[extreme-eg]

Originally Posted by SONO_N54

http://datazap.me/u/closed24x7/mhd-v...15-18-19-23-24

Please look at these logs. I've been hunting down a few issues and making progress and I've also been finding more in different areas of concern. Just curious what someones conclusions would be.

Looks like your LPFP is struggling to keep up with the demand of E40 as lpfp pressure dips as low as 39 psi at 5087 rpm. I also notice a large discrepancy between STFT1 and STFT2 (a delta of 13% at one point) which may mean you have an injector on bank 1 that is bad.

This could also be causing the drops in lpfp fuel pressure as the other injectors are run harder to try bring AFR inline on Bank 1.

Ign, IAT, boost, WGDC and AFR look on track...

I appear to be having similar STFT issues (fuel being pulled) as well; more so in Bank 1 than Bank 2. All other fuel values are in check though:

- HPFP and Stage 2 LPFP have ~2k miles on them
- (6) Brand new index 12 injectors installed ~1k miles ago
- Fuel/Lambda adaptations reset 3 days ago

Running E20/93 on this 93 map to clean up timing; this run is with full traction control ON *oops*
http://datazap.me/u/fcobra94/log-147...&data=23-24-25

[SONO_N54]

Originally Posted by extreme-eg

Looks like your LPFP is struggling to keep up with the demand of E40 as lpfp pressure dips as low as 39 psi at 5087 rpm. I also notice a large discrepancy between STFT1 and STFT2 (a delta of 13% at one point) which may mean you have an injector on bank 1 that is bad.

This could also be causing the drops in lpfp fuel pressure as the other injectors are run harder to try bring AFR inline on Bank 1.

Ign, IAT, boost, WGDC and AFR look on track...

You mean an injector that potentially isn't flowing properly opposed to a leaky injector, right?

[Torgus]

Originally Posted by zero2sixtyZ

First proper log here: http://www.datazap.me/u/zero2sixtyz/...=0&data=4-6-23

Not matching boost targets in higher RPM range... boost leak?

07 6MT, VRSF charge pipe w/ Tial, catless DPs, and stepped 5" FMIC, running v6.1 stage 2 93oct.

Your log looks almost as shitty as mine ;(

http://datazap.me/u/torgus/log-14720...data=4-6-14-21

30FF FTL

[Nonecure]

Originally Posted by Torgus

Your log looks almost as shitty as mine ;(

http://datazap.me/u/torgus/log-14720...data=4-6-14-21

30FF FTL

Looks like you have a leaky injector in bank 1, besides your boost leak.

[Torgus]

Originally Posted by Nonecure

Looks like you have a leaky injector in bank 1, besides your boost leak.

How can you tell the injector is leaking out of curiosity? I just did NGK 5992 plugs and delphi coilpacks and non of the old plugs looked black or wet...I thought those were the physical signs?

My hope is when I replace my vacuum lines next week that will fix my issue regarding the boost leak. I'm doing inlets and outlets and figured that is the easiest time for the hoses.

Thanks for you help.

edit: I know I can change 1 injector at a time and I have 5 spare. I just wonder if I should just do all 6 and be done with it. AFAIK they are all original.

[Anend_E90]

v7.1 93 Stage 1+ log: http://datazap.me/u/rhamm/log-147205...og=0&data=4-24

335xi, FMIC only - I just did injectors recently. Plugs and coils about ~5k ago

I'm running 92 octane blended with E85, 94 octane on the dot - still getting some timing corrections it seems.

[Shane303]

Originally Posted by Anend_E90

v7.1 93 Stage 1+ log: http://datazap.me/u/rhamm/log-147205...og=0&data=4-24

335xi, FMIC only - I just did injectors recently. Plugs and coils about ~5k ago

I'm running 92 octane blended with E85, 94 octane on the dot - still getting some timing corrections it seems.

Does the car have an automatic transmission? DME IJEOS?
Fuel trims are going crazy....

[Anend_E90]

Originally Posted by Shane303

Does the car have an automatic transmission? DME IJEOS?
Fuel trims are going crazy....

Yeah - Auto, quick note - it is a little funky of a log, I had a straight where I could downshift and get on it, I don't think I was at 100% throttle til early 4k area

[TrollToll]

Originally Posted by Torgus

How can you tell the injector is leaking out of curiosity?
.......
Thanks for you help.

I have never heard of an injector leaking "out of curiosity". I think they usually leak when they're failing.

[Torgus]

Originally Posted by Yournamehere90

I have never heard of an injector leaking "out of curiosity". I think they usually leak when they're failing.

Is that how it works?

[Shane303]

Originally Posted by Anend_E90

Yeah - Auto, quick note - it is a little funky of a log, I had a straight where I could downshift and get on it, I don't think I was at 100% throttle til early 4k area

With the automatic and the IJEOS DME, you will have to get a custom tune and/or desensitize the knock sensors(do NOT recommend) to eliminate the post shift timing issue.

[Anend_E90]

Originally Posted by Shane303

With the automatic and the IJEOS DME, you will have to get a custom tune and/or desensitize the knock sensors(do NOT recommend) to eliminate the post shift timing issue.

Interesting, what can occur with the post shift timing issues? I didn't feel anything strange when doing the log

[ATLIEN]

Originally Posted by ATLIEN

Check this one out.

http://www.datazap.me/u/gsi00154/log...og=0&data=4-24

MHD Stage 1 FMIC.

Anyone?

[Banana Clipper]

Originally Posted by ATLIEN

Anyone?

I'm a newb at best reading logs but I'll tell you from what I know its not an 'ideal' log. You started logging too high in the rpms and you took quite some time to go WOT and you didnt stay WOT

[gxmac]

http://www.datazap.me/u/gxmac413/log...og=0&data=4-22

Can I get some feedback on this log? I'm FBO + inlets + fuel-it stage 1 LPFP running 40% e85.

Thanks.

[Shane303]

Originally Posted by gxmac

http://www.datazap.me/u/gxmac413/log...og=0&data=4-22

Can I get some feedback on this log? I'm FBO + inlets + fuel-it stage 1 LPFP running 40% e85.

Thanks.

Your LPFP is taking your HPFP into the "red" zone. What is your ethanol content?

Everything else looks really good.

[gxmac]

Originally Posted by Shane303

Your LPFP is taking your HPFP into the "red" zone. What is your ethanol content?

Everything else looks really good.

About 45%

Originally Posted by gxmac

http://www.datazap.me/u/gxmac413/log...og=0&data=4-22

Can I get some feedback on this log? I'm FBO + inlets + fuel-it stage 1 LPFP running 40% e85.

Originally Posted by Shane303

Your LPFP is taking your HPFP into the "red" zone. What is your ethanol content?

Everything else looks really good.

Hmm, someone posted a very similar log yesterday.

Dumb question; when the LPFP starts to take a dive here, why do the STFTs continue to stay negative? Shouldn't they go positive (add more fuel) at that point? I guess as long as they're still meeting their targets, it shouldn't make a difference.

[Shane303]

Originally Posted by FCobra94

Hmm, someone posted a very similar log yesterday.

Dumb question; when the LPFP starts to take a dive here, why do the STFTs continue to stay negative? Shouldn't they go positive (add more fuel) at that point? I guess as long as they're still meeting their targets, it shouldn't make a difference.

Air fuel ratios(lambda) were still being met so the trims were not manipulated.

[ccourteau82]

I originally posted this in the MHD - General Discussion thread but this may have been the better place for it...

Well here is another e40 v7.1 log for a FBO MT 335i:

http://www.datazap.me/u/ccourteau82/...og=0&data=4-22

I waited 3 days to take the log, not sure if that was enough time to let the car fully adjust but the car looks very happy to me based on my limited knowledge of analyzing logs.

First impressions are that the e40 v7.1 map has much better driveability or is more linear in nature (yes I always select the linear throttle option) but does give up quite a bit of mid range torque and power to a lesser extend. That being said, I personally find it much more enjoyable for daily driving but if I were to drag race anyone, rolling or dig, I would most certainly be switching back to the v5.1. Would be nice to get this level of driveability/linear response with the all power and mid-range torque of the v5.1 map; not sure if that is even possible but I have to ask. I hate the idea of leaving power on the table

For those interested, here is a picture of virtual dyno with with the 4 previous v5.1 logs overlayed on top of the above linked v7.1 map.

Relevant Mod List: MHD E40 FBO v7.1 | VRSF Inlets | VRSF FMIC | VRSF DP | ER CP w/ Tial BOV | WALBORO Inline 255 | NGK 5992 | 335is/550i Clutch Kit

[bpdef29]

Originally Posted by ccourteau82

First impressions are that the e40 v7.1 map has much better driveability or is more linear in nature (yes I always select the linear throttle option) but does give up quite a bit of mid range torque and power to a lesser extend. That being said, I personally find it much more enjoyable for daily driving but if I were to drag race anyone, rolling or dig, I would most certainly be switching back to the v5.1. Would be nice to get this level of driveability/linear response with the all power and mid-range torque of the v5.1 map; not sure if that is even possible but I have to ask. I hate the idea of leaving power on the table
t

Yeah, that's pretty surprising how much less boost you're making on the new map compared to the other logs you had loaded on VD.

Edit: those old boost curves do look pretty damn aggressive though at ~20 psi. Not sure I'd want to run that anyways personally.