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pops and bangs
- Thread starter Pasty
- Start date
172 - 249bhp @ the wheels
Probably not tbh, the FBW doesn't seem to do over run like good old cable throttle does.
Don't bother doing it either way though, I've had to replace my exhaust after blowing the baffles out the system and it gets annoying and boring after a while.
Don't bother doing it either way though, I've had to replace my exhaust after blowing the baffles out the system and it gets annoying and boring after a while.
As above, mine is on its way out now aswell 
TrackCar & F30 330d
I must still be in the honey moon period with my ITBs as i love it poping and banging
The exhaust is sily loud atm so maybe my baffels are on their way out. The exhaust has had about 30,000 miles of decattedness.
The exhaust is sily loud atm so maybe my baffels are on their way out. The exhaust has had about 30,000 miles of decattedness.
SC Ph1 172 and M140i
Our 172 does it on the limiter
172 - 249bhp @ the wheels
I seriously doubt it Brett, best asking them tbh mate.
Chris, sounds like the same as mine then, I liked them at first, but it got tiresome and embarrassing when it's doing it in traffic. On the motorway or round the lanes it's not too bad firing out 1.5 meter flames, but it gets you noticed too much...
Chris, sounds like the same as mine then, I liked them at first, but it got tiresome and embarrassing when it's doing it in traffic. On the motorway or round the lanes it's not too bad firing out 1.5 meter flames, but it gets you noticed too much...
172 - 249bhp @ the wheels
The 172 pops bangs and flames on the limiter, but it fires continuous flames for about 30+ seconds when you back off in 4th from high speeds which I only found out when I let my mate drive it lol
Martin_172
ClioSport Club Member
my ph2 used to pop flames on gearchanges when going for it and used to shoot flames when you hit the limiter in 5th (and probably other gears)
I know for certain that with the standard FBW and a decat they don't pop and bang.
After my decat is fitted on Monday, I've been reliably informed that mine could shoot flames out the back if wanted
There must be something wrong with my car then. I've broken the baffles up from all the popping and banging it's been doing.
Going by what Adam says, there's always something wrong with your car
Every standard one I've seen with a decat doesn't pop and bang. Yours must be speshul?
When the car is mapped, if the ignition is retarded slightly on the overrun it will pop and bang. So in essence, with a remap any decatted car could be made to pop flames out.
Coupe/Defender V8
Mine pops on over run between 1k - 2k like crazy since I had the supersport fitted with the bodies. I'm in the same boat as Chrispy atm - Doesn't bother me at all
Bearing in mind I don't have this lot anymore:
FBW throttle
Standard ECU
Standard FPR
Standard injectors
Standard fuel pump
Standard MAP sensor
etc etc etc
What actually limits the fuel once you lift off?
Decel fuel cut off strategy reduces the injector duration to zero in a variable amount of time/engine revolutions based on numerous factors. In a modern DBW production car the cut off will be total and ASAP to ensure emissons compliance.
It's very, very easy to make them pop and bang if you want them to. Just need to drop the decel fuel cutoff engagement point down a bit and cal the spark advance under decel to suit - instant pop, bang, cheeky flame. The above will need doing within the calibration though so if you're on the stock ECU it's not really something you can do yourself at home without spending some money.
Gaz_
ClioSport Club Member
Extreme mode
I get the odd pop and bang from mine and it's only got a cat-back system fitted at the moment, does it abit more frequent when I've got my decat fitted.
When the revs are dying down, if you blip the throttle I can get a small pop from it as well.
When the revs are dying down, if you blip the throttle I can get a small pop from it as well.
Shouldn't be from the JMS vid it's only gentle. Way over the top/poor calibration 'backfires' can damage exhaust valve seats/valves and cause engine failure if the pressure in the manifold slows the closing off or forces open an exhaust valve at the wrong point.
Prob cost you a few MPG though but then you can't have everything!
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