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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 > candid review of bmw performance power kit for n55



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      08-04-2013, 10:07 PM   #23
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i can't get enough of the louder exhaust!!! i have a catless dp coming (used ar from a member here)... i have a feeling i will want an exhaust after that
You're going to get a check engine light eventually man lol
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      08-04-2013, 10:26 PM   #24
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You're going to get a check engine light eventually man lol
haha!!! well on that note... quick question for you guys...

i'm gonna get the cel as soon as my dp is on. i don't plan on getting another tune anytime soon so is it ok to drive around with cel on? i know it's annoying but does the car run any differently? i talked to my service guy at the dealer and he is fine with me having a catless dp.

could there be some unforeseen consequences?
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      08-04-2013, 11:42 PM   #25
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Sometimes those CEL's cause driveability issues too..it might even put your car in limp mode. who knows..the logic is strange on these DME's
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      08-05-2013, 04:52 PM   #26
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U'll be happy with the catless downpipe, but you wont be satisfied until u get the JB4.

I noticed a huge difference (power loss) when removing the JB4 and only running catless DP alone.
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      08-07-2013, 07:29 AM   #27
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Quote:
Originally Posted by gibumee View Post
i can't get enough of the louder exhaust!!! i have a catless dp coming (used ar from a member here)... i have a feeling i will want an exhaust after that
Going catless?!? You should consider getting a JB4 to really enjoy the power and sound, not to mention you won’t have to stare at the CEL.
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      08-07-2013, 02:25 PM   #28
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Guys, can I run JB4 on top of my PPK without any problems or potentially removing PPK permanently? Excuse my ignorance on these products.

Thanks!
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      08-07-2013, 04:05 PM   #29
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Guys, can I run JB4 on top of my PPK without any problems or potentially removing PPK permanently? Excuse my ignorance on these products.

Thanks!
Yep. It'll work just fine. They can work in conjunction. Your base map will be the PPK map from here on out..
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      08-07-2013, 05:43 PM   #30
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Works the same with Cobb a well. The PPK will be the "stock" map and then you have various levels of aggressiveness with the tune.
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      10-27-2013, 10:39 PM   #31
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I noticed that you reported that it changed the sound. Was this specifically louder at 2000 rpm?
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