
Forum: N54 07-09-2019, 10:03 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
Fuel-it has good lpfp options. Depending on the...

Fuel-it has good lpfp options. Depending on the age of the car, I'd suggest to do the fuel filter/ pressure regulator (driver side) at the same time, so you have to deal with the pita clip only once...
Forum: N54 07-09-2019, 09:13 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
Ok, so I made finally some progress. In the...

Ok, so I made finally some progress. In the process, I tested god knows how many tables, and I came across the very nice youtube channel of RFP, who offers a crash course in tuning...
Forum: N54 07-07-2019, 06:38 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
Thanks for the feedback! Yes, sure, I have the...

Thanks for the feedback! Yes, sure, I have the N20 3.5 bar sensor, this one is a nobrainer.

I totally agree on the timing, I have about 12 degrees as well at 20 psi with E50. Optimal timing...
Forum: N54 07-03-2019, 07:12 AM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
MHD JB4 license boost ceiling

I asked MHD, the only restriction for the backend flash should be the wgdc tables (since boost is controlled by jb4), so no need for mboost option with the jb4 license, which is nice.

Still no...
Forum: N54 06-26-2019, 07:05 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
@suni335 I don't think the pump BEF on map 1...

@suni335
I don't think the pump BEF on map 1 will give much performance gain, if any. The most benefits of BEF come in when you use better fuel and higher maps (fuel scalar, timing). If I remember...
Forum: N54 06-25-2019, 08:21 PM
Replies: 4,076
Views: 2,026,480
Posted By yellowfin
MHD JB4 license boost ceiling

I am trying to match JB4 and BEF boost targets up to 21-22 psi, and later maybe go menu 4/4. However, I canít seem to get the DME_BT above 18.7 (boost ceiling, load target, load-torque tables via...
Forum: N54 04-29-2018, 11:15 PM
Replies: 21
Views: 8,950
Posted By yellowfin
I'd still like to be able to set max for dash...

I'd still like to be able to set max for dash gauge.
Forum: N55 04-01-2018, 07:47 PM
Replies: 73
Views: 41,941
Posted By yellowfin
For anecdotal reference: Have a stage 2 lpfp and...

For anecdotal reference: Have a stage 2 lpfp and changed from ekpm2 to ekpm3 (7276046, I did not code or anything, car seems to be running fine). With ekpm3, but not with my old ekpm2, I get 2AAE...
Forum: N54 03-31-2018, 04:08 PM
Replies: 12
Views: 5,339
Posted By yellowfin
I got a used EKPM3 on ebay, but when I put it in...

I got a used EKPM3 on ebay, but when I put it in I get 2AAE. I guess needs to be coded? Can I drive around with it before coding?
Forum: N54 01-30-2018, 06:48 PM
Replies: 5
Views: 2,019
Posted By yellowfin
I could not find much info about how av ign is...

I could not find much info about how av ign is calculated. Would be interested. Couple of considerations:
Fuel octane will affect timing most directly via DME monitoring knock sensors.
Do you have...
Forum: N54 01-26-2018, 05:00 PM
Replies: 7
Views: 3,483
Posted By yellowfin
I got a 2C3E once that was maybe related, but not...

I got a 2C3E once that was maybe related, but not together with the misfires.
Forum: N54 01-20-2018, 11:01 PM
Replies: 7
Views: 3,483
Posted By yellowfin
Misfires can have any number of reasons, but...

Misfires can have any number of reasons, but definitively can be O2's. I had misfires around 90k miles that went away after I did new sensors (primary only). I think I had also a jb4 lean safety...
Forum: N54 01-11-2018, 05:29 PM
Replies: 12
Views: 5,339
Posted By yellowfin
EKPM3 and lpfp/filter

Steve, is there any way to know in advance if coding is needed? Just put it in and if car runs it's OK?

OP, I'd recommend lpfp ugrade and filter at the same time, once you're in there. I have a...
Forum: Support & Log Review 12-09-2017, 08:58 PM
Replies: 165
Views: 189,019
Posted By yellowfin
FF learning details

Terry, thanks for the info.

Attached is a log. I was starting around 4000 rpm and was a bit surprised to see WGDC at 100% all the way up to 4500 rpm, whereas the max spool rpm in the bef is only...
Forum: N54 11-22-2017, 11:52 PM
Replies: 13
Views: 4,200
Posted By yellowfin
When installing the VTT outlets, we were cutting...

When installing the VTT outlets, we were cutting piece by piece, turbo and IC side, until we got a good fit. In the end, there came off a LOT!
Forum: N54 11-14-2017, 10:32 PM
Replies: 31
Views: 9,075
Posted By yellowfin
My speedo is almost 10% fast, by comparison to...

My speedo is almost 10% fast, by comparison to roadside speed signs that match readings of other cars (VW, Dodge). Is this true for all BMWs?

Why would they switch off traction/stability control?
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