11-20-2020, 02:34 PM | #1 |
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Cold Start Delete BM3 Cat Heating Delete
Anyone using the BM3 cold start delete on their tune ? I've had it in for the last 2 months
after installing my downpipes. I've noticed a really rough cold start & idle, anyone else deal with this as well? Car shakes heavily on cold starts 50% of the time. Mods are are BM3 STG 2 91, CTS catted downpipe & dual resonator delete |
11-20-2020, 07:22 PM | #2 |
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I had cold start delete turned on on stage 1 with stock cats, mainly because I let the car warm up a bit before I drive off. I noticed that I had some really rough cold starts where the car would start then drop down to around 800 or 900 rpm then would drop down to the normal 600ish rpm but what would happen was the car would keep dropping below the normal 600 and would cause for rough idles so I turned the cold start back on.
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11-21-2020, 02:36 AM | #3 | |
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11-21-2020, 03:20 AM | #4 |
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You're in Cali, so probably don't experience as cold as temps as we do in Denver. With cold start on, with my car sitting outside, my car would literally stall (6-speed) if I tried to go before it was done with the cold start procedure. With it off, it does do the rpm fluctuation at first, but then is good to drive after a minute or so warmup. Now that it's garaged, even with an E30 tune, it starts right up with no issues. Idles pretty steadily at 800-850rpm initially, then drops to 600ish after a minute or two.
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11-21-2020, 10:34 AM | #5 | |
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I'm no tuner but doesn't seem like that'd be hard.
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11-24-2020, 07:53 AM | #7 |
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I've had mine off for a year and a half, running ots maps and custom tune, and it's never been a problem.
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