"I'm a idiot" engine maps - damage?

"I'm a idiot" engine maps - damage?

Author
Discussion

donkmeister

Original Poster:

2,472 posts

55 months

Monday 29th June
quotequote all
As the fourth mighty Fiesta of the afternoon spat and popped its way past my house from its beast of a 1 litre engine it got me to thinking... Do "hey there, I'm a tosser" maps cause any damage to the car they are running on?
Obviously there are plenty of cars that occasionally flame and crackle on the overrun as a byproduct of the way they are tuned, but it's only an occasional thing... Whereas "crackle" maps are doing it all the time, and the people with them seem to relish getting on and off the throttle all the time to get their money's worth.
So, after a few thousand miles of this do these cars develop problems they wouldn't otherwise have had?

Phil Dicky

6,075 posts

218 months

Monday 29th June
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There's one such tosser a few doors down from me, who may well be getting his st car shoved up his arse after popping and banging home at 1am.

SuperPav

582 posts

80 months

Monday 29th June
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My fiat 500 pops and bangs any time i lift off the throttle, no matter how mildly or slowly.

Guess I best get that carb tuned/cleaned out before I get lynched....


Granted, you'd do well to hear the pop - two cylinders don't make for a big bang.

Leon R

662 posts

51 months

Monday 29th June
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My BMW pops and bangs if the exhaust gets hot enough, don't think it causes any damage.

ninjacost

956 posts

177 months

Monday 29th June
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I had my Mini gp2 mapped and if I press sport button it does it , performance Is the same with sport mode off ,needless to say its not used , find it a bit ott , maybe ok on trackdays .I didn't request it, I hasten to add .

carinaman

15,332 posts

127 months

Monday 29th June
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A map that makes a car exhaust pop and bang for dramatic effect is as lame as piped fake engine noises coming out of the speakers in the car?

Bathroom_Security

1,697 posts

72 months

Monday 29th June
quotequote all
Phil Dicky said:
There's one such tosser a few doors down from me, who may well be getting his st car shoved up his arse after popping and banging home at 1am.
I bet you don't have the balls to confront him, instead you've come to bh about it on a forum where its safe

grumbledoak

26,088 posts

188 months

Monday 29th June
quotequote all
donkmeister said:
So, after a few thousand miles of this do these cars develop problems they wouldn't otherwise have had?
If configured by the manufacturer, probably not.

Sadly.

Sheetmaself

4,492 posts

153 months

Monday 29th June
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Whoosh Parrot for me, or....................

Johnnytheboy

20,142 posts

141 months

Monday 29th June
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8 posts in and no one has addressed the OP's question.

I have heard tales that deliberate 'pops and bangs' maps can damage the engine/turbo, though I can't fathom the science as I'd assume all the activity takes place in the exhaust.

RazerSauber

846 posts

15 months

Monday 29th June
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Unless it's causing scorching or something in the cat (assuming it hasn't been removed and mapped out) then I doubt it. It's just a flame in a place that's designed to be very hot. Maybe it'll cause issues with the lambda sensors? They say you have to be super careful with them during installation but then they go and shoot flames a few feet from them. Never got how that works..

fatboy b

8,574 posts

171 months

Monday 29th June
quotequote all
Bathroom_Security said:
Phil Dicky said:
There's one such tosser a few doors down from me, who may well be getting his st car shoved up his arse after popping and banging home at 1am.
I bet you don't have the balls to confront him, instead you've come to bh about it on a forum where its safe
Pathetic reply.

Boosted LS1

19,055 posts

215 months

Monday 29th June
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Unburnt fuel may not be good for the cat but it could be a while before it's damaged?

Speedgelb

579 posts

108 months

Monday 29th June
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Who changed the title?! roflrofl

maxdb

1,356 posts

112 months

Monday 29th June
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I've heard that a number of Mazda MPS owners had engine damage after installing WOT box's for pops and bangs. Cats can get destroyed and bore wash is also possible. Plus you will look like a knob.

A1VDY

2,449 posts

82 months

Monday 29th June
quotequote all
Boosted LS1 said:
Unburnt fuel may not be good for the cat but it could be a while before it's damaged?
Youre right, it's not good for the cat and neither exhaust silencers which in some cases can literally blow them apart.
This is how I know.... tuned (yes tuned) Fiat 126, ported and skimmed head, big Inlet manifold 28/36 twin choke weber and modified exhaust box (now need another one)
Take it to around 40mph turn off the ignition, pull on the choke lever and pump the throttle, switch ignition back on and usually its just a big bang. More rigouous pumping of throttle last time resulted in a small explosion leaving the debris from the exhaust box on the road behind me.. biggrin


gazza285

6,306 posts

163 months

Monday 29th June
quotequote all
A1VDY said:
Youre right, it's not good for the cat and neither exhaust silencers which in some cases can literally blow them apart.
This is how I know.... tuned (yes tuned) Fiat 126, ported and skimmed head, big Inlet manifold 28/36 twin choke weber and modified exhaust box (now need another one)
Take it to around 40mph turn off the ignition, pull on the choke lever and pump the throttle, switch ignition back on and usually its just a big bang. More rigouous pumping of throttle last time resulted in a small explosion leaving the debris from the exhaust box on the road behind me.. biggrin
Reminds me of my ancient Nissan Sunny, it had a badly blowing exhaust, and upon seeing a copper on the other side of the road, I switched off the ignition while I coasted past him, but left the car in gear. After a suitable distance I turned the ignition back on, and ignited all the unburnt fuel now in the exhaust. Very stealthy.

jsf

17,118 posts

191 months

Monday 29th June
quotequote all
To achieve it you cut the fuel injected on closed throttle slightly over the base value (assuming you don't have overrun fuel cut applied which cuts 100% fuel so cant do pops and bangs), you also retard the ignition and open up the idle control valve or if electronic throttle open the throttle slightly.

That fires the fuel later than normal so the engine doesn't produce any torque, but instead fires the fuel late, making a racket in the exhaust system. Compared to under normal load the energy is much less, what you have to be careful of is getting the EGT's elevated by not matching the airflow and fuel, you really need an EGT monitor that cuts the pops and bangs function if the EGT's climb too high.

If done properly it shouldn't damage anything, if done poorly you can destroy the exhaust valves, exhaust headers, turbo and cat.

I hate it, totally antisocial bag of spanners, just like stupidly loud exhaust systems.

thebraketester

9,501 posts

93 months

Monday 29th June
quotequote all
donkmeister said:
As the fourth mighty Fiesta of the afternoon spat and popped its way past my house from its beast of a 1 litre engine it got me to thinking... Do "hey there, I'm a tosser" maps cause any damage to the car they are running on?
Obviously there are plenty of cars that occasionally flame and crackle on the overrun as a byproduct of the way they are tuned, but it's only an occasional thing... Whereas "crackle" maps are doing it all the time, and the people with them seem to relish getting on and off the throttle all the time to get their money's worth.
So, after a few thousand miles of this do these cars develop problems they wouldn't otherwise have had?
Haha... I very nearly started a thread of similar vain yesterday. Saw a fiesta yesterday drive in front of me at a RaB. After just exiting the RaB... sounded like a fking shot gun, and not once, about 6 times.

Literally everyone with a fiesta/focus/Astra near me has this stty mapping that quite frankly is laughable.

I understand, get your car mapped... mines mapped... but it doesn’t need to have that wky stty pop pop bang bang bks.

TheAngryDog

10,140 posts

164 months

Tuesday 30th June
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It depends how they're being generated. I am aware that it can damage engines that have alusil liners.