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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 2 step backfire?



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      04-16-2015, 12:02 PM   #1
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2 step backfire?

I'm fully catless with magnaflow mufflers, jb4, intakes, and 2 step and my car does not even make a popping noise when I come off the 2 step and any RPM. how can I get a neat little pop/flame out my exhaust when I hit the 2 step?

like this https://www.google.com/url?sa=t&sour...0h_XoK1lRZxLJA

I know you all think its stupid, pointless, ricey, whatever I just want to do it and move on
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      04-16-2015, 12:59 PM   #2
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These cars run leaner because of direct injection it would most likely have to be built into the tune to go rich during 2 step or something in order to get the "Pop"
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      04-16-2015, 01:06 PM   #3
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They all say they have jb4, is there a setting on the tune to allow a lower AFR?
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      04-16-2015, 02:51 PM   #4
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Just sayin'
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      04-16-2015, 03:28 PM   #5
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yeah but mine doesn't do that at all.
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      04-16-2015, 06:27 PM   #6
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My 2 step is the same way. I'll get backfires every so often on a 2-3 shift, but nothing like the videos on youtube. My NLS also seems finicky.
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      04-16-2015, 08:07 PM   #7
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How did you guys set up 2 step I've been wanting to try it and want flames also haha
I have
Jb4
Dci
Downpipes
Stock exhaust
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      04-16-2015, 08:56 PM   #8
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Quote:
Originally Posted by e92_boost View Post
How did you guys set up 2 step I've been wanting to try it and want flames also haha
I have
Jb4
Dci
Downpipes
Stock exhaust
Your not gonna really shoot flames unless your straight piped or close to. So a aftermarket exhaust system would be your best choice.
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      04-16-2015, 09:09 PM   #9
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Quote:
Originally Posted by JamesHawk101
Quote:
Originally Posted by e92_boost View Post
How did you guys set up 2 step I've been wanting to try it and want flames also haha
I have
Jb4
Dci
Downpipes
Stock exhaust
Your not gonna really shoot flames unless your straight piped or close to. So a aftermarket exhaust system would be your best choice.
Sarcasm on the flames part lol and I'm thinking about muffler delete
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      04-16-2015, 09:27 PM   #10
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I don't know if you'd shoot flames through the factory muffler which is chambered. If you have no cats and a straight through muffler, it can happen. An old car I had did it when we were tuning because it was running so rich. Terrifying the first time it happened since I was right next to the muffler when a 3 ft. flame came out.

And OP, didn't you already start a previous post on how to get a backfire?
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      04-17-2015, 11:34 AM   #11
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Quote:
Originally Posted by MachWon View Post
My 2 step is the same way. I'll get backfires every so often on a 2-3 shift, but nothing like the videos on youtube. My NLS also seems finicky.
finicky as in it doesn't cut spark, rpms shoot to redline and you end up chewing up clutch? i've had that issue as well. haven't been able to log, but terry said it might be that i'm getting a bad pedal/throttle signal (not 100%). Same with the 2 step holds for a second then shoots to redline. I think its the module, but can't prove it until I get my laptop to last more than 5 minutes without a charge :P
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      04-17-2015, 05:04 PM   #12
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Quote:
Originally Posted by Daily Three View Post
finicky as in it doesn't cut spark, rpms shoot to redline and you end up chewing up clutch? i've had that issue as well. haven't been able to log, but terry said it might be that i'm getting a bad pedal/throttle signal (not 100%). Same with the 2 step holds for a second then shoots to redline. I think its the module, but can't prove it until I get my laptop to last more than 5 minutes without a charge :P
No, finicky as in on 1-2 or sometimes 2-3 shift it will cut out/stumble when coming into the next gear.
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      04-17-2015, 11:20 PM   #13
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I have no catz and an hpf exhaust and I can't even shoot flames either with 2 step set to 5k it's weird . I think you need like e85 or something
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      04-19-2015, 06:20 PM   #14
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^ I've tried a 40/60 mix of e85 and 93 and still no backfire
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      04-20-2015, 04:13 PM   #15
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Yeah with my vrsf/hpf exhaust setup people told me they would see little blue flames on occasion. Nothing too dramatic, but methanol does cause some crazy backfires at times. I think you'd have to pretty much be running a larger possibly non stock frame turbo. Otherwise you could always run antilag or 2 step with a fairly high octane fuel setup of some sort.
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      04-20-2015, 04:18 PM   #16
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smh...
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      04-20-2015, 04:29 PM   #17
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I like this and I don't. I wonder if this would scare the tailgaters to back the fuck off though. Lol
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      04-20-2015, 04:39 PM   #18
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Quote:
Originally Posted by mr.335i View Post
I like this and I don't. I wonder if this would scare the tailgaters to back the fuck off though. Lol
I did the Euro Rear Fog Light Switch mod for tailgaters.

The secondary brake lights are the Euro Fog Lights, so I just pushed the button to make it look like I was applying the brakes when I really wasn't, to keep people in check.
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      04-20-2015, 04:50 PM   #19
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Quote:
Originally Posted by Jeff@TopGearSolutions View Post
I did the Euro Rear Fog Light Switch mod for tailgaters.

The secondary brake lights are the Euro Fog Lights, so I just pushed the button to make it look like I was applying the brakes when I really wasn't, to keep people in check.
Never thought about that. Pretty smart. Better than shooting flames at them.
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      10-12-2019, 11:00 AM   #20
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Quote:
Originally Posted by 2jzn54 View Post
finicky as in it doesn't cut spark, rpms shoot to redline and you end up chewing up clutch? i've had that issue as well. haven't been able to log, but terry said it might be that i'm getting a bad pedal/throttle signal (not 100%). Same with the 2 step holds for a second then shoots to redline. I think its the module, but can't prove it until I get my laptop to last more than 5 minutes without a charge :P
Im having this problem now...
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      10-12-2019, 11:18 AM   #21
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Do you guys have the anti-lag integrated with 2step and turned on? That really adds to the fireworks out the back!
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      11-01-2019, 06:58 AM   #22
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Remember to use the 2 step in moderation as it will shorten the life of your turbos.
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