82mm TB months of problems
12-17-2013, 11:14 AM
#151
At least not on my car the glitch is unlikely to have anything to do with the 02 locations since the identical exhaust was fine a month ago. All that changed was my tune file, and the longblock now is moving a lot more air via the blower speed and bigger/better engine.
Yeah grounds are one thing you can't overdo, it's my first instinct when there's weird electrical glitches.
May be way off the mark, but is it possible that the hiccup has something to do with the location of the O2 sensors? I have LTHs on my car (as I'm sure do most, if not all, of those experiencing the issue). My cats have also been removed. It seems that on the installation of the LTHs, the pre-cat O2 sensors were positioned a lot further down the exhaust than where they were originally located and I'm wondering whether their location could intermittently result in mis-information being fed to the ECU
I was thinking the same on the ground strap.
I also noticed the same thing on decel it would dump fuel making the stft's go into -15 through -25% then it would load up on idle to correct itself.
On the warm thing also when it really hot outside and engine temps are up . it does it less frequent
I also noticed the same thing on decel it would dump fuel making the stft's go into -15 through -25% then it would load up on idle to correct itself.
On the warm thing also when it really hot outside and engine temps are up . it does it less frequent
12-17-2013, 12:29 PM
#152
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'06 E55
Have you all checked extensively for leaks with contact/brake cleaner?
12-17-2013, 12:57 PM
#154
Super Member
Thread Starter
The lean condition to pop the motor is going to be more than just a slight leak. Plus with a slight leak these ECU's will throw other codes as well. The map code comes under a light load when the main TB is almost closed and the bypass is almost fully open bleeding off boost or starting to create boost. I really think you need to look at what the bypass is doing at this time. The map code could be the fact that there is to much boost as compared to the % that the bypass or the TB is open. If it were a leak it would come up sooner or more often.
Just think like this if the bypass were to recalibrate because its not at the right %.
It would send in spikes of air causing a lean condition.
Just think like this if the bypass were to recalibrate because its not at the right %.
It would send in spikes of air causing a lean condition.
12-17-2013, 01:06 PM
#155
Take star with you and log the bypass valve
When those motors popped is probably because it leaned out and still pressed the gas and boom, was anyone checking/logging afrs, timing etc. when the motors popped?
When those motors popped is probably because it leaned out and still pressed the gas and boom, was anyone checking/logging afrs, timing etc. when the motors popped?
12-17-2013, 01:39 PM
#156
MBWorld Fanatic!
12-19-2013, 09:23 PM
#157
Super Member
Thread Starter
Here is one that came to mind on this one.
How man people with this issue are running 80mm snout not a modified 74 snout?
It seems most people without issue are running a modified stock snout.
How man people with this issue are running 80mm snout not a modified 74 snout?
It seems most people without issue are running a modified stock snout.
05-04-2015, 12:12 AM
#163
I had lots of stumbling and crappy throttle behavior, and I installed silicon coupler between y-pipe and throttle body. After that it's been driving great.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
01-04-2020, 11:23 AM
#164
I had lots of stumbling and crappy throttle behavior, and I installed silicon coupler between y-pipe and throttle body. After that it's been driving great.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
01-04-2020, 02:20 PM
#165
MBWorld Fanatic!
I had lots of stumbling and crappy throttle behavior, and I installed silicon coupler between y-pipe and throttle body. After that it's been driving great.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
I think the main culprit here is the engine moving around and vacuum or intake leaks are allowing unmetered air to get in.
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Sir-Boost-a-Lot (01-07-2020)
01-04-2020, 06:07 PM
#166
So what do you think the issues are that people are having with the 82mm setup? Could it be just leaking somewhere? Or do you have to do some adaptation with star? I had some issues with the 82mm setup so i ended up going back to stock. Thinking about taking on the task again and to see if issues arrise. I know with the stock Tb im not getting any codes now so i know for sure that there is no leaks on the Supercharger section. What needs to be done after the install? Adaptation with star? Raising the idle about 10-15% more with star?
12-08-2020, 09:12 PM
#168
Hi,
So what do you think the issues are that people are having with the 82mm setup? Could it be just leaking somewhere? Or do you have to do some adaptation with star? I had some issues with the 82mm setup so i ended up going back to stock. Thinking about taking on the task again and to see if issues arrise. I know with the stock Tb im not getting any codes now so i know for sure that there is no leaks on the Supercharger section. What needs to be done after the install? Adaptation with star? Raising the idle about 10-15% more with star?
So what do you think the issues are that people are having with the 82mm setup? Could it be just leaking somewhere? Or do you have to do some adaptation with star? I had some issues with the 82mm setup so i ended up going back to stock. Thinking about taking on the task again and to see if issues arrise. I know with the stock Tb im not getting any codes now so i know for sure that there is no leaks on the Supercharger section. What needs to be done after the install? Adaptation with star? Raising the idle about 10-15% more with star?
