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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4 Map 2 Safe to run with catless DP and intake with 91 oct?



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      06-24-2016, 02:37 AM   #1
Mad E92
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JB4 Map 2 Safe to run with catless DP and intake with 91 oct?

So I live in California and we don't really have 93 available all the time. The closest station with 93 is two hours away and probably really expensive.

Am I able to run map 2 with a catless DP and a BMS perf. intake safely with 91 oct? Or is it just better to run map 5 and let it adapt?

Yes I did but I haven't found a clear answer.
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      06-24-2016, 06:09 AM   #2
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Quote:
Originally Posted by Mad E92 View Post
So I live in California and we don't really have 93 available all the time. The closest station with 93 is two hours away and probably really expensive.

Am I able to run map 2 with a catless DP and a BMS perf. intake safely with 91 oct? Or is it just better to run map 5 and let it adapt?

Yes I did but I haven't found a clear answer.
You can do it but won't see any gains. Do you have an aftermarket exhaust? If so, just keep it in map 5 no matter what. Otherwise, stay on map 1. Harsh that you don't have 93 readily available. Frickin' state you live in!!
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      06-24-2016, 12:32 PM   #3
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Quote:
Originally Posted by Mad E92 View Post
So I live in California and we don't really have 93 available all the time. The closest station with 93 is two hours away and probably really expensive.

Am I able to run map 2 with a catless DP and a BMS perf. intake safely with 91 oct? Or is it just better to run map 5 and let it adapt?

Yes I did but I haven't found a clear answer.
That's a bummer. Might be more information on n54tech.com - the BMS forum for all things JB4
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      06-24-2016, 12:45 PM   #4
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Stick with Map 5. Otherwise you need to log Map 2 to see how the car is taking the additional boost.
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      06-24-2016, 12:59 PM   #5
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
Stick with Map 5. Otherwise you need to log Map 2 to see how the car is taking the additional boost.
Thanks Jeff. I'll just keep it in map 5 for it to adapt. Seems like a better option.
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