[dpaul]

Originally Posted by Sman217

https://datazap.me/u/sman217/datalog...&data=20-21-22

Took a single gear pull if anyone else wanted to see my wacky over boost log. Also noticing fuelling (STFT's) are way low, -30%. I'm assuming that means i need more E in the mixture.

Maybe less E, not more! But think you've got multiple problems. There is clearly a fueling issue as evidence by maxed trims and low rail pressure but it is not clear how that would result in overboost and abnormally high WGDC.

Provide some information about your mods, your tune and your fuel.

[BM3Rrrr]

Originally Posted by Sman217

https://datazap.me/u/sman217/datalog...&data=20-21-22

Took a single gear pull if anyone else wanted to see my wacky over boost log. Also noticing fuelling (STFT's) are way low, -30%. I'm assuming that means i need more E in the mixture.

Negative fuel trim values mean the engine computer is subtracting fuel (decreasing the pulse width or on-time of the fuel injectors) to reduce the amount of fuel injected into the engine. This is done to LEAN out the fuel mixture to compensate for what it perceives as a rich running condition.

Some possible causes of RICH fuel mixtures include:
Leaky fuel injector
Excessive fuel pressure due to bad fuel pressure regulator or restricted fuel return line
Extremely dirty air filter or restrictions in air intake system
Exhaust restrictions (clogged converter, crushed exhaust pipe or plugged muffler)
Bad O2 sensor (output shorted to voltage so it reads RICH all the time)

[dpaul]

Originally Posted by BM3Rrrr

Negative fuel trim values mean the engine computer is subtracting fuel (decreasing the pulse width or on-time of the fuel injectors) to reduce the amount of fuel injected into the engine. This is done to LEAN out the fuel mixture to compensate for what it perceives as a rich running condition.

Some possible causes of RICH fuel mixtures include:
Leaky fuel injector
Excessive fuel pressure due to bad fuel pressure regulator or restricted fuel return line
Extremely dirty air filter or restrictions in air intake system
Exhaust restrictions (clogged converter, crushed exhaust pipe or plugged muffler)
Bad O2 sensor (output shorted to voltage so it reads RICH all the time)

Would the fact that both banks show the same maxed trim argue against a leaky injector or at least require leaky injectors on both banks?

Would the fact that AFRs for both banks appears normal argue against bad 02 sensors?

I like notion of badly regulated fuel pressure, perhaps faulty high pressure fuel sensor as it would a) affect both banks equally and b) possibly account for the odd profile of rail pressure.

Just not sure how this results in overboosting and excessive WGDC

[BM3Rrrr]

Originally Posted by dpaul

Would the fact that both banks show the same maxed trim argue against a leaky injector or at least require leaky injectors on both banks?

Would the fact that AFRs for both banks appears normal argue against bad 02 sensors?

I like notion of badly regulated fuel pressure, perhaps faulty high pressure fuel sensor as it would a) affect both banks equally and b) possibly account for the odd profile of rail pressure.

Just not sure how this results in overboosting and excessive WGDC

Most likely on the bold statement.
The overboosting is strange though due to the fact that there isn't any throttle closures.

[Sman217]

I'm on the first email tune from Ken wedge. It's a E50 blend and I'm betting the fuel mixture was off. I also believe the load tables weren't scaled for my 3.5 bar map sensor. I may have forgotten to tell him that. Car has kittyless dp chargepipe and kompact plumbsck Dv's and 5" ic. The fuel trims are close to -30 because the car has too much 93 in it causing it to hit target AFR too easily so the car attempts to back of fuel. That's my theory. Any
Thoughts?

[Sman217]

Originally Posted by BM3Rrrr

Most likely on the bold statement.
The overboosting is strange though due to the fact that there isn't any throttle closures.

Refer to comment above.

[dpaul]

Originally Posted by Sman217

I'm on the first email tune from Ken wedge. It's a E50 blend and I'm betting the fuel mixture was off. I also believe the load tables weren't scaled for my 3.5 bar map sensor. I may have forgotten to tell him that. Car has kittyless dp chargepipe and kompact plumbsck Dv's and 5" ic. The fuel trims are close to -30 because the car has too much 93 in it causing it to hit target AFR too easily so the car attempts to back of fuel. That's my theory. Any
Thoughts?

My first thought is that the information about your tune, mods and fueling is critical to any analysis of your problem. Might consider having the basic details upfront for future posts.

My second thought is talk to Wedge. You paid for it and he'll give you better advice than the vast majority of posters, certainly better than me.

[Sman217]

Originally Posted by dpaul

My first thought is that the information about your tune, mods and fueling is critical to any analysis of your problem. Might consider having the basic details upfront for future posts.

My second thought is talk to Wedge. You paid for it and he'll give you better advice than the vast majority of posters, certainly better than me.

I guess you weren't in this thread in the previous page. I've explained everything you asked for already, on the previous page.

[dpaul]

Originally Posted by Sman217

I guess you weren't in this thread in the previous page. I've explained everything you asked for already, on the previous page.

You're absolutely right - I completely missed it. Apologies!
Well, looking forward to hearing how you resolve the issue.

[HB E90]

https://datazap.me/u/curt/7-4-19?log...13-15-16-17-22

Just did a couple of logs to see how everything looks. I've been running E30 1+ for a few months. Current mix is about E36. Dont know if I should have so many things graphed but check it out please. Only thing I see is a minor timing correction cyl 2 starting at 5700 rpm. Runs awesome.

[Ilma]

Originally Posted by HB E90

https://datazap.me/u/curt/7-4-19?log...13-15-16-17-22

Just did a couple of logs to see how everything looks. I've been running E30 1+ for a few months. Current mix is about E36. Dont know if I should have so many things graphed but check it out please. Only thing I see is a minor timing correction cyl 2 starting at 5700 rpm. Runs awesome.

Looks like you are triggering a torque limiter around 4600 rpm and it's reducing timing about 6 degrees at that point until 5300 rpm. Your torque value actual is dropping at the same spot, so probably something not working optimally with your load and torque tables.

Good news is it's an easy fix, but since it's an MHD OTS map, you would have to get that adjusted via a custom tune......It is not octane related.

[Sgop335]

Originally Posted by Ilma

Looks like you are triggering a torque limiter around 4600 rpm and it's reducing timing about 6 degrees at that point until 5300 rpm. Your torque value actual is dropping at the same spot, so probably something not working optimally with your load and torque tables.

Good news is it's an easy fix, but since it's an MHD OTS map, you would have to get that adjusted via a custom tune......It is not octane related.

Thats torque limit 1, the guy was too lazy to turn off his traction control. Whats crappy is the throttle closures.

[HB E90]

Originally Posted by Sgop335

Thats torque limit 1, the guy was too lazy to turn off his traction control. Whats crappy is the throttle closures.

Not too lazy, just didn't think I needed to in 3rd gear. Traction is not a problem in 3rd gear on clean dry roads AFAIK? Unless there's something I'm missing? Please enlighten me. Also I'm pretty new to this but I'm open to criticism, just learning as I go. I'll make sure to turn off TC from now on just to be sure.

[HB E90]

Originally Posted by Ilma

Looks like you are triggering a torque limiter around 4600 rpm and it's reducing timing about 6 degrees at that point until 5300 rpm. Your torque value actual is dropping at the same spot, so probably something not working optimally with your load and torque tables.

Good news is it's an easy fix, but since it's an MHD OTS map, you would have to get that adjusted via a custom tune......It is not octane related.

I see what you mean now that I plotted that! Couple of small dips. I dont really feel it but the graph doesn't lie? So the only way to fix it is going custom tune? Thanks

[Ilma]

Originally Posted by HB E90

I see what you mean now that I plotted that! Couple of small dips. I dont really feel it but the graph doesn't lie? So the only way to fix it is going custom tune? Thanks

No...Sgop is right.
Turn off your DTC and log again. That should clear up torque limit 1 and restore your timing.

Your throttle closures are because actual boost is exceeding requested boost, but it's pretty minor and even wedge says that some throttle closures are normal part of boost control in the version 8 maps.

You could pay for a custom tune to have them tweak your WGDC a bit lower but I don't think you will even notice such a minor correction.

[rosullivan04]

For clean logs TCS should be disabled. Plus, not sure on your setup but i can break traction pretty easily in third.

Originally Posted by HB E90

Not too lazy, just didn't think I needed to in 3rd gear. Traction is not a problem in 3rd gear on clean dry roads AFAIK? Unless there's something I'm missing? Please enlighten me. Also I'm pretty new to this but I'm open to criticism, just learning as I go. I'll make sure to turn off TC from now on just to be sure.

[HB E90]

Originally Posted by Ilma

No...Sgop is right.
Turn off your DTC and log again. That should clear up torque limit 1 and restore your timing.

Your throttle closures are because actual boost is exceeding requested boost, but it's pretty minor and even wedge says that some throttle closures are normal part of boost control in the version 8 maps.

You could pay for a custom tune to have them tweak your WGDC a bit lower but I don't think you will even notice such a minor correction.

Ok just did a couple of logs with DTC disabled. Actual torque steady and no timing drops, but one throttle closure for a bit. Anything else you see? Thank You
https://datazap.me/u/curt/7-5-19-dtc...15-18-22-27-28

[HB E90]

Originally Posted by rosullivan04

For clean logs TCS should be disabled. Plus, not sure on your setup but i can break traction pretty easily in third.

No traction issues since I put the 265 Mich PS4S tires on and they're warm. Night and day difference vs the stock RF's. I dont even feel it slip in 2nd unless I purposely do it out of a corner in 2nd for a slow drift! That is sweet when I get it right

[Ilma]

Originally Posted by HB E90

Ok just did a couple of logs with DTC disabled. Actual torque steady and no timing drops, but one throttle closure for a bit. Anything else you see? Thank You
https://datazap.me/u/curt/7-5-19-dtc...15-18-22-27-28

Nope!

Log looks very nice except for the throttle closures......but you are only 0.3 psi of boost over target when it happens, so nothing to lose sleep over.

Throttle closures are a built in safety mechanism whenever actual boost gets higher than boost being requested.

In small increments, it is just fine-tuning the overshoot, but for some of us (myself included) we don't like ANY throttle closures as we feel it might rob some power.

Like I said earlier, a custom tuner could adjust your actual boost to stay lower than the target - thus eliminating the throttle closures.....but the tradeoff would be a bit lower boost overall, which would also leave some power on the table.

It's fine the way it is.

Given you have no timing corrections on stage 1 E30, you might want to try a stage 2 E30 map and see if your timing is still clean.

If it is, then you might want to step up a stage.

You will get slightly higher boost and maybe the higher boost target in a stage 2 map might clear up the throttle closures

Certainly worth a try.

[f82_spooly]

335is 6MT, FBO + Inlets, CP + ebay BOV, 7.5" VRSF Stepped Competition MHD + JB4 PUMP BEF

I'm not sure what's going on but sometimes when I really get on it in map 2 my boost will get completely cut off and I get into limp mode with NO codes/no CEL and then I "clear codes" and my boost comes back. Not sure whats going on. Here's some logs what do you guys think?

In the log "Boostleakmap2" is where my boost cuts off so thats where the issue is. The other 2 are logs I did before that pull and after that pull. Ignore the title "boostleak" i just named that cause its the first thing that popped in my head when i wanted to rename it lol. Not sure if thats it or not.

https://datazap.me/u/deadlocked/map-2?log=0&data=1-4

what do you guys think? Car also feels sluggish for some reason

[Sgop335]

Originally Posted by Ilma

Nope!

Log looks very nice except for the throttle closures......but you are only 0.3 psi of boost over target when it happens, so nothing to lose sleep over.

Throttle closures are a built in safety mechanism whenever actual boost gets higher than boost being requested.

In small increments, it is just fine-tuning the overshoot, but for some of us (myself included) we don't like ANY throttle closures as we feel it might rob some power.

Like I said earlier, a custom tuner could adjust your actual boost to stay lower than the target - thus eliminating the throttle closures.....but the tradeoff would be a bit lower boost overall, which would also leave some power on the table.

It's fine the way it is.

Given you have no timing corrections on stage 1 E30, you might want to try a stage 2 E30 map and see if your timing is still clean.

If it is, then you might want to step up a stage.

You will get slightly higher boost and maybe the higher boost target in a stage 2 map might clear up the throttle closures

Certainly worth a try.

Just want to point out that the dme compares the boost mean to the boost target. I think it is a common misconception to compare boost to target. That is why it is better to log boost mean as well, which hbe90 did. So if you compare that, the overshoot at 4180rpm is not 0.3psi but almost 3psi!
Hence the throttle closed aggressively to 32.9 to curtail this overshoot. By the same token the data logger is also consistently overboosting by 1psi at >5300rpm. In my experience this is quite unnecessary since the poor turbos are producing the boost but the throttle says no way and cuts it down resulting in lower boost and more iat.

[Red_Bean_Bun]

Originally Posted by e92life

335is 6MT, FBO + Inlets, CP + ebay BOV, 7.5" VRSF Stepped Competition MHD + JB4 PUMP BEF

I'm not sure what's going on but sometimes when I really get on it in map 2 my boost will get completely cut off and I get into limp mode with NO codes/no CEL and then I "clear codes" and my boost comes back. Not sure whats going on. Here's some logs what do you guys think?

In the log "Boostleakmap2" is where my boost cuts off so thats where the issue is. The other 2 are logs I did before that pull and after that pull. Ignore the title "boostleak" i just named that cause its the first thing that popped in my head when i wanted to rename it lol. Not sure if thats it or not.

https://datazap.me/u/deadlocked/map-2?log=0&data=1-4

what do you guys think? Car also feels sluggish for some reason

It’s over boosting. And did you turn on auto delete faults on JB4 ?

Lower your wgdc.