08-15-2020, 09:49 PM | #1 |
New Member
20
Rep 28
Posts |
Rough Engine Start Up With Stage 2 BM3
I currently have SSR castles primary downpipes w/ BM3 stage 2 91. I kept the stock secondary downpipes.
On BM3 configurations I have cold start set as OFF. When starting up the car the engine runs rough feels like it's about to stall, almost like it's out of gas. Once the car runs about 30-45 seconds it runs smooth. Anyone else experience this with cold start shut off ? Should I have cold start set to on since I still have cats in my secondary downpipes ? Thanks for your input! |
08-16-2020, 02:43 PM | #2 |
In the Details
1810
Rep 867
Posts
Drives: Yes
Join Date: Jan 2020
Location: Texas Hill Country
iTrader: (0)
Garage List 2020 AMG GTR [0.00]
2022 R8 Quattro Spyder [0.00] 2023 X5M50 [0.00] 2023 718 Spyder [0.00] 2024 Silverado [0.00] 2024 Civic Type R [0.00] |
I don't think the OTS tunes are properly tuned for a low RPM cold temp startup. All the cold start shut off does is a hard cut to RPM. There's more to it than that to do it properly.
|
Appreciate
0
|
08-16-2020, 07:58 PM | #3 |
Private
38
Rep 70
Posts
Drives: 22'G80 M3 18'F80 M3 18'GLC63
Join Date: Nov 2019
Location: CT
|
Had the same issue ended up turning cold start back on.
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|