DIY Rom tuning for exhaust pops and backfires W/ romraider

[andrew5826]

Originally Posted by KslayFRZ

I think it's must the fuel load if I read correctly,.and those are the smaller ones lol. It's loud af

mind posting a pic of your edited tables?

[KslayFRZ]

I copied your chart completely, but I'll double check in the morning

[andrew5826]

Originally Posted by KslayFRZ

I copied your chart completely, but I'll double check in the morning

cool, do you have a resonated front pipe? looks like it needs to be completely catless for flames as i had no flames running a stock front pipe with jdl uel and tomei type 80

[KslayFRZ]

No resonators no cats :o

[Flat_4_Life]

Originally Posted by andrew5826

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



will get some driving videos up. just need a exterior camera mounting solution

bored @ a railroad crossing under a roof

Could you help me do this with my 2015 FRS I've never used romraider before so I'm kinda unsure

[Flat_4_Life]

Originally Posted by andrew5826

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



will get some driving videos up. just need a exterior camera mounting solution

bored @ a railroad crossing under a roof

how do you edit the table?

[Tenchi]

Read the thread from the beginning.

[FRS Johnny]

You think with catless headers, resonated front pipe and mid pipe and straight pipe axle back will it shoot flames? I can't drive with the car fully catless cause its so loud... I mean I would, but tickets and such aren't my goal. Trying to see if theres a sound difference between a catted vs a catless resonated front pipe and if it will shoot flames!

[Tenchi]

Originally Posted by FRS Johnny

You think with catless headers, resonated front pipe and mid pipe and straight pipe axle back will it shoot flames? I can't drive with the car fully catless cause its so loud... I mean I would, but tickets and such aren't my goal. Trying to see if theres a sound difference between a catted vs a catless resonated front pipe and if it will shoot flames!

No.

[FRS Johnny]

Originally Posted by Tenchi

No.

k.

[Flat_4_Life]

Originally Posted by carlitosway6891

just did this to mine, i have the Borla UEL header, factory overpipe, factory front pipe, vibrant muffler, factory muffler delete.....

below 4500rpm, it sounds like intermittent popcorn popping in the microwave....above 5000rpm.....yea lol..... it sounds like someone shooting a gun at times....super loud! i will try to take a video one day and have someone following me recording cause it sounds like there would be fireball pops being how loud it pops at times above 5K rpm =)

Did you only change the ignition B?

[akahenry]

I'm going to try this and will post a sound clip this weekend if all is good. If not, fuck me.

[Tenchi]

Originally Posted by akahenry

I'm going to try this and will post a sound clip this weekend if all is good. If not, fuck me.

Kiss your muffler packing goodbye lol.

[KslayFRZ]

I set fire.... to The rain