[PassiveDefect]

help me out. 2008 n54 FBO .my stft and afr are oscillating up and down driving.
https://datazap.me/u/azuleo/log-1575...ata=2-10-12-22

thinking it's a fuel issue. dunno whether to start with fuel pump or injectors

[R1CKSO]

Originally Posted by JM98

RFP got alot of hate because he started giving away tunes for free to promote himself a while back and the other tuners accused him of ripping off their maps.

Ive looked at his OTS stuff and its pretty standard, wouldn't worry about running his tunes. He's definitely more responsive than any of the other tuners on this platform if youre looking to go custom.

I loaded his stage 2 plus, I'm peaking at around 18 PSI, couldn't make a clean log for my life I was just going stupid fast (125 mph in sixth and around 5000 rpm) AFR's seem better than with MHD's and I feel the car is definetely faster than before altough not a fair comparison as I was running OTS MHD stage 2 with 93 oct, leaned like hell when I installed my FMIC and since then I reset LAMBDA adaptions and loaded RFPs stage 2+, this is a terrible and mostly useless log but if it can shed some light here it is.

https://datazap.me/u/r1ckso/rfps-sta...og=0&data=3-23

Just bought some E100 which I'll blend to make E40 and I'll try his E40 map, this is my first time ever using ethanol blends so I'm a little scared and hit the dyno next week to see whats what.

[N54rsenal]

Need to figure out whats wrong with my car doing a MHD custom tune with wedge
2010 335iA M Sport 80k FBO Inlet/Outlet, Walbro 450 LPFP, New PR Coils and NGK 91784 plugs gap .020"
E50 tuning up to 20psi. Did a compression test all cylinders are 175-180psi.

Issue is my car is still having cylinder 6 misfire, looking at my logs it shows my HPFP dips between the mid and upper rpms also in part throttle its dropping. I even swapped injector 6 with 1 and installed new seals, no change in misfire/superknocking location.

Possibly my HPFP can't handle E50 or its failing or my injectors aren't flowing well. Maybe I should run MHD S2+ again on 93 to clean them if they gummed up?

https://dannysengineportal.com/fuel-injectors/
I feel these symptoms below
Poor performance
Engine does not reach full RPM under boost/load
Surging and bucking under various throttle loads

https://datazap.me/u/n54rsenal

[eastsidaz]

Originally Posted by N54rsenal

Need to figure out whats wrong with my car doing a MHD custom tune with wedge
2010 335iA M Sport 80k FBO Inlet/Outlet, Walbro 450 LPFP, New PR Coils and NGK 91784 plugs gap .020"
E50 tuning up to 20psi. Did a compression test all cylinders are 175-180psi.

Issue is my car is still having cylinder 6 misfire, looking at my logs it shows my HPFP dips between the mid and upper rpms also in part throttle its dropping. I even swapped injector 6 with 1 and installed new seals, no change in misfire/superknocking location.

Possibly my HPFP can't handle E50 or its failing or my injectors aren't flowing well. Maybe I should run MHD S2+ again on 93 to clean them if they gummed up?

https://dannysengineportal.com/fuel-injectors/
I feel these symptoms below
Poor performance
Engine does not reach full RPM under boost/load
Surging and bucking under various throttle loads

https://datazap.me/u/n54rsenal

Weird! Running super rich and fuel trims are trying to add even more in. Even after you let off accel pedal its still dumping fuel in. Injectors getting stuck open possibly.
Dont know but i'm sure its happened to others here.

[dpaul]

Originally Posted by Alt_Blue

4 logs one the new 8.1 stage 2 map.

https://datazap.me/u/jevenson123/200...og=0&data=3-22
https://datazap.me/u/jevenson123/200...og=0&data=3-22
https://datazap.me/u/jevenson123/200...og=0&data=3-22
https://datazap.me/u/jevenson123/200...og=0&data=3-22

Mods are catless downpipes, VRSF CP with stock DV's, and DCI's.

My main concern so far is that target boost doesn't make it to even 16 psi. Supposedly this map should peak around 18 psi. Actual load looks like it's meeting requested load, however, so I'm not sure if there is actually an issue here.

I also see fairly consistent timing corrections around 5.5k rpm. Any review or additional insight would be appreciated.

Timing is poor with corrections in all cylinders as you note. You likely just need octane. If you're not using 93, use it. If you are, add a couple of gallons of E85 to the tank.

You're also showing nearly 60o rise in IAT. You need an intercooler upgrade.

[RoughKnight]

Arm Dp, aa 5inch fc, synapse bov

Stage 2+

Still getting throttle closures in 4th, and my random drive around town corrections are -4/5 on every cylinder.

Too aggressive? I have boost solinoids and a oil change going in next week, what gives? Any input is appreciated!!

https://datazap.me/u/roughknight/fir...&data=3-21

[BM3Rrrr]

Originally Posted by RoughKnight

Arm Dp, aa 5inch fc, synapse bov

Stage 2+

Still getting throttle closures in 4th, and my random drive around town corrections are -4/5 on every cylinder.

Too aggressive? I have boost solinoids and a oil change going in next week, what gives? Any input is appreciated!!

https://datazap.me/u/roughknight/fir...og=0&data=3-21

Try V7 2+ and see if it clears up the throttle closures, it did for me. Or get a custom map.
+47 deg C increase in IAT's....that intercooler is terrible

[RoughKnight]

Originally Posted by BM3Rrrr

Try V7 2+ and see if it clears up the throttle closures, it did for me. Or get a custom map.
+47 deg C increase in IAT's....that intercooler is terrible

Yea, it's a nice upgrade from stock but still pulls IAT at higher speeds, I might try the S2 map instead and see if that fixes the issues a bit

[kaiv]

Hey all.

New to the platform and learning.

N55 running OTS MHD stage 2+ 91ACN. 2 pulls.

How do things look? Are those timing corrections something to worry about? Car feels awesome.

https://datazap.me/u/kaiv/pulls?log=0&data=3-12-19-22

Thanks!

[RoughKnight]

Originally Posted by kaiv

Hey all.

New to the platform and learning.

N55 running OTS MHD stage 2+ 91ACN. 2 pulls.

How do things look? Are those timing corrections something to worry about? Car feels awesome.

https://datazap.me/u/kaiv/pulls?log=0&data=3-12-19-22

Thanks!

You're missing your boost target and load target by quite a bit, but no throttle closures and wdgc seems fine... anybody else chime in?

[Dr777]

Hey guys recently did another run after updating to mhd v8.1 on stage 1+
i know my intercooler is a major bottleneck right now so i did this run when it was a bit colder out.
anyways i got a over boost code during this run and also noticed that my boost was above target boost. i haven't messed with the wastegates or anything. the only thing i tinkered with was one of the diverter valves cause it popped out (wasnt tightened all the way lol) anyways was wondering if anyone else was experiencing this on the same version or if its only on my end

https://datazap.me/u/dr777/3rd-gear-...ta=2-3-4-14-22

[R1CKSO]

Originally Posted by Dr777

Hey guys recently did another run after updating to mhd v8.1 on stage 1+
i know my intercooler is a major bottleneck right now so i did this run when it was a bit colder out.
anyways i got a over boost code during this run and also noticed that my boost was above target boost. i haven't messed with the wastegates or anything. the only thing i tinkered with was one of the diverter valves cause it popped out (wasnt tightened all the way lol) anyways was wondering if anyone else was experiencing this on the same version or if its only on my end

https://datazap.me/u/dr777/3rd-gear-...ta=2-3-4-14-22

I'm not an expert, and only have a few weeks with logging and changing tunes so please take my opinion with a grain of salt, looking at your log it seems ok regarding AFR's and fuel pressures, IAT graph looks like a ladder climbing too fast, I didn't want to beleive how bad the stock IC is and that my eBay IC would make too much difference but if you look at my thread you can see its a night and day difference, also you are having timing corrections on all cylinders at different stages of the pull, so probably ignition system is not on par, or octane is not enough, you are definitely overboosting specially on higher RPM's, my take is that the + maps are designed with an upgraded IC in mind therefore they account for the boost drop when using an aftermarket intercooler and hence you using the smaller stock one you are moving more air than expected. Also seems like too many people are having problems with 8.1 maps, I think your best bet is to use the 7.1 stage 1 map and see if the problem still persists, if so then I would check the routing on all the vaccum lines, specially to confirm if all is correct on the solenoids, and replace all the lines while you are there, if that doesn´t work then solenoids or actuators or both are bad.

[BM3Rrrr]

Originally Posted by Dr777

Hey guys recently did another run after updating to mhd v8.1 on stage 1+
i know my intercooler is a major bottleneck right now so i did this run when it was a bit colder out.
anyways i got a over boost code during this run and also noticed that my boost was above target boost. i haven't messed with the wastegates or anything. the only thing i tinkered with was one of the diverter valves cause it popped out (wasnt tightened all the way lol) anyways was wondering if anyone else was experiencing this on the same version or if its only on my end

https://datazap.me/u/dr777/3rd-gear-...ta=2-3-4-14-22

Keep an eye on the LPFP pressure as well, seems to be close to 50psi. Could be time for a new one

[924er]

Take a look at my logs, they look OK to me. Im running super conservative stage 2+ 91 ACN using 91 octane in socal. its my daily. Doesn't feel that fast but feels smooth.

https://datazap.me/u/moswissa/stage-...-6-7-8-9-10-20

https://datazap.me/u/moswissa/log-15...-6-7-8-9-10-20


Thanks in advance

[studio54]

Just tried 8.1 maps (stage 2+ 93oct) tonight with a full 3rd to full 4th gear, i got some weirds things. It was feeling it pulls good but after looking at the log, i am a bit worried :

Timings corrections on all cylinders
Over boosting during all the pull
Throttle position acting weird, like going 81 flat during the 3rd gear, then went to ~40 during 4th gear, and go back to 81 from 6000rpm to 6300rpm (end of the pull)
Fuel mode switch from 2 (normal mode) to 6 (cat protection mode) after shifting to 4th (maybe it explains the throttle position)

Probably too agressive for my fuel

I will switch back to 7.1 map and see if it does the same thing.

Anyone else ?

https://datazap.me/u/studio54/log-15...a=3-5-13-21-25

[BM3Rrrr]

Originally Posted by 924er

Take a look at my logs, they look OK to me. Im running super conservative stage 2+ 91 ACN using 91 octane in socal. its my daily. Doesn't feel that fast but feels smooth.

https://datazap.me/u/moswissa/stage-...-6-7-8-9-10-20

https://datazap.me/u/moswissa/log-15...-6-7-8-9-10-20


Thanks in advance

Try going full throttle? Your first log shows your accel peddle pos not at max.
Are you logging with traction control off?

[Dr777]

Originally Posted by BM3Rrrr

Keep an eye on the LPFP pressure as well, seems to be close to 50psi. Could be time for a new one

Thanks for pointing that out it does look pretty weak

[BM3Rrrr]

Originally Posted by studio54

Just tried 8.1 maps (stage 2+ 93oct) tonight with a full 3rd to full 4th gear, i got some weirds things. It was feeling it pulls good but after looking at the log, i am a bit worried :

Timings corrections on all cylinders
Over boosting during all the pull
Throttle position acting weird, like going 81 flat during the 3rd gear, then went to ~40 during 4th gear, and go back to 81 from 6000rpm to 6300rpm (end of the pull)
Fuel mode switch from 2 (normal mode) to 6 (cat protection mode) after shifting to 4th (maybe it explains the throttle position)

Probably too agressive for my fuel

I will switch back to 7.1 map and see if it does the same thing.

Anyone else ?

https://datazap.me/u/studio54/log-15...a=3-5-13-21-25

Yep too aggressive for your fuel, add some E85 or switch to 91 octane map
Throttle closures are caused by the overboosting, its normal but try V7 as I had the same issue with V8 and switching to V7 cleared it up

[924er]

Originally Posted by BM3Rrrr

Try going full throttle? Your first log shows your accel peddle pos not at max.
Are you logging with traction control off?

I thought I was full throttle lol but how does it look? Traction was off for sure .

FWIW, I kept up with a 5.0 this evening, which doesn't make sense at all. Maybe the driver sucked

[studio54]

Originally Posted by BM3Rrrr

Yep too aggressive for your fuel, add some E85 or switch to 91 octane map
Throttle closures are caused by the overboosting, its normal but try V7 as I had the same issue with V8 and switching to V7 cleared it up

Yes, i will try 8.1 91oct for the next log. (Too bad MHD did not implemented a tickbox in the options for the throttle correction with the agressive settings, so we can have this on 7.1 too.)

With 7.1 map, I already had some throttle closures when boost mean exceeds a bit the target , but this one on the 8.1 looks not usual, it's not small throttle closure spikes, but more like a long throttle closure that lasts 1000 rpms (on my log).

Otherwise i did not find a lot of info about the fuel mode 6 because in most log people are not logging this.

[Sgop335]

Originally Posted by studio54

Yes, i will try 8.1 91oct for the next log. (Too bad MHD did not implemented a tickbox in the options for the throttle correction with the agressive settings, so we can have this on 7.1 too.)

With 7.1 map, I already had some throttle closures when boost mean exceeds a bit the target , but this one on the 8.1 looks not usual, it's not small throttle closure spikes, but more like a long throttle closure that lasts 1000 rpms (on my log).

Otherwise i did not find a lot of info about the fuel mode 6 because in most log people are not logging this.

yea like I mentioned earlier, lot of overboosting etc. I thought you were making your own bin?

[studio54]

Originally Posted by Sgop335

yea like I mentioned earlier, lot of overboosting etc. I thought you were making your own bin?

Did not pull the trigger yet (started to make it then not finished for the moment)