|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
lag in power when shifting 1 to 2 gear after installing after market parts
|
|
01-16-2020, 12:22 PM | #1 |
Second Lieutenant
59
Rep 213
Posts |
lag in power when shifting 1 to 2 gear after installing after market parts
Im having a issue with my setup. I have a 2007 335i e90 Manual 6 speed.
peviously Ive changed injectors, coils, spark plugs, vanos, oil filter housing gaskets, install oil catch can, new valve seals and cleaned head intake ports. head gasket, timing chain and guides, crankshaft sprocket, upgraded ecu to newer model and programmed CAS. Car was running perfect before installing aftermarket parts. Last night i finished installing vrsf 5" intercooler, vrsf catless downpipes, charge pipes, HKS blowoff valves on my car and tested it out without MHD tune. I notice that my car would lag in power when I shift from 1-2 gear. When i step on the gas, feels like a loss of power for a couple seconds and then it picks up again. So I thought maybe i need to update my ecu to MHD stage 2+ and it would fix this issue being that i have blow off valve etc... I installed MHD stage 2+ and car seem to run smoother, but still had issue when shifting to next gear. Id get a lag in power. anyone know why? I wonder if it has to do with blow off valve? any help is appreciated. thank you in advance. |
01-16-2020, 12:51 PM | #2 |
Brigadier General
2004
Rep 3,732
Posts |
Can you run a data log so you can actually see what is going on with the throttle, boost, fuel, timing, etc, etc....when you shift?
__________________
2007 335i, BMS DCI, BMS Chargepipe w/Tial BOV, ARM Catless Downpipes, silicone inlets, Bilstein B12 Prokit Suspension, Whiteline subframe bushings, Front/Rear M3 control arms, G-Plus FMIC, Stage 2 LPFP, Custom E40 tune by Justin (V8Bait), xHP stage 3 transmission flash, RB Two Turbos....10.90 @ 128mph
|
Appreciate
0
|
01-16-2020, 01:54 PM | #3 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
Ill try and search on internet also in the mean while to see what i can pull up on this. I have also bought the MHD monitor package too. after reading up on data logging. i read that most logging was done from 3rd to 4th gear pulls? do u suggest i use the auto data logging from MHD to log 1st and 2nd gear pulls? I still need to figure out how i can pull that log out of phone and share it on here... Last edited by Makoa6; 01-16-2020 at 03:06 PM.. |
|
Appreciate
0
|
01-16-2020, 10:54 PM | #4 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
|
|
Appreciate
0
|
01-16-2020, 10:57 PM | #5 |
Colonel
2124
Rep 2,758
Posts |
upload it through the MHD App at datazap.me. That's where you upload logs and people are able to view the entire log with all data available to them
|
Appreciate
0
|
01-16-2020, 11:35 PM | #8 |
Second Lieutenant
59
Rep 213
Posts |
Do I need 3data logs before I upload a file? I cant find my files in here....
|
Appreciate
0
|
01-17-2020, 01:14 AM | #11 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
http://https://datazap.me/u/makoa6/2...og=0&data=3-20 Last edited by Makoa6; 01-17-2020 at 02:25 AM.. |
|
Appreciate
0
|
01-17-2020, 02:49 AM | #12 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
|
|
Appreciate
0
|
01-17-2020, 02:50 AM | #13 |
Second Lieutenant
59
Rep 213
Posts |
|
Appreciate
0
|
01-17-2020, 11:57 AM | #15 |
Second Lieutenant
59
Rep 213
Posts |
|
Appreciate
0
|
01-17-2020, 12:00 PM | #16 |
Brigadier General
2004
Rep 3,732
Posts |
|
Appreciate
0
|
01-17-2020, 01:54 PM | #17 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
ill post up results after i test. thank you. |
|
Appreciate
0
|
01-17-2020, 06:06 PM | #18 |
Lieutenant
391
Rep 532
Posts |
You are overshooting TQ limiter and your boost targets are way off. Are you at WOT? Your pedal position is kind of all over the place too.
It looks like you have traction control on, turn it all the way off and re-log. |
Appreciate
0
|
01-17-2020, 07:05 PM | #19 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
I will hold the DTC buttton for 10sec when i get home and that should turn off the traction control. then I will do another log. I will also clear my CEL before i do another data log because my cooling fan wasnt plugged in all the way. thanks for helping. I appreciate it. |
|
Appreciate
0
|
01-17-2020, 07:19 PM | #20 |
Second Lieutenant
59
Rep 213
Posts |
btw, I have a MT 6 speed, would that explain the question about pedal position and WOT? in between gears, i let off on throttle...
|
Appreciate
0
|
01-17-2020, 08:41 PM | #21 |
Lieutenant
391
Rep 532
Posts |
When you aren't shifting the log shows you are not at WOT - I can't remember if MHD pedal position is affected by throttle closures from the ECU, but once you get a new log with traction control all the way off we should be able to see whats going on
Last edited by JM98; 01-17-2020 at 08:42 PM.. Reason: spelling |
Appreciate
1
Makoa658.50 |
01-17-2020, 10:24 PM | #22 | |
Second Lieutenant
59
Rep 213
Posts |
Quote:
Here is my pulls. I turned off DTC and cleared codes,did a catalog and car seem way better without the power lag!! https://datazap.me/u/makoa6/2007-335...og=1&data=3-21 |
|
Appreciate
0
|
Bookmarks |
|
|