DIY Rom tuning for exhaust pops and backfires W/ romraider

[86Tony]

I got it to shoot flames today it was sick

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[NyC Zn6]

Originally Posted by 86Tony

I got it to shoot flames today it was sick

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what are your mods?

[86Tony]

Tomei uel catless front pipe greddy exhaust and oft

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[86Tony]

[ame="https://www.youtube.com/watch?v=JGn49Z6Onhw"]Brz shoot flames - YouTube[/ame]

[steve99]

Originally Posted by bee_are_zee

The next tuning adventure should be to find out if we can get ghost cams at idle...

AFAIK cam vvt is not active at idle, i believe even if you put non zero values in vvt tables ecu will just use zero at idle. Limited oil pressure to drive vvt acuators may be part of reason.



you will have to do it the old fashoned way and grind the lobes

[KslayFRZ]

Originally Posted by KslayFRZ

Back at it once I read through the updates

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[FRSBRZGT86FAN]

I feel like at minimum with this mod you should have a catless front pipe....

[FRSBRZGT86FAN]

Originally Posted by Snyperiflex

this is the ONLY table that I modified

What's the value in the 0.20 table? it's too pixelated for me to make out?

[Cole]

Originally Posted by FRSBRZGT86FAN

What's the value in the 0.20 table? it's too pixelated for me to make out?

It's like -5.04. I tried inputting -5 this morning and it ended up switching to -5.04.

FWIW, before I had just the first like done, and it still crackled and popped.

[FRSBRZGT86FAN]

Originally Posted by Cole

It's like -5.04. I tried inputting -5 this morning and it ended up switching to -5.04.

FWIW, before I had just the first like done, and it still crackled and popped.

Thanks! I have the one in the original post saved as snapcracklepop, and the one using the adjusted timing that @Snyperiflex used saved as snapcracklepop2 in my oft

Any OBD2 trouble codes need to be disabled for this as well?

[Snyperiflex]

Originally Posted by FRSBRZGT86FAN

Thanks! I have the one in the original post saved as snapcracklepop, and the one using the adjusted timing that @Snyperiflex used saved as snapcracklepop2 in my oft

Any OBD2 trouble codes need to be disabled for this as well?

I believe mine is -6.09, I just referenced one of the screenshots from an earlier post by someone else for that column. My values weren't any different from what was posted before

[FRSBRZGT86FAN]

So I just did a few runs with it for about an hour or two through some tunnels and back roads and such and here's my review my only exhaust mod is the berk dual tip muffler delete. It is very easy to control and it sounds quite good, it only really happens on the auto in manual mode when you decel/downshift and lightly tap or hold the gas pedal as the rpms come down. It also took around 30 minutes for it to really kick in and be quite loud and for me to easily control it by modulating the throttle. It's also louder under load. I assume that's due to the computer learning the new ROM as well as the fact the entire exhaust system was probably at a high temp at that point. As for sound it's still quite loud with just a muffler delete, it's novelty sort of wears off after a while because you do notice a fuel mileage drop and also occasional smell gas , in fact I had a full tank before my escapade of running through tunnels and such and it used between 1/4 to 1/2 a tank maybe a bit less. Also I still honestly believe it would be best at minimum to have a catless front pipe and a well packed muffler (or none at all in my case ) if you do this. I hate to think what's happening to the cats getting coated with fuel whenever this tune is run. Also if it does shoot flames it sure as hell will probably coat your bumper with soot or something at high speeds.


Bottom line it's easy to do, sounds good, and is good practice with romraider, but I'd be weary of what it would do long term to the car.

[rawafoo]

i love this tune, been using is for around 2 months now, N1 Catback Tomei Uel and catless front pipe and overpipe, The pops and crackles are LOUD sometimes gunshot sounds and backfires usualy, however today i heard a knock and immedietly pluged in my OFT and with a bit of throttle the knock correction which is always 0 became 1.3 for a second, so i might remove the tune for now, i just changed the timeing base exactly like the OP without any fuel enrichment or anything else

What do you guys think how bad can this be?
Forget the damage to the exhaust, im just saying how bad can this be to the engine itself?
Thanks guys

[FRSBRZGT86FAN]

Originally Posted by rawafoo

i love this tune, been using is for around 2 months now, N1 Catback Tomei Uel and catless front pipe and overpipe, The pops and crackles are LOUD sometimes gunshot sounds and backfires usualy, however today i heard a knock and immedietly pluged in my OFT and with a bit of throttle the knock correction which is always 0 became 1.3 for a second, so i might remove the tune for now, i just changed the timeing base exactly like the OP without any fuel enrichment or anything else

What do you guys think how bad can this be?
Forget the damage to the exhaust, im just saying how bad can this be to the engine itself?
Thanks guys

That's a good question, no one has a consensus as to the long term effects of this tune itself either. I personally put my car back to my original edited stg 1 93 octane tune, the novelty of popping and backfires has worn off completely