Fiesta ST - pops and bangs for starter, main and desert?
Discussion
Hey guys,
One of my friends is an avid Fiesta ST fan, he had an 04 plate ST that he spent a bit of cash on, then he traded it for an Impreza which barely lasted a month before he trade that for another ST. The current one he has is an absolute minter, super-clean, perfectly standard when he got it and low miles.
He added a K&N induction kit a few weeks back, which certainly made the noise a bit more interesting, then a few days ago added a custom exhaust he got from ebay. It had no centre pipe and a medium-sized backbox with not much in the way of baffling. It was not as loud as my Civic Type R, which runs a fully unsilenced straight pipe catback, but it popped and banged like crazy - it sounded like a Chinese firework factory going down in flames! I had a ride in this car, and it sounded like it had anti-lag - clusters of pops, crackles and bangs every time the throttle closed, almost from the word go. My Type R often pops and bangs once the exhaust is "up to temp" and hot enough to flash the fuel off, but the ST was crazy.
This proved to be too loud for my friend, so he bought a Milltek non-resonated a day later and had it fitted this afternoon. I gave him a lift to the garage to pick his car up and when he started it up and gave it a rev, pops and bangs as usual from a stationary car. I followed him home, and while I could not hear him at all, as my car is significantly louder than his Milltek'd Fiesta, it did get my wondering, is the standard Fiesta ST map fuel heavy? Have any other ST owners experienced this? I've heard loads of cars with unsilenced exhausts, but the pops and bangs from a Fiesta ST are something else! Does the ST come as standard with a map that fuels heavily on a closing throttle? Could this be the reason for the frankly poor mpg
ower figures the car achieves?
Great cars btw, definitely an ST fan here!
One of my friends is an avid Fiesta ST fan, he had an 04 plate ST that he spent a bit of cash on, then he traded it for an Impreza which barely lasted a month before he trade that for another ST. The current one he has is an absolute minter, super-clean, perfectly standard when he got it and low miles.
He added a K&N induction kit a few weeks back, which certainly made the noise a bit more interesting, then a few days ago added a custom exhaust he got from ebay. It had no centre pipe and a medium-sized backbox with not much in the way of baffling. It was not as loud as my Civic Type R, which runs a fully unsilenced straight pipe catback, but it popped and banged like crazy - it sounded like a Chinese firework factory going down in flames! I had a ride in this car, and it sounded like it had anti-lag - clusters of pops, crackles and bangs every time the throttle closed, almost from the word go. My Type R often pops and bangs once the exhaust is "up to temp" and hot enough to flash the fuel off, but the ST was crazy.
This proved to be too loud for my friend, so he bought a Milltek non-resonated a day later and had it fitted this afternoon. I gave him a lift to the garage to pick his car up and when he started it up and gave it a rev, pops and bangs as usual from a stationary car. I followed him home, and while I could not hear him at all, as my car is significantly louder than his Milltek'd Fiesta, it did get my wondering, is the standard Fiesta ST map fuel heavy? Have any other ST owners experienced this? I've heard loads of cars with unsilenced exhausts, but the pops and bangs from a Fiesta ST are something else! Does the ST come as standard with a map that fuels heavily on a closing throttle? Could this be the reason for the frankly poor mpg
ower figures the car achieves?Great cars btw, definitely an ST fan here!
My Fiesta ST has a standard exhaust and you can even hear that popping quietly when revving it up, ordered a Milltek cat-back today though so hopefully be much louder 
But yes, the Fiesta naturally runs very rich.
Check this out for a popping and banging ST thoughhttp://www.youtube.com/watch?v=MmNDGcRiAao
But yes, the Fiesta naturally runs very rich.
Check this out for a popping and banging ST though
http://www.youtube.com/watch?v=MmNDGcRiAaoI also have a non-res milltek on my ST, when it gets hot it bangs crackles and pops when you let off the throttle at about 3-3.5k ( will do it at any rev but this amount does it the most )
MPG is still 30 so its all good
Cant answer the question as to why they would be overfuelling from standard, id say as they get modified the computer does its best to sort itself out with the modifications. Normally a remap will sort it out
And Adam, yes it is
MPG is still 30 so its all good
Cant answer the question as to why they would be overfuelling from standard, id say as they get modified the computer does its best to sort itself out with the modifications. Normally a remap will sort it out And Adam, yes it is
ezi said:
My Fiesta ST has a standard exhaust and you can even hear that popping quietly when revving it up, ordered a Milltek cat-back today though so hopefully be much louder
But yes, the Fiesta naturally runs very rich.
Check this out for a popping and banging ST thoughhttp://www.youtube.com/watch?v=MmNDGcRiAao
I did have a bit of a feeling that they had a fairly rich map - I don't think it's a problem as such, fwiw I think the pops and bangs sound great but they were doing my friend's head in a bit, they really did sound like antilag and all he did was put a straight through exhaust on But yes, the Fiesta naturally runs very rich.
Check this out for a popping and banging ST though
http://www.youtube.com/watch?v=MmNDGcRiAao
The Milltek non-res is a great bit of kit though, not very loud imo (neither was the Milltek I had on my Cupra R though, must be a Milltek thing) but the build quality is great and the tone on the Fiesta is fantastic. I think an unsilenced exhaust is a bit much on an ST, whereas on a Japanese car it suits it much better, so imo the Milltek is probably the best exhaust going for the ST, you won't be disappointed.
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