[kmx]

First time post for a log, just swapped to stage 2+ and really wanted to log something to put the nerves at ease.

07 335i with FBO and VRSF stock location inlets. New NGK plugs and delphi coils and on 93 pump. I also have WG rattle fix almost maxed out so spool a little slower.

Looking at this im thinking i need to down grade to 91 map? Appreciate any feedback

Thanks in advance.

https://datazap.me/u/kmx/log-1511943...2-3-23-26&hg=3

[335e92tx]

Originally Posted by mfakhouri

Which parameters particularly?

lambda control.

[Blown95ImpalaSS]

just bumping this for some feedback, everything look OK on these 2 logs?

Originally Posted by Blown95ImpalaSS

v8 stage 2+ 91 oct, stock turbos with 129k miles on em:

https://datazap.me/u/blown95impalass...og=1&data=3-22

first one after inlets, coils plugs and bolt ons. feedback greatly appreciated

Originally Posted by Blown95ImpalaSS

just bumping this for some feedback, everything look OK on these 2 logs?

Heavy throttle closures due to boost overshoot. Have seen that in some other V8 logs, not sure what the deal is though.

[335e92tx]

Originally Posted by FCobra94

Heavy throttle closures due to boost overshoot. Have seen that in some other V8 logs, not sure what the deal is though.

feature.

[Blown95ImpalaSS]

Originally Posted by 335e92tx

feature.

can you explain for the noobs pls

[335e92tx]

Throttle closures are used more in V8 maps to 'keep boost up' and allow the OTS maps to work for a larger number of applications for varying ambient pressure (and for other reasons im sure).

That's all I am going to offer

PM one of these guys


WedgePerformance

MHD Tuning

[I6TT]

https://datazap.me/u/hazem3/log-1511...16-21-22-23-24

Obviously boost leak, but i never saw these timing correction before. Beta V8 E30 map.
Note, this is the first time i ran E85 in the car. 11gal of 93/ 5 gallons of e85
Please chime in.

[WedgePerformance]

Originally Posted by I6TT

https://datazap.me/u/hazem3/log-1511...16-21-22-23-24

Obviously boost leak, but i never saw these timing correction before. Beta V8 E30 map.
Note, this is the first time i ran E85 in the car. 11gal of 93/ 5 gallons of e85
Please chime in.

I would add two more gal of e85 and reset your adaptations. I'm not sure you'll do much better boost wise unless you actually have a boost leak, but with an ambient pressure of only 12.8, you're at a very high elevation and your turbos are working overtime.

[YoungBlood]

Yup, my ambient pressure is even lower than that 😂 as low as 12.3 sometimes, and I make similar boost, and I’ve leak tested, vac tested, and have pretty much all new parts in those departments. Small turbos
Just don’t flow enough air to hit 17-18 past 5k rpms. Another thing, is all your timing corrections hit all cylinders about the same time. I usually see that if I hit a bump in the road while logging a pull, even if it doesn’t show up readily in rpms. But more e85 won’t hurt, I run a bit heavier on my mix than that for the same tune.

[WedgePerformance]

Originally Posted by FCobra94

Heavy throttle closures due to boost overshoot. Have seen that in some other V8 logs, not sure what the deal is though.

I'm not sure when people decided throttle closers were bad for a boosted cars, but in reality throttle is used to help control boost from overshooting. For years we have pushed everything up out of the way to keep everyone happy, but that has a very negative impact on PID control. Also, when you look at the differences in elevation throughout the world, the older maps had issues. The new maps help eliminate those issues while allowing for a more consistent power delivery for all cars.

[I6TT]

Thank you gentlemen, I appreciate it.

Originally Posted by WedgePerformance

I'm not sure when people decided throttle closers were bad for a boosted cars, but in reality throttle is used to help control boost from overshooting. For years we have pushed everything up out of the way to keep everyone happy, but that has a very negative impact on PID control. Also, when you look at the differences in elevation throughout the world, the older maps had issues. The new maps help eliminate those issues while allowing for a more consistent power delivery for all cars.

Understood...thanks for the clarification on the new logic

[86merc]

Originally Posted by WedgePerformance

I'm not sure when people decided throttle closers were bad for a boosted cars, but in reality throttle is used to help control boost from overshooting. For years we have pushed everything up out of the way to keep everyone happy, but that has a very negative impact on PID control. Also, when you look at the differences in elevation throughout the world, the older maps had issues. The new maps help eliminate those issues while allowing for a more consistent power delivery for all cars.

I don't think it is that people think throttle closures are bad. It is the fact that you didn't see them on earlier map and logs. Then suddenly people are seeing them a lot on the v8 maps. So there was some concern. Now that you and MHD have confirmed that the strategy with V8 maps has changed and the PID control uses throttle closures, people know it isn't an issue to see some throttle closures.

The v8 tunes I have run so far seem very smooth, have good power delivery, and throttle closes are not felt in the car. If I had not seen the throttle closures in the logs I would not have even known they were happening.

We all appreciate the help and continued development of the tunes & features.

Agreed, well said!

[335e92tx]

X2
Glad some light has been shown.

Thanks rsl. ;-)

[WedgePerformance]

Thanks guys. I really appreciate your feedback.

[YoungBlood]

https://datazap.me/u/youngbloodv2/mh...data=22&solo=4

Here’s my contribution to the v8.0 logs, Taken at 7,000 ft of altitude, not sure if I need more e85 or if it’s something else but 2/3 logs I’ve done have bad timing pulls on the very top end

https://datazap.me/u/youngbloodv2/mh...0&data=4-22-26

Plugs probably could be changed. About 11k on them

[Ur Spongy Hero]

Stage 2 MHD tune with DP's and DCI on 91 octane with 4 gallons of E85.

Car feels VERY sluggish in WOT. This is the typical log of 3rd gear 2000rpm to almost 7000rpm. From what I can tell it all seems to be within acceptable ranges.

PLEASE help me find why it feels so slow.

https://datazap.me/u/urspongyhero/08...?log=0&data=22

[mfractal]

Originally Posted by Ur Spongy Hero

Stage 2 MHD tune with DP's and DCI on 91 octane with 4 gallons of E85.

Car feels VERY sluggish in WOT. This is the typical log of 3rd gear 2000rpm to almost 7000rpm. From what I can tell it all seems to be within acceptable ranges.

PLEASE help me find why it feels so slow.

https://datazap.me/u/urspongyhero/08...?log=0&data=22

Log seems fine to me apart from stfts which are white high. Why did you dump e85 on gasoline map ?

[335e92tx]

Originally Posted by Ur Spongy Hero

Stage 2 MHD tune with DP's and DCI on 91 octane with 4 gallons of E85.

Car feels VERY sluggish in WOT. This is the typical log of 3rd gear 2000rpm to almost 7000rpm. From what I can tell it all seems to be within acceptable ranges.

PLEASE help me find why it feels so slow.

https://datazap.me/u/urspongyhero/08...?log=0&data=22

Nothing really WRONG but I think you are just bumming up against the map limits considering how far you are from ambient air. You are at 12.4psi. That's probably not something you can expect the OTS map to account for. The WGdcs arn't bad so you can probably take more boost from a custom map. That will drive them a little harder than the 10psi you are getting at 5500. Your trims are also likely adding fuel in large amounts for the same reasons. I get the impression the scalers should be modded in the upper tables to add fuel and the trims wont have to.

In short, I think you need a custom map.

The real strange thing (at least to me), is the overboost conditions. Starts about 3800 and persists for the duration.

[Blown95ImpalaSS]

guys, thanks a ton for the input on my last log.

here's 2 new ones from tonight, v8 stage 2+ e30 map, looks like I don't register anywhere above 75% throttle, any thoughts? no codes, felt pretty good...

https://datazap.me/u/blown95impalass...data=3-5-22-25