how to make my car breath fire!!!! just for fun!

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how to make my car breath fire!!!! just for fun!

Postby nathanhardy » Wed May 23, 2012 9:15 pm

So i've got all these goodies in my car like launch control! and i've always wonder how and why race car spit fire on shifts...and in launch i have a half blown out cat but i've never seen a spark at all.. just wondering if my turbo vr6 can act alittle more racey when i show off!!
:lol: or is that a bad thing!!!!

i'll throw in my msq if anyone can check it over also that would be great its a fairly new tune so im not going to jump on the show off train just yet but it would be nice to know anything and everything!!! if anyboby sees anything weird please tell me
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Re: how to make my car breath fire!!!! just for fun!

Postby billr » Thu May 24, 2012 6:57 am

Are those ones you see spitting fire turbos? I'm not familiar with turbos, but would be surprised if enough exhaust heat gets past the turbo turbine to light things. Really want a flame-thrower? How about an injector (flowing into a stand-off tube, for heat insulation) and a spark-plug down in the exhaust pipe? Those could easily be controlled with an MS auxiliary output. Since you asked (sort of)... showing off isn't always bad, but having enough fuel in the exhaust to ignite isn't all that safe, I would avoid it!
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how to make my car breath fire!!!! just for fun!

Postby muythaibxr » Thu May 24, 2012 9:15 am

A friend's turbo rx7 with a blowoff valve to atmosphere running the stock computer used to blow out 2-3' flames on nearly every shift. Rotaries have hotter than normal exhaust temps though.

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Megasquirt is not for use on pollution controlled vehicles. Any advice I give is for off road use only.

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Re: how to make my car breath fire!!!! just for fun!

Postby Twistedmetal » Thu May 24, 2012 9:54 am

My wastegate is atmospheric dump, flames are normal. Nobody has ever seen them come down the downpipe though.
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Re: how to make my car breath fire!!!! just for fun!

Postby nathanhardy » Thu May 24, 2012 7:57 pm

I'm sure it doesn't help to have a cat.. I'm just wondering how to get more pop from launch control
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Re: how to make my car breath fire!!!! just for fun!

Postby seishuku » Thu May 24, 2012 8:34 pm

My SR20 will pop a flame on overrun after a few high boost/high RPM pulls, kinda cool seeing a little flame and pop in my side mirror. :D

It's just a matter of enough fuel and a hot enough exhaust to ignite it.

And if you aren't getting much of a pop from launch control, take a look in your VE table at the RPM/MAP where launch control settles at and add more fuel.
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Re: how to make my car breath fire!!!! just for fun!

Postby twinturboiroc » Thu May 24, 2012 10:00 pm

add some extra fuel as stated above, also when using the reatrd and spark cut during launch control set ur timming to say 10-15* adtc.

i did the launch control on my friends turbo v6 camaro @ 3,000 rpms it takes about 3 seconds to start showing flames out the downpipe
i belive the settings are
12* atdc and cut 3 from 6

once he put a muffler on the car we had to back the settings down though, loading up a muffler with raw fuel and lighting it off is a very very bad idea
also since u have acat it may not work i think the cat may just burn up any of the unburnt fuel in the ex pipe before it gets anywere near ur tailpipes
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Re: how to make my car breath fire!!!! just for fun!

Postby EspeNS » Fri May 25, 2012 2:19 pm

I can make my Cosworth spit flames at overrun if I want :) All I do is turn off overrun cut off, igniton table at about 0 at overrun, and AFR table at about 10 at overrun. After 1 or 2 pulls with full boost it spits flames at overrun :D
I do the same thing on a mates car to keep the turbo spinning during braking before corners.
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Re: how to make my car breath fire!!!! just for fun!

Postby nathanhardy » Sat May 26, 2012 11:05 am

On launch control with my vr6 I'm 9 deg and 5 out of 7 3000-3500
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Re: how to make my car breath fire!!!! just for fun!

Postby rabid » Mon Jun 04, 2012 12:17 pm

I used to use flat shift settings of cut spark only. That would dump plenty of the fuel into the exhaust so it would go off like a shotgun when I got back on it.
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