What causes popping/"clapping" in the SRT4
#1
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What causes popping/"clapping" in the SRT4
I've been wondering for some time what causes the burble and pop on decel in an SRT4, it's very pronounced and Mopar even claims that their staged kits are tuned to increase it, so there must be a method to it. It's not quite as loud as ALS but it's definitely distinctive.
Just curious really, this isn't my "How do I get that sound in my Miata" thread
Just curious really, this isn't my "How do I get that sound in my Miata" thread
#9
put the cat as far upstream as possible and add a very long, free flowing exhaust behind it. I was doing some reading on this a while back and retarding your timing 10-15 degrees under decel (more vac than idle) will make it much more pronounced. So on MS add a line in under the idle row and retard the timing 10 degrees from the idle value. That should do it.
#10
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I don't want to make a bunch of noise, I'm just curious what makes the noise in my SRT4. Of course I know it doesn't have any mufflers, what the stock duals (long gone btw) look like, etc.
It got me thinking because a buddy of mine has a near identical SRT w/ side exit exhaust, Stage 3 ECU, catless DP etc. and his backblast on decel scares pedestrians.
Some of you are saying it's because it's rich, others that it could be lean, that there's an ignition cut involved.. so many theories.
It got me thinking because a buddy of mine has a near identical SRT w/ side exit exhaust, Stage 3 ECU, catless DP etc. and his backblast on decel scares pedestrians.
Some of you are saying it's because it's rich, others that it could be lean, that there's an ignition cut involved.. so many theories.
#18
Just like was said above...
The reason it happens on the SRT OEM is the free flowing exhaust system and the car is is factory tuned a little rich.
When MS cuts fuel when I pull off the pedal and I get some gurgle/popping in my miata. Take off the muffler and I'm sure you'd have a nice loud afterfire.
The reason it happens on the SRT OEM is the free flowing exhaust system and the car is is factory tuned a little rich.
When MS cuts fuel when I pull off the pedal and I get some gurgle/popping in my miata. Take off the muffler and I'm sure you'd have a nice loud afterfire.