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03-18-2014, 10:15 PM | #1 |
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DIY Rom tuning for exhaust pops and backfires W/ romraider
did some testing and changes to achieve a noisier exhaust. no damage to anything so far and barely any changes in gas mileage(.1 L/100km).
with just ignition base timing A modified, no pops produced. ignition base timing B produced some pops, but not as aggressive. i ended changing both ignition base timing maps A and B to -10* timing in the lowest load column(.15g/rev). with the lowest load at negative timing, it kind of made the throttle an on/off switch for the pops. you wouldn't reach that engine load when normally driving or when decelerating. but if you gave it the slightest bit of throttle to that sweet spot, it would spit pops and become obnoxious. but everyone loves it. changing the full decel engine load value to negative timing doesn't produce pops for some reason. but its better to not have pops at full decel because you don't want to constantly become a pack of firecrackers when coming to a stop. after messing with the ignition maps, i started looking into fueling. with the overrun enrich rpm delta activation set to 6000, the pops were alot more aggressive and rally sounding, as opposed to before where it sounded like you were running over a bunch of pop cans. trying to achieve flames but i think this is as far as im going. i don't want to break stuff UPDATE 3/16/2015 wow hard to believe this was a year ago.. just an update don't mess with fueling or overrun. it was probably more placebo effect than it actually doing anything. just do ignition map B. A is a limp map. read through the whole thread before you attempt this on your own car UPDATE #2 hahaha seeing this again reminded me of my ricer days. glad alot of you are enjoying this! dirty clip of when it there was no catback. follow me on ig! https://www.instagram.com/p/wz5XYVRD...anesespaceship will get some driving videos up. just need a exterior camera mounting solution exterior video! [ame="https://www.youtube.com/watch?v=OGMrf382Kx4"]https://www.youtube.com/watch?v=OGMrf382Kx4[/ame] bored @ a railroad crossing under a roof [ame]http://youtu.be/ghEAXxeHYcU[/ame] [ame]http://youtu.be/CMDSWnLG2N0[/ame] [ame]http://youtu.be/c2VgspN8oBQ[/ame] Last edited by andrew5826; 02-13-2019 at 11:34 PM. |
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03-18-2014, 11:29 PM | #2 |
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awesome.
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03-19-2014, 12:49 AM | #3 |
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this is desirable???
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03-19-2014, 12:56 AM | #4 |
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so dope. if you could get the pops to sound a tad deeper in tone, that would be perfect.
2nd video sounds like fireworks in the distance. This is it 3rd video it died out? Last edited by forzajuve; 03-19-2014 at 01:35 AM. |
03-19-2014, 01:34 AM | #5 | |
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I don't want to sound like a smartass but what's the point of that ?
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03-19-2014, 03:15 PM | #6 |
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because racecar??
the 3rd video was the first map i made. not as loud |
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03-19-2014, 03:29 PM | #7 |
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yep it's sounds great
also the new mercedes cla 45 amg have the same exhaust pops [ame="http://youtu.be/zkcoeg4Tyd4"]http://youtu.be/zkcoeg4Tyd4[/ame]
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03-19-2014, 06:25 PM | #8 |
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Must be a california thing. Most of the trends out there haven't caught on here yet. Thank god.
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03-19-2014, 09:01 PM | #9 |
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Got bored. Tried it. Nothing. But then Again I still have stock over pipe and front pipe and a greddy sp style exhaust. Oh and it wasn't really warmed up so maybe I will hear something after driving it around.
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03-19-2014, 10:30 PM | #10 |
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I love the idea. As long as it doesn't hurt any thing to for it.
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03-19-2014, 11:32 PM | #11 |
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I don't know why but I love that sound, when it's done right. Options for the OFT @shiv@vishnu? So long as it's safe.
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03-20-2014, 12:15 AM | #12 |
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Need some ecutek guru's in here
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03-20-2014, 08:44 AM | #13 | |
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