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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning JB1 w/ Catted DP

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      01-07-2018, 06:49 PM   #1
CJ_M240
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JB1 w/ Catted DP

My apologies if this has already been discussed but I am new and I did search.

I知 looking to get a a CEL free DP (Wagner/Fabspeed) and I am trying to weigh the benefits of installing a JB1 vs JB4. I like the simpler JB1 install but don稚 want to lose the smoothness of the JB4. I知 not really interested in maxing my car out with bolt ons and making Map adjustments so I知 not sold on the JB4 either. Any thoughts?
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      01-07-2018, 07:20 PM   #2
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Quote:
Originally Posted by CJ_M235i View Post
My apologies if this has already been discussed but I am new and I did search.

I知 looking to get a a CEL free DP (Wagner/Fabspeed) and I am trying to weigh the benefits of installing a JB1 vs JB4. I like the simpler JB1 install but don稚 want to lose the smoothness of the JB4. I知 not really interested in maxing my car out with bolt ons and making Map adjustments so I知 not sold on the JB4 either. Any thoughts?
Perhaps consider Catted DP with a simple stage1 flash? It will probably be smoother and easier than installing a JB+/JB4. Especially with the fast development of ODB flashing at the moment.

You may want to have a look at the F30/F87 forums for more info, it applies to our N55s as well.
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      01-08-2018, 05:05 PM   #3
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Jb4 will give you + ~20 more whp, smoother power delivery, control control and failsafes to protect your engine at all time.

It is superior in every way to a stage 1.
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      01-08-2018, 07:30 PM   #4
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Jb4 will give you + ~20 more whp, smoother power delivery, control control and failsafes to protect your engine at all time.

It is superior in every way to a stage 1.
So 20+ whp over a JB1 with a DP?
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      01-08-2018, 08:00 PM   #5
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So 20+ whp over a JB1 with a DP?
Yes.
Map 2 pushes 2psi more than map1
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