Pops and bangs

[Jasonn]

Evening all,

Following my unsuccessful foray into coding, I've been looking at remaps (getting someone else to do it though) .

One thing I have noticed is that there is a significantly increased banging and popping from the demo videos. I'm not a massive fan but the power increases are very tempting - I'm of an age where weekends were spent with a flexi drive, grinding the cylinder heads and swapping cams for a comparatively minor increase. e

My question with the popping and banging is whether this damages the exhaust system - I remember blowing the back box of my capri into oblivion back in the day

 

[Anonymous]

Simple answer appears not...I surmise that there is a fractional bleed of fuel to encourage the spits n farts under power ..the bangs you refer to were mostly on the over run accumulating fuel via the pilot jet which was unburnt until a critical point..a bit like the old cocoa tin fillled with mains gas..hole in top n bottom ..small flame at top..period of time then bang when explosive ratio reached..

 

[buzyg]

Unburned fuel on the over run gets hot and ignites causing a small explosion in your exhaust system. My engineers brain tells me that explosions can cause damage. In a new stainless exhaust it is never going to cause an issue. In an old rusty thing it could blow a nice wee whole in it and make it really loud.

 

[Boltz]

My 18 has been stage 2 mapped by Celtic and significantly more power obtained but it does not sound any different !!!!!

 

[Jasonn]

Thanks for the advice guys

I was looking at both Celtic and Quantum for the remap. There is a Quantum franchise near me, but he seems to make a big thing about the bangs (must be an East London /Essex thing)

 

[Anonymous]

I’ve used Celtic and don’t get any bangs,, just a bit of a spit when charging hard through the 8 speed ZF box

 

[Smartbear]

I’ve used Celtic and don’t get any bangs,, just a bit of a spit when charging hard through the 8 speed ZF box

Same here with Evolve, no histrionics programmed in
Rob

 

[enuff_zed]

I’ve used Celtic and don’t get any bangs,, just a bit of a spit when charging hard through the 8 speed ZF box

Same here with Evolve, no histrionics programmed in
Rob

Subtlety is the key.....for me anyway.

 

[Anonymous]

I’ve used Celtic and don’t get any bangs,, just a bit of a spit when charging hard through the 8 speed ZF box

Same here with Evolve, no histrionics programmed in
Rob

Subtlety is the key.....for me anyway.

Anyone who has a Panavia Tornade as their avatar is not a person believing in subtlety

One of the few aircraft that rendered the Warsaw Pact’s radars redundant by announcing their presence from many miles away!

 

[enuff_zed]

Same here with Evolve, no histrionics programmed in
Rob

Subtlety is the key.....for me anyway.

Anyone who has a Panavia Tornade as their avatar is not a person believing in subtlety

One of the few aircraft that rendered the Warsaw Pact’s radars redundant by announcing their presence from many miles away!

Ha ha.
Yeah, well, that is ZA601, which I was lucky enough to get a 'jolly' in way back in the day when I was on 617.
The issue with any aircraft going supersonic is the shockwave spikes on the radar, hence the slower and lower approach.
I did a couple of detachments to 'Red Flag' at Nellis AFB, where all the various NATO nations attack and defend various ground sites. Everything was linked through special 'acquisition' modules so the controllers could see the overall picture.
The ground batteries continually complained that, even though they could see down to 50ft on their radar, the only time they saw a Tornado was after the pilots were briefed to pop up a bit to give the defenders a chance

Apparently, the generation of RAF before my time used to upset the yanks by hiding two Buccaneers under the wings of a Vulcan. As soon as the radar got a lock on, the Vulcan turned away and the Buccs descended until they were invisible.

 

[Anonymous]

Subtlety is the key.....for me anyway.

Anyone who has a Panavia Tornade as their avatar is not a person believing in subtlety

One of the few aircraft that rendered the Warsaw Pact’s radars redundant by announcing their presence from many miles away!

Ha ha.
Yeah, well, that is ZA601, which I was lucky enough to get a 'jolly' in way back in the day when I was on 617.
The issue with any aircraft going supersonic is the shockwave spikes on the radar, hence the slower and lower approach.
I did a couple of detachments to 'Red Flag' at Nellis AFB, where all the various NATO nations attack and defend various ground sites. Everything was linked through special 'acquisition' modules so the controllers could see the overall picture.
The ground batteries continually complained that, even though they could see down to 50ft on their radar, the only time they saw a Tornado was after the pilots were briefed to pop up a bit to give the defenders a chance

Apparently, the generation of RAF before my time used to upset the yanks by hiding two Buccaneers under the wings of a Vulcan. As soon as the radar got a lock on, the Vulcan turned away and the Buccs descended until they were invisible.

I wasn't doubting their GFT ability it was the NOISE!!!

I remember at Marshalls Cambridge held an informal air show and a Tornado attempted to stay in the circuit at 800 ft with after burners on..

After he left, my ears continues to ring for about 30 minutes and as the tinitus diminished it was replaced with the sound of car and house alarms all over Cambridge

 

[enuff_zed]

Anyone who has a Panavia Tornade as their avatar is not a person believing in subtlety

One of the few aircraft that rendered the Warsaw Pact’s radars redundant by announcing their presence from many miles away!

Ha ha.
Yeah, well, that is ZA601, which I was lucky enough to get a 'jolly' in way back in the day when I was on 617.
The issue with any aircraft going supersonic is the shockwave spikes on the radar, hence the slower and lower approach.
I did a couple of detachments to 'Red Flag' at Nellis AFB, where all the various NATO nations attack and defend various ground sites. Everything was linked through special 'acquisition' modules so the controllers could see the overall picture.
The ground batteries continually complained that, even though they could see down to 50ft on their radar, the only time they saw a Tornado was after the pilots were briefed to pop up a bit to give the defenders a chance

Apparently, the generation of RAF before my time used to upset the yanks by hiding two Buccaneers under the wings of a Vulcan. As soon as the radar got a lock on, the Vulcan turned away and the Buccs descended until they were invisible.

I wasn't doubting their GFT ability it was the NOISE!!!

I remember at Marshalls Cambridge held an informal air show and a Tornado attempted to stay in the circuit at 800 ft with after burners on..

After he left, my ears continues to ring for about 30 minutes and as the tinitus diminished it was replaced with the sound of car and house alarms all over Cambridge

Oooh! You'll upset us RAF types
Afterburners are for the colonial cousins, we call it reheat. Can be a tad noisy I admit, but at least the fuel consumption is such that it doesn't last long!!!
On cold winter nights, in the wee small hours of the morning, after changing an engine, we used to sit under the engine doors to keep warm during the test runs. Got quite warm but surprisingly it was not that noisy under there. Just had to remember to move before they came out of reheat as they dumped all the spare fuel out of the reheat fuel rail, straight out the bottom! Good way to catch out the new boys. :roll:

 

[mcbutler]

The true purpose of this feature can be seen in Rally cars and the like. I recently had the luck to be driven in a Rally Mitsubishi Evo belonging to the guy who does mods on my car. He demonstrated the various modes of the car and jesus was it fast, made my stage 1 35i feel like a slug.
Anyhow I asked about the popping and banging and it is actually a functional process in the manual cars. The fuel is ignited in the exhaust upstream of the turbo, the 'explosion' keeps the turbos at full speed during the fraction of a second it takes to change gear!
I always thought it sounded sh_t no matter what car its on but now I know better.

 

[Anonymous]

Interesting article here about pops n bangs in detail..

https://www.fastcar.co.uk/tuning-tech-guides/pop-and-bang-maps/

As usual, for most, just making more noise..