How to make a 2012 ISF exhaust crackle & burbles
11-05-17, 10:00 PM
#1
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How to make a 2012 ISF exhaust crackle & burbles
I have a 2012 Lexus ISF and I really miss the crackle and pop of my f80 M3 can someone point me to the different options available for the F if any? thanks!
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Huligan99 (12-13-19)
we just want more pops/crackles!!!!
11-06-17, 08:48 AM
#6
Excessive lean or rich conditions tend reburn when air is added (exhaust tips exposed). However, excesssive rich or lean well, one kills your cats, the other your engine....
The fuel map on my street bike is purposefully rich down low to overcome the OEM dead band where they neutered the fuel map for optimal economy thus leaving a deadband or abrupt on when it does rewet. Adding fuel off idle to 3500 helps and she crackles lots on decel.
A downstream exhaust leak can add enough O2 to create a reburn too.
The fuel map on my street bike is purposefully rich down low to overcome the OEM dead band where they neutered the fuel map for optimal economy thus leaving a deadband or abrupt on when it does rewet. Adding fuel off idle to 3500 helps and she crackles lots on decel.
A downstream exhaust leak can add enough O2 to create a reburn too.
11-06-17, 01:52 PM
#7
Excessive lean or rich conditions tend reburn when air is added (exhaust tips exposed). However, excesssive rich or lean well, one kills your cats, the other your engine....
The fuel map on my street bike is purposefully rich down low to overcome the OEM dead band where they neutered the fuel map for optimal economy thus leaving a deadband or abrupt on when it does rewet. Adding fuel off idle to 3500 helps and she crackles lots on decel.
A downstream exhaust leak can add enough O2 to create a reburn too.
The fuel map on my street bike is purposefully rich down low to overcome the OEM dead band where they neutered the fuel map for optimal economy thus leaving a deadband or abrupt on when it does rewet. Adding fuel off idle to 3500 helps and she crackles lots on decel.
A downstream exhaust leak can add enough O2 to create a reburn too.
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11-06-17, 09:46 PM
#13
To answer the OP, you need an overrun tune. Considering there’s only a handful of tuners not sure if anyone is going to take the time to create one. Maybe RR can offer an alternative tune option?
