[sickem]

Originally Posted by Jeffman

Not sure what you mean. Lots of time on the topic of spark plugs in this forum. I just want to see the scientific proof that one is better than the other.

The challenge here is that the error bar with dyno runs doesn't really allow you to discern small changes in power like this...just too many variables involved to conclude that a 5 whp increase or decrease is real and attributable to one particular variable change (like plugs)

[Brule]

How do you log with V3?
I have had JB4 for 18 months and just got a cobb ap.

I can set parameters and make the ap start logging and stop logging but how dop i get the logs saved, to a laptop. or do they save somewhere on the ap?
I tried hooking laptop while plugged into car but it stopped the ap from working.

[bplant13]

There's a great article in here on how to correct for boost overshoots, by logging the MAF Req and Boost Setpoint factor, and adjusting the WGDC base table. I've had issues when I did my Stage 1, and then a few more with Stage 2+ after going cat-less, but very minor. Using the same base table from my customized stage 1 map, now in my stage 2+ map, I was ending up with 0.5psi of over boost in the 3500-4000rpm range. Not much to correct, and it's pretty simple to do.

My dilemma is, that I'm not hitting the load target over 5000rpm, the difference getting larger as I rise in the rpm range, falling short by almost 2psi at 6500rpm. The article referenced above explains doing the reverse will help. However, the MAF Req range I need to adjust and raise the WGDC base amount, is in the 350-400 range, and the table only goes to 333.

I"m not sure if raising at 333 will raise a linear amount beyond that, or if I should try and change the X axis values (which could throw everything out of whack).

Any ideas?

[e92_enthusiast_1]

View post on imgur.com

Hey all just wanted to share my results with Cobb AP Stg 2+ sport.

I'm very pleased to say the least. Can't wait to try e30+ maps!!!

Is there any harm with running this map all the time? Should I be switching to a less powerful map between hard drives?

[UMich_335i]

Originally Posted by Brule

How do you log with V3?
I have had JB4 for 18 months and just got a cobb ap.

I can set parameters and make the ap start logging and stop logging but how dop i get the logs saved, to a laptop. or do they save somewhere on the ap?
I tried hooking laptop while plugged into car but it stopped the ap from working.

First download the Accessport Manager to your computer (Windows) then plug your V3 in to the USB port (disconnected from your car). When you open the AP Manager it should recognize your V3 is connected then you can save the logs to your computer and view in Excel.

[135Pats]

Originally Posted by e92_enthusiast_1

View post on imgur.com

Hey all just wanted to share my results with Cobb AP Stg 2+ sport.

I'm very pleased to say the least. Can't wait to try e30+ maps!!!

Is there any harm with running this map all the time? Should I be switching to a less powerful map between hard drives?

If you have the octane run it all you want. To the greatest extent possible (imo at least) map switching should be discouraged. The DME needs to relearn a lot of information each time you do it.

Again just IMO but I think people use the "on the fly" JB4 feature WAY too liberally. It's not intended to just click a button and suddenly you are in kill mode. not smart but now i'm just ranting.

[Bimmer305]

Originally Posted by bplant13

There's a great article in here on how to correct for boost overshoots, by logging the MAF Req and Boost Setpoint factor, and adjusting the WGDC base table. I've had issues when I did my Stage 1, and then a few more with Stage 2+ after going cat-less, but very minor. Using the same base table from my customized stage 1 map, now in my stage 2+ map, I was ending up with 0.5psi of over boost in the 3500-4000rpm range. Not much to correct, and it's pretty simple to do.

My dilemma is, that I'm not hitting the load target over 5000rpm, the difference getting larger as I rise in the rpm range, falling short by almost 2psi at 6500rpm. The article referenced above explains doing the reverse will help. However, the MAF Req range I need to adjust and raise the WGDC base amount, is in the 350-400 range, and the table only goes to 333.

I"m not sure if raising at 333 will raise a linear amount beyond that, or if I should try and change the X axis values (which could throw everything out of whack).

Any ideas?

If you want to do it right, first thing would be to map your X axis accordingly to your load request (your ideal boost curve).

Log a full run 3 to 5 gear, and then map your x axis accordingly, so you hit your target on 3rd gear but don't overshoot on 5th.
Example I mapped mine 189 200 222 290 320 400

[Jeff@TopGearSolutions]

Originally Posted by 135Pats

If you have the octane run it all you want. To the greatest extent possible (imo at least) map switching should be discouraged. The DME needs to relearn a lot of information each time you do it.

Again just IMO but I think people use the "on the fly" JB4 feature WAY too liberally. It's not intended to just click a button and suddenly you are in kill mode. not smart but now i'm just ranting.

This is very true. People misunderstand the concept of the on the fly map switching. It's only intention was to make it easy to change maps for additional modifications or octane changes, that's it.

[e92_enthusiast_1]

Thanks for the fast follow up guys.

Originally Posted by 135Pats

If you have the octane run it all you want. To the greatest extent possible (imo at least) map switching should be discouraged. The DME needs to relearn a lot of information each time you do it.

Again just IMO but I think people use the "on the fly" JB4 feature WAY too liberally. It's not intended to just click a button and suddenly you are in kill mode. not smart but now i'm just ranting.

Originally Posted by Jeff@TopGearSolutions

This is very true. People misunderstand the concept of the on the fly map switching. It's only intention was to make it easy to change maps for additional modifications or octane changes, that's it.

[fj]

Can anyone tell me if the N54 Accessport V2 will work with a UK 56 plate (Manufactured Dec 2006) 335i E92?

The website seems to list 2007-onwards

[e92_enthusiast_1]

99% sure it will.

The site is listing MY's and even your Dec '06 build 335i im sure is considered MY '07.

Originally Posted by fj

Can anyone tell me if the N54 Accessport V2 will work with a UK 56 plate (Manufactured Dec 2006) 335i E92?

The website seems to list 2007-onwards

[e92_enthusiast_1]

Quick question guys as I've been noticing something recently with the above map.

Am i suppose to not be getting into very much boost in 1st or 2nd gear? 3rd gear im getting 16 psi around 3k rpms.

2nd gear it pretty much maxes at like 4 or 5 psi.

Is that normal? Is there a place to look at what the map has "configured" for it?

Another question. I've been on this map for about a week and at first the new boost feeling of 16psi i could really feel it. Idk if it's just me but I don't feel it as much anymore. Maybe its cause it's been a week. Has this happened to anyone before? Maybe i need more boost lol

Sorry if that doesn't make sense.

Thanks In Advance.

[Allen@MOTIV]

In lower gears there is much less load placed on the engine than in higher gears. You should still be seeing much more than 5psi though. Get a 2nd gear log and we'll go from there.

As far as how the car feels, more than likely you're just use to the power and the car doesn't feel as fast as it first feels.

[e92_enthusiast_1]

Interesting, I will get some logs and report back soon, Thx for the quick response.

Originally Posted by Allen@PTF

In lower gears there is much less load placed on the engine than in higher gears. You should still be seeing much more than 5psi though. Get a 2nd gear log and we'll go from there.

As far as how the car feels, more than likely you're just use to the power and the car doesn't feel as fast as it first feels.

[e92_enthusiast_1]

Allen,

Thx again BTW. OK I'm pretty sure I'm crazy now. Hitting 16psi in 2nd gear just fine. What i think it might have been is that 2nd gear goes so fast that im pretty sure i just wasnt giving it enough throttle to get it to build up quick enough. Im using Stock Throttle map and Idk if that has anything to do with it.

I'm relieved as I thought maybe something had come loose or had broken lol.

I am still going to try and find a decent spot to get a good log. I want to be able to read those and understand what my cars thinking.

Ive also heard great things about getting a pro tune by your group but before i go deeper into the tune hole i want to learn the tune basics with the OTS maps. So ill do some logging and get some opinions first.

Shout out to this thread. Everyone on here is very helpful.

Bad news is I think I'm addicted now. I want to try ethanol at some point. Heard great things about it.

Originally Posted by Allen@PTF

In lower gears there is much less load placed on the engine than in higher gears. You should still be seeing much more than 5psi though. Get a 2nd gear log and we'll go from there.

As far as how the car feels, more than likely you're just use to the power and the car doesn't feel as fast as it first feels.

[Glowin]

Originally Posted by e92_enthusiast_1

Allen,

Thx again BTW. OK I'm pretty sure I'm crazy now. Hitting 16psi in 2nd gear just fine. What i think it might have been is that 2nd gear goes so fast that im pretty sure i just wasnt giving it enough throttle to get it to build up quick enough. Im using Stock Throttle map and Idk if that has anything to do with it.

You mean you weren't even going WOT when checking your log?

[e92_enthusiast_1]

Nah I wasn't logging. I was just using the gauges on the AP and looking there lol. Its pretty accurate i assume. Idk I think I was just being too careful lol. The n54 can take a beating. I should coddle it less hahaha. Also, it was city driving and that might have had a factor.

Anyways yeah good laugh seeing as everything's ok.

Originally Posted by Glowin

You mean you weren't even going WOT when checking your log?

[Glowin]

Originally Posted by e92_enthusiast_1

Nah I wasn't logging. I was just using the gauges on the AP and looking there lol. Its pretty accurate i assume. Idk I think I was just being too careful lol. The n54 can take a beating. I should coddle it less hahaha. Also, it was city driving and that might have had a factor.

Anyways yeah good laugh seeing as everything's ok.

Not sure what you were doing still. My guess is you never went WOT. I haven't used my AP to log for months, but I am sure it records the max value. I've used it to do pulls, and looked after the pull to see what boost I hit.

[chris23023]

This is my first posted Log, Looking for input. I do not have HPFP or LPFP logged, as they are both holding up fine.

Log: http://datazap.me/u/chris23023/7914-...10-11-12-13-14

75 degree ambient , 840ft above MSL

Tune: Cobb OTS E30

Mods: 36K miles, New plugs (300 miles max), FMIC, and DP's, 91 non ox + 30% Eth

How do they look? I feel timing corrections are an issue, and boost is higher than where I want it, but I will allow the pro's to give feedback

Thanks

[135Pats]

Originally Posted by chris23023

This is my first posted Log, Looking for input. I do not have HPFP or LPFP logged, as they are both holding up fine.

Log: http://datazap.me/u/chris23023/7914-...10-11-12-13-14

75 degree ambient , 840ft above MSL

Tune: Cobb OTS E30

Mods: 36K miles, New plugs (300 miles max), FMIC, and DP's, 91 non ox + 30% Eth

How do they look? I feel timing corrections are an issue, and boost is higher than where I want it, but I will allow the pro's to give feedback

Thanks

There's a brief overshoot followed by some throttle trim, if it's doing that over and over look into the PID tables and adjust as is needed.

You have some relatively minor corrections across multiple cylinders. Were I to guess, i'd say you are probably a bit tight on octane. Goal is to end up with E30 in the tank, not 30% E85 + 91 Pump. That won't get you E30. I would highly encourage you to log HPFP and LPFP PSI even if you feel they are holding well. If the high pressure side starts to crash that's something you need to be aware of quickly.

[chris23023]

Originally Posted by 135Pats

There's a brief overshoot followed by some throttle trim, if it's doing that over and over look into the PID tables and adjust as is needed.

You have some relatively minor corrections across multiple cylinders. Were I to guess, i'd say you are probably a bit tight on octane. Goal is to end up with E30 in the tank, not 30% E85 + 91 Pump. That won't get you E30. I would highly encourage you to log HPFP and LPFP PSI even if you feel they are holding well. If the high pressure side starts to crash that's something you need to be aware of quickly.

Thank you for your response. As far a ethonol, I calculated the amount using intercepteft. Com so hopefully the percent is correct. I dropped the fuel pumps to be able to see throttle. I'm assuming the throttle closure is caused by the overshoot? My plan is on my next tank will be to adjust to E35 (and tweak scholar accordingly) and then trim out over boost. Hopefully throttle closure will go away, as well as the timing corrections. I guess we shall see

[135Pats]

Originally Posted by chris23023

Thank you for your response. As far a ethonol, I calculated the amount using intercepteft. Com so hopefully the percent is correct. I dropped the fuel pumps to be able to see throttle. I'm assuming the throttle closure is caused by the overshoot? My plan is on my next tank will be to adjust to E35 (and tweak scholar accordingly) and then trim out over boost. Hopefully throttle closure will go away, as well as the timing corrections. I guess we shall see

I like that plan. Get a little more octane in there, it never hurts and once you start to get more towards E40, it becomes pretty darn knock proof at the advance and boost levels Cobb OTS maps push. So at that point we could rule out it being octane, and at those charge temps it's not the IAT comp tables.

Can you log WGDC? Load looks OK to me.