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BMW 3-Series (E90 E92) Forum
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Cobb/JB4/MHD
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05-19-2016, 02:18 PM | #23 | |
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05-19-2016, 02:22 PM | #24 | |
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lol, you said the JB4 doesn't trick the ECU to make power. but its does. thats how it does what it does. Boost is not the only thing that makes power. JB4 Fueling, tricks the ecu by changing the pressure sensor output, retarding timing (G5) tricks the ECU by changing crank sensor output. Everything it does it does by tricking the ECU into doing it by altering the values it sees. Just like every other piggyback on the market. But anyway, i'll leave it alone. don't want to get banned for disagreeing with a vendor. |
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05-19-2016, 02:27 PM | #25 |
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JB4 has it's benefits in this platform when it calls for it. Those with back end flashes that are stacking JB4 know exactly what that means. If you don't know what that means, then you are not there yet. Keep modding then you'll find the limitation and that's where the stacking of Flash + JB4 comes in.
Can a simple bolt on guy use a Jb4 and be content and happy with it, sure. There are 1000's of guys doing that today. I even have customers with JB3's that love their cars. Same can go for someone wanting a Cobb or MHD. There are a bunch of ways to cut the chicken here and cook it. For the typical Joe and "basic mods" all the tunes will get anyone where they need to be. Going beyond the basics, E85, custom tuning, methanol integration, upgraded turbo's, limitations of hardware, costs/budget ETC is where these tunes start separating themselves. For the question of JB4 VS COBB VS MHD it becomes a little tiring to answer all the pros and cons of each. Some of those cons may not really affect everyone the same way. For example, JB4 hard to install... Well, not really for someone who's done it a bunch of times. I can install it in about 20 minutes casually. JB4 tricks the ECU. OK yea, it's a piggyback. This isn't earth shattering news. This platform started with Piggybacks since day 1 and for the longest time there wasn't a flash except for Dinan or Giac which were both very over -priced and then you were stuck with those tunes with no resale value. (Now I'm getting off on a tangent though). MHD cons in the past have been sourcing the right cable (which we know a good source for) and other OTG incompatibilities with the android device ETC Then again, MHD is very capable and has a great price point entry. Biggest "CON" about Cobb as of lately is it's not supported. The term is thrown around very loosely as if Cobb will not help someone who purchased it. This is not the case. If you buy a Cobb today and have questions their customer service will help you. When people say it's not supported it just means they are not involved in producing new maps or map updates but this is pretty moot as the maps they have are just fine for their "average" customer base. That being said the OTS maps have been good enough for quite some time now. Anyone who's anyone with a Cobb on any platform (Subaru, Ford, ETC) knows that the base maps are conservative and if you want to really wake up the car after you have basic bolts on, you need to go with a custom tune. Other good news is Cobb has come down on their price point (it's about time)... That being said for a newcomer or otherwise person just getting into the platform they will all make about the same power out of the box. I'm sure no matter how unbiased I try to phrase this someone will knit pick the details. I'm just trying to stick with facts though. I could rant forever about tunes. OP, take the information here with a grain of salt. Contact someone who you trust their opinion on. Ask the appropriate question and think of what your goals are and what's important to you. Hope that helps. |
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05-19-2016, 02:34 PM | #26 | |
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2- How the Jb4 does these things does not change the actual result, Result is the JB4 different than other piggybacks actually has the ability to change variables other than boost 3- you seem very knowledgeable (not being sarcastic), so im sure you know this. AFR and timing are lowered so boost can be higher. So changing the AFR or timing does not make more power , it actually make less power but it is done so car can target higher boost values while still being safe for the engine . Thats why i said JB4 does not only trick the ECU to make power. It targets richer AFR to protect the engine, It has a limit of boost by gear to help traction ( lower boost = lower power but in real world result lower boost means better traction so faster car,etc...)
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05-19-2016, 02:34 PM | #27 | |
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05-19-2016, 04:06 PM | #28 |
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Everything Mike & Jeff said!!☝🏻️ But If it were me I would go with Cobb!! Good Luck making a decision... Pros and cons 2 both and both have a good amount of people running the tunes. Personal preference will go a long way when choosing a Tune. Look up which one gives you the options you want...
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05-19-2016, 07:39 PM | #29 |
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That's a fair point. But these tune comparison questions pop up at least once a month, you could just pick anyone of the many 'good discussion between Cobb and MHD' that's popped up in 2016. Not trying to be a dick, they just really pop up THAT often.
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05-19-2016, 08:25 PM | #31 |
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You forgot best oil
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05-19-2016, 10:15 PM | #36 | |
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05-19-2016, 10:59 PM | #37 |
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Olive Oil. Extra VIRGIN!
and Vaseline for smoother shifts
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05-20-2016, 03:30 AM | #39 | |
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To throw another spanner in the works then, would you ever pick a regular map over one of these units, on a standard car? It's also defintly a 2006 |
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05-20-2016, 08:49 AM | #40 |
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MHD no question
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05-20-2016, 08:52 AM | #41 | |
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FYI guys they had a 2006 overaseas. Not in US IIRC. |
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05-22-2016, 09:03 PM | #43 |
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