|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Hybrid Turbo options and comparisons
|
|
01-17-2016, 06:05 AM | #155 | ||
Second Lieutenant
99
Rep 250
Posts |
Quote:
|
||
Appreciate
0
|
01-17-2016, 07:45 AM | #156 | |
Colonel
614
Rep 2,410
Posts |
Quote:
Does he whistle at deers?
__________________
2011 335d 11.68 @ 125.71 mph 1/4 mile NHRA certified track
Ram Cummins with lots-o-mods |
|
Appreciate
0
|
01-17-2016, 07:46 AM | #157 | ||
Second Lieutenant
99
Rep 250
Posts |
Quote:
|
||
Appreciate
0
|
01-17-2016, 12:04 PM | #158 |
Second Lieutenant
79
Rep 244
Posts |
|
Appreciate
1
|
01-17-2016, 03:27 PM | #159 | ||
Second Lieutenant
99
Rep 250
Posts |
Quote:
|
||
Appreciate
0
|
01-17-2016, 04:27 PM | #160 |
Private First Class
55
Rep 157
Posts |
|
Appreciate
1
|
01-17-2016, 04:29 PM | #161 |
Second Lieutenant
99
Rep 250
Posts |
|
Appreciate
0
|
01-17-2016, 08:41 PM | #162 | |
Banned
425
Rep 1,040
Posts |
Quote:
.....but we do appreciate you sharing what you know Last edited by iaknown; 01-17-2016 at 08:54 PM.. |
|
Appreciate
0
|
01-17-2016, 08:52 PM | #163 | ||
Banned
425
Rep 1,040
Posts |
Quote:
Quote:
And some will say my car had a fault but I had gone through everything on the car by this point, new vacuum lines, boost sensor, boost solenoid/valve, checked the wastegate (confirmed the wastegate was opening and staying open with a camera), everything. Plus this was the same Stage 2 tune everyone else had with no issues.....the only difference was I was one of the few running open exhaust at the time. That's what drove me to port the WG. The wastegate mod shaved about a couple psi off, enough to get the max boost to where it should be and not trigger limp mode. Now for the details....yes there is a dip after the turbos switch, but nothing like the dip in the car you had shown Bob, which I find interesting. I see a maximum of 5psi when the turbos switch. So I think your theory about the wastegate opening from the switch may be right on, but I have a few ideas to correct it......Is it currently costing me power? I'm sure it is, but at the time I did not have any other answers and didn't want to risk issues with my turbos. This was over a year ago and I think its safe to say many of us were still learning a lot about these cars (and I am one of the few pushing a Stage 2 w/stock turbos even harder with extra fuel and lots of meth injection). All that being said, I am perfectly fine with admitting that the wastegate mod may not be the best idea for most cars and looks to cost power in the midrange. I am also glad to hear that it appears our stock turbos may be able to take a lot more abuse that we thought......I just didn't want to find this out the hard way. In any case, most likely any power I cost my car in the midrange will not matter soon Last edited by iaknown; 01-17-2016 at 09:01 PM.. |
||
Appreciate
2
|
01-17-2016, 11:27 PM | #164 | |
Private
21
Rep 64
Posts |
Quote:
The R70 CP3 pump seems to be ok in cold weather for that power level, but a little to small when weather is getting hot, am I right? |
|
Appreciate
0
|
01-18-2016, 05:39 AM | #165 |
Private First Class
55
Rep 157
Posts |
.
To brake the 400hp line you need at least 105mg/stroke fuel. Stock 283hp/560nm comes with 72-75mg fuel rate. When fuel is cold - pump works ok. Warmer fuel contains less power, so ecu correct that by increasing the amount. That is too much for the smaller pump. |
Appreciate
1
|
01-18-2016, 06:06 AM | #166 |
Private First Class
55
Rep 157
Posts |
|
Appreciate
1
|
01-18-2016, 11:39 AM | #169 | |
Private First Class
8
Rep 180
Posts |
Quote:
|
|
Appreciate
0
|
01-18-2016, 11:56 AM | #170 | |
Banned
425
Rep 1,040
Posts |
Quote:
Are you referring to this causing high boost (the initial issue)? I did check the turbine valve actuator for something unrelated early on and all looked good. If anything I think this would hurt boost though, not give me more. Perhaps I am wrong about that..... But maybe you are referring to the switch opening the wastegate in the midrange? |
|
Appreciate
0
|
01-18-2016, 12:10 PM | #171 | |
Private First Class
55
Rep 157
Posts |
Quote:
Opening the flap a bit more only calms down boost pressure behaving. Opening does not do any harm. Very small steps ! Turn more to "closed" position gives a very good response to throttle, but causes back pressure peaks. Try, you surprised Let the WG be as it is. |
|
Appreciate
1
|
01-18-2016, 01:16 PM | #173 | |
Private
21
Rep 64
Posts |
Quote:
Thanks! |
|
Appreciate
0
|
01-18-2016, 01:34 PM | #174 | |
Private
21
Rep 64
Posts |
Quote:
|
|
Appreciate
0
|
01-18-2016, 01:57 PM | #175 | |
Private
21
Rep 64
Posts |
Quote:
In my stock software I can see that the bypass flap isn't fully opened at peak power (only approx 50 %), have you found some more power when tuned to be fully opened (and so maybe less back pressure) in high rpm's? |
|
Appreciate
0
|
01-18-2016, 02:21 PM | #176 | |
Banned
425
Rep 1,040
Posts |
Quote:
I will certainly try this, thanks for the tip..... |
|
Appreciate
0
|
Bookmarks |
|
|