08-22-2015, 06:08 PM | #1 |
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Help with JB4 install in Calgary
Any member(s) in Calgary that can help with JB4? I had a shop install it but now with dp and intake on map 2 it feels slower than map 1. Want to see if someone can check it over to ensure everything is hooked up correctly. It feels like something is not right.
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08-22-2015, 11:25 PM | #2 |
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Do you have JB4 logs? That will tell you what's happening.
Map 2 dies for me after 5500rpm. It makes more power than Map 1 at lower RPMs and Map 1 makes more power after 5500 rpm. I have been on multiple dynos showing the same behavior. Might have to do with fueling and our elevation. |
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08-23-2015, 04:50 AM | #3 | |
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08-23-2015, 07:37 AM | #4 | |
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I think due to our elevation the stock turbos can't keep up. I was on a dyno last Friday with another M3 that has a flash tune and after 5500 rpm power drops off (worse than stock) for him too. I'll post the results up shortly. Due to this I find myself short shifting the car when I'm on the track. Pure turbo upgrades may be in our future |
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08-23-2015, 04:59 PM | #5 | |
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08-24-2015, 01:30 PM | #6 |
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I've circled 2 points of concern on your JB4 logs. Can you post the Pro View version of the same log? Just load those excel files you have into the JB4 software and select the Pro View. It will show other parameters like trims. The 2 circled points show boost dropping substantially and the car starting to lean out. What kind of fuel are you running in the car? For comparison, here's my JB4 log from a Map 2 dyno run at our altitude: |
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09-01-2015, 08:23 PM | #7 |
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I am shocked that you guys are boosting 25 psi on map 2. Then again your altitude probably plays a huge role. I am running 21psi on map 2 and the car roasts tires when I pin it at 3000rpm in 3rd.
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09-04-2015, 09:13 AM | #8 |
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m down in CGY if your needing some extra help with your JB4, fire me off a PM.
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