[Chapperss]

Saif2018 ahh ffs, I can be so basic sometimes.... I did remap the car whilst at the petrol station, because they were out of Momentum, so that`s my excuse....

Will chuck a 95ron map on it in the morn.

In an attempt to increase my ability to read these things - Where are you seeing the throttle closures skip (is it the throttle position data)?

[Saif2018]

Originally Posted by Chapperss

Saif2018 ahh ffs, I can be so basic sometimes.... I did remap the car whilst at the petrol station, because they were out of Momentum, so that`s my excuse....

Will chuck a 95ron map on it in the morn.

In an attempt to increase my ability to read these things - Where are you seeing the throttle closures skip (is it the throttle position data)?

Haha lol easily done mate, no worries, chuck in V power or Momentum and flash 98ron map when you can

If you scroll down the parameters and select Throttle, you'll be able to see the dips in throttle throughout the pull, yes it's the throttle position, should be pinned at 81 throughout the pull, might have minor dips but those were pretty big ones in that log. Probably a good idea to drive for a couple of days doing a few pulls here and there for adaptations to set before logging though.

[Dave92N54]

Working on some revisions with my tuner tonight. Just figured i'd share one of the logs from tonight. Everything looks pretty good, just some dialing in left.

https://datazap.me/u/e92dave/log-164...&data=3-21


Edit: https://datazap.me/u/e92dave/chefs-kiss?log=0&data=3-21

Final revision. Car feels phenomenal.

[jayntguru]

Howdy all, long time reader first time poster.

I'm still newish to the platform and I'm still learning what good logs vs bad logs look like so I could use some guidance.

This is the car with MHD stage 1+, DCI, charge and 5" stepped IC. AFAICT this one looks good.

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

This is the car with the stage 1+ tune, same mods as above and catless DP's. It looks lean to me and is pulling some timing.

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

Because I didn't look at the above log hard enough I flashed stage 2+, mods all the same. This looks very lean to me. (Like.. I shouldn't be boosting it like this.)

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

What I do find confusing is every few pulls or so the AFR's look OK (but it's still pulling some timing.).

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

Any ideas? This did start as soon as I swapped the DP's. The car is an 09 n54. With good maintenance (no oil leaks) and decent injectors. No codes. Drives just fine.

Any input is greatly appreciated.

[Dave92N54]

Originally Posted by jayntguru

Howdy all, long time reader first time poster.

I'm still newish to the platform and I'm still learning what good logs vs bad logs look like so I could use some guidance.

This is the car with MHD stage 1+, DCI, charge and 5" stepped IC. AFAICT this one looks good.

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

This is the car with the stage 1+ tune, same mods as above and catless DP's. It looks lean to me and is pulling some timing.

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

Because I didn't look at the above log hard enough I flashed stage 2+, mods all the same. This looks very lean to me. (Like.. I shouldn't be boosting it like this.)

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

What I do find confusing is every few pulls or so the AFR's look OK (but it's still pulling some timing.).

https://datazap.me/u/jayntguru/stage...ata=3-15-16-22

Any ideas? This did start as soon as I swapped the DP's. The car is an 09 n54. With good maintenance (no oil leaks) and decent injectors. No codes. Drives just fine.

Any input is greatly appreciated.

Not lean at all, you're AFRs are pretty much perfect. If you were running lean your STFTs would be sky high (they max at +/-34%) but yours are pretty much perfect. At redline you want to be around low 12s or high 11s, either is fine. Some cars run a little leaner or richer, just the way it is. Sometimes even the same car will run a little leaner or richer but for the most part if you're not maxing out your fuel trims, you will be A-okay.

The issue is your timing corrections, which are even present in your first log. Your IATs are fine so they're not the cause. That pretty much means it's your spark plugs or you have shit fuel. Fuel is easy enough to test, just add an octane booster or fill up elsewhere but based on my experience, i'd guess these are plug related. What spark plugs are you running, and at what gap?

[thisisnotozzy]

First time posting. Got my 08 e93 335i in October of 2021. Currently sitting FBO mhd v10 stage 2+on 93octane

I believe the clutch is on its way as its slipping in higher gears at WOT. I managed to grab a log before it started to slip in lower gears. I'm a complete novice and this is my first time really tinkering with a car.

https://datazap.me/u/thisisnotozzy/s...3&mark=72&hg=3

I'm just wondering if everything looks healthy from what can be seen on a log. Are the few timing corrections (I think I see..lol) something I should be trying to get to the bottom of? The throttle closures at peak boost an item of concern?

This anxious novice sends thanks for any insight.

[Saif2018]

Originally Posted by Dave92N54

Not lean at all, you're AFRs are pretty much perfect. If you were running lean your STFTs would be sky high (they max at +/-34%) but yours are pretty much perfect. At redline you want to be around low 12s or high 11s, either is fine. Some cars run a little leaner or richer, just the way it is. Sometimes even the same car will run a little leaner or richer but for the most part if you're not maxing out your fuel trims, you will be A-okay.

The issue is your timing corrections, which are even present in your first log. Your IATs are fine so they're not the cause. That pretty much means it's your spark plugs or you have shit fuel. Fuel is easy enough to test, just add an octane booster or fill up elsewhere but based on my experience, i'd guess these are plug related. What spark plugs are you running, and at what gap?

Looks like most people seem to be getting those weird throttle closures,
I got the same when I tried v10 maps,

Accelerator position seems maxed out but throttle is all over the place.

[Saif2018]

https://datazap.me/u/shelim2020/v6-j...-9-10-13-23-29

Just did this log a few days ago, I already have another revision V7(which should be little bit more richer) , just haven't had time to flash and log due to work.

I tried V10 stage 1+, it was good but the throttle was all over the place for me, felt like there was not much power than sudden full throttle on WOT, just too unstable so I switched back to my custom tune. This v6 custom map is a little bit laggy at bottom end of the rpm (takes about 600rpm to reach boost target) but power is maintained throughout most of the rpm and feels stronger at top end too so it'll do.

[jayntguru]

Originally Posted by Dave92N54

Not lean at all, you're AFRs are pretty much perfect.

Great info. Thank you.

Originally Posted by Dave92N54

The issue is your timing corrections, which are even present in your first log. Your IATs are fine so they're not the cause. That pretty much means it's your spark plugs or you have shit fuel. Fuel is easy enough to test, just add an octane booster or fill up elsewhere but based on my experience, i'd guess these are plug related. What spark plugs are you running, and at what gap?

Plugs have maybe 3000 miles and are the "one step colder" (NGK 97968) from FCP Euro. Gapped to .022 IIRC.

I will try some different gas/booster and pull the plugs and double check the gap.

Also I just went over a ton of logs (Now that I know what to look for - thank you). Basically almost no timing corrections until I switched to the V10 maps. May try going back to V9 and see how that does.

-Jay

[Chapperss]

Originally Posted by Saif2018

Looks like most people seem to be getting those weird throttle closures,
I got the same when I tried v10 maps,

Accelerator position seems maxed out but throttle is all over the place.

Yeah, mine hasn`t gone away even though i`m now running the right map for my fuel.

Quick side note about power delivery, did you play with the throttle lag settings (1M thingy)?

[Saif2018]

Originally Posted by Chapperss

Yeah, mine hasn`t gone away even though i`m now running the right map for my fuel.

Quick side note about power delivery, did you play with the throttle lag settings (1M thingy)?

Yeah I have the 1M throttle always at zero lag, for OTS maps, already had it on my custom map before MHD added it though.

My custom tune and previous V9 maps have consistent max throttle when Wide Open Throttle, for some reason v10 maps at least till stage 1+ has weird throttle closures.

[Dave92N54]

Originally Posted by Saif2018

Yeah I have the 1M throttle always at zero lag, for OTS maps, already had it on my custom map before MHD added it though.

My custom tune and previous V9 maps have consistent max throttle when go Wide Open Throttle, for some reason v10 maps at least till stage 1+ has weird throttle closures.

I'm fairly certain it's just boost control. If I had to guess they decided limiting boost making it's way into the intake via throttle closure resulted in faster times than reducing WGDC. I mean, at this point you'd have to imagine the OTS maps were pretty much perfect so to make them any faster they're probably resorting to "odd" means. Try logging boost mean (pressure in the charge pipe), i'd bet it's pretty high when this is happening. Probably bc it's faster to close the throttle than it is to dial the WGDC down and for pressure to decrease. Any of the throttle closures I've seen here are when they're overboosting a tad. As for overboosting I don't know why, you'd probably have to email MHD and see. Just my 2 cents, I'm certainly no tuner or expert.

[Chapperss]

Originally Posted by Dave92N54

I'm fairly certain it's just boost control. If I had to guess they decided limiting boost making it's way into the intake via throttle closure resulted in faster times than reducing WGDC. I mean, at this point you'd have to imagine the OTS maps were pretty much perfect so to make them any faster they're probably resorting to "odd" means. Try logging boost mean (pressure in the charge pipe), i'd bet it's pretty high when this is happening. Probably bc it's faster to close the throttle than it is to dial the WGDC down and for pressure to decrease. Any of the throttle closures I've seen here are when they're overboosting a tad. As for overboosting I don't know why, you'd probably have to email MHD and see. Just my 2 cents, I'm certainly no tuner or expert.

Your analysis may be correct. All of my closures are with over-boosting, even when it`s just a smidge over target.

I certainly don`t notice the closures when driving. Big question, whilst seemingly not desired, is it harmful? Seems silly to ask that about a safety measure..

[Dave92N54]

Originally Posted by Chapperss

Your analysis may be correct. All of my closures are with over-boosting, even when it`s just a smidge over target.

I certainly don`t notice the closures when driving. Big question, whilst seemingly not desired, is it harmful? Seems silly to ask that about a safety measure..

Nah shouldn't be harmful. You'd know if it were (trims, corrections, etc).

[Saif2018]

Agree with what Dave said, the throttle closures aren't noticeable under normal driving, felt like boost control wasn't smooth when I went WOT with DSC fully off at least from my butt dyno lol

Personally I don't like inconsistent throttle closures /overboosting etc, makes the car unpredictable when your pushing it hard. I guess the only way to sort that out is by custom tunes.

[Chapperss]

Originally Posted by Saif2018

Agree with what Dave said, the throttle closures aren't noticeable under normal driving, felt like boost control wasn't smooth when I went WOT with DSC fully off at least from my butt dyno lol

Personally I don't like inconsistent throttle closures /overboosting etc, makes the car unpredictable when your pushing it hard. I guess the only way to sort that out is by custom tunes.

I didn`t feel it in the pull from the recent log you looked at for me. I`m inclined to leave it as is as I personally find the power delivery smoother and more predictable than the v7 map.

Haven`t done a dsc off pull since then but will firmly engage my butt dyno to check next time I do

Trying to work out how long the closure was present for and cant work out how MHD is time column works. Is it just in seconds? e.g. I have closures(reduced throttle) from 228.077 till 228.35 so total time 0.273 seconds or just over a quarter of a second?

[Saif2018]

Originally Posted by Chapperss

I didn`t feel it in the pull from the recent log you looked at for me. I`m inclined to leave it as is as I personally find the power delivery smoother and more predictable than the v7 map.

Haven`t done a dsc off pull since then but will firmly engage my butt dyno to check next time I do

Trying to work out how long the closure was present for and cant work out how MHD is time column works. Is it just in seconds? e.g. I have closures(reduced throttle) from 228.077 till 228.35 so total time 0.273 seconds or just over a quarter of a second?

Haha lol, no worries, yeah it's probably something in the region of a 20th of sec.

I've just had a look at another log stage 1+ it looks Ken used the throttle closures to smooth out the WGDC.

[jayntguru]

I did a full 3rd gear pull earlier after no other changes than switching back to the v9 map vs the v10. The car feels better and the log looks much better to me.

https://datazap.me/u/jayntguru/stage...10-11-15-16-23

My original post with the V10 logs is here.

-Jay

[Dave92N54]

Originally Posted by jayntguru

I did a full 3rd gear pull earlier after no other changes than switching back to the v9 map vs the v10. The car feels better and the log looks much better to me.

https://datazap.me/u/jayntguru/stage...10-11-15-16-23

My original post with the V10 logs is here.

-Jay

Looks good

[mattypp]

Would anyone mind giving input on my throttle closures? I forgot to turn off DTC, could that be the cause?

https://datazap.me/u/matthew-pinola/...ata=3-12-24-27

[Saif2018]

Originally Posted by mattypp

Would anyone mind giving input on my throttle closures? I forgot to turn off DTC, could that be the cause?

https://datazap.me/u/matthew-pinola/...ata=3-12-24-27

Most likely, its normal to have throttle closures with DSC or DTC

Your IAT's rising pretty rapidly, probably due to your stock FMIC

[mattypp]

Originally Posted by Saif2018

Most likely, its normal to throttle closures with DSC or DTC

Your IAT's rising pretty rapidly, probably due to your stock FMIC

Thank you!!! I plan on getting a FMIC in the next round of mods.