Exhaust firing when up and down shifting

[couleur]

Hi guys,

Recently I drove along side a Renault Megane RS along the sprint highway and I noticed his exhaust was firing whenever he up shift or down shift. The firing was very minor, not like those Lamborghini or Racing Cars, it was small but visible and he was cruising fairly usual, he wasnt upshifting hard or downshifting in high revs. It looked pretty damn cool from my view and I was curious what mods did he do to make his exhaust fire mildly?

http://www.inautonews.com/wp-content/uploads/2013/01/Renault-Megane-RS-265-Cup-malaysia-4.jpg

I am driving an Audi TTS, stage 2, 3 inch down pipe and miltek twin exhaust. Was wondering what do I have to do to achieve similar results.

Please share your thoughts if you have any.

 

[Izso]

run super rich. spit petrol out the exhaust. fire. and shit loads bad fc.

 

[marsha1l_v6]

run super rich. spit petrol out the exhaust. fire. and shit loads bad fc.

this..run rich..pop pop sound..

my setup run abit rich.. 3k gear 5 drop to g4 @ 4k~ ..pop pop

 

[loose_end]

Rev till 11k

 

[vr2turbo]

Probably need even richer to pop more, but don't drown the car......lol

 

[6UE5t]

They use anti lag system for the turbo.

[youtube]FeYUHXFF6FU[/youtube]

 

[6UE5t]

How it works:

[youtube]wyJn40ExwZY[/youtube]

[youtube]5g6cHs5vMRE[/youtube]

 

[y2188]

I think it can be done through fuel injector cut off time, but whether your current ECU allows you to do it I am not sure. just my 2cents.

 

[couleur]

Rich as in running higher RON fuel?

I used to run on RON100 by Petron for almost 2 years consecutively, and whenever I decelerate (take my foot off pedal), I can heard the exhaust rubble and pop.

Now im using 97 caltex, the fuel seems to be more stable, very smooth, but doesnt get that oomph like the RON100, and no more rubble and pop sound :(

Not sure whether worth paying RM40 extra for full tank.

The megane didnt blow out fire like the lancer, it was very minor, the fire only came out like 1 inch from the tip and he didnt do high rev also. As we were cruising around 80-100km/h before reaching the toll, wasnt racing or trying out impress each other.

It was quite a sight to behold...

 

[couleur]

Something like this

https://www.youtube.com/watch?v=FK1ulF7Mxa4

 

[6UE5t]

Rich as in running higher RON fuel?

I used to run on RON100 by Petron for almost 2 years consecutively, and whenever I decelerate (take my foot off pedal), I can heard the exhaust rubble and pop.

Now im using 97 caltex, the fuel seems to be more stable, very smooth, but doesnt get that oomph like the RON100, and no more rubble and pop sound :(

Not sure whether worth paying RM40 extra for full tank.

The megane didnt blow out fire like the lancer, it was very minor, the fire only came out like 1 inch from the tip and he didnt do high rev also. As we were cruising around 80-100km/h before reaching the toll, wasnt racing or trying out impress each other.

It was quite a sight to behold...

Just watch the videos about the 2 anti lag systems that I posted above, it mentioned about the running rich also and it has nothing to do with using higher octane fuel.

It's not necessarily big flames also, can be smaller ones too. See the video below, it's also not as big flames.

[youtube]qRAqSg9W6Z0[/youtube]

 

[marsha1l_v6]

Rich as in running higher RON fuel?

I used to run on RON100 by Petron ....

Not RON rating, the mixture of air/fuel ratio...AFR on rich side.

eat fuel like teh ais kaw kurg manis..but since i dnt have proper piggyback/ecu, better safe then sorry.

 

[esthapo]

Since petrol now quite expensive, u need to be rich too to run rich AFR on ur car

 

[couleur]

Ah yes, I finally understood your concept. This means I have to strengthen my manifold and also turbo to accept this antilag system?

Has anyone played with this kind of setup before?

 

[6UE5t]

Since petrol now quite expensive, u need to be rich too to run rich AFR on ur car

Actually petrol in MY by far is still the cheapest in the region, except maybe Brunei.

 

[esthapo]

Actually petrol in MY by far is still the cheapest in the region, except maybe Brunei.

Yeah ure right but thats also already feel the pain in the wallet...im running rich atm my car can only go 300++km on 60L petrol & 500++km on highway

 

[vr2turbo]

Actually petrol in MY by far is still the cheapest in the region, except maybe Brunei.

MY people used to cheaper mah.......lol

 

[6UE5t]

Problem with MY is not the fuel price but actually the high price of cars. Hence people got burdened by loans! Fuel price is damn cheap here, I don't even care much about it coz if I go back to my home country or other countries I have to pay much more for fuel then I can feel the pinch!

 

[vr2turbo]

Problem with MY is not the fuel price but actually the high price of cars. Hence people got burdened by loans! Fuel price is damn cheap here, I don't even care much about it coz if I go back to my home country or other countries I have to pay much more for fuel then I can feel the pinch!

What to do , still protecting own car industry.....

 

[sweelt]

Ah yes, I finally understood your concept. This means I have to strengthen my manifold and also turbo to accept this antilag system?

Has anyone played with this kind of setup before?

https://www.torquecars.com/tuning/anti-lag-systems.php
Pocket deep can do lah.
I still prefer subaru rumble sound.