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Dynomax muffler elimination kit revs high when changing gears

ericpascual

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I installed this muffler elimination pipe but I notice I rev high changing gears anyone know why? Between 2500-3000 and sometimes it doesn’t even switch into next gear just revs pretty high.
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Jlmoe

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I installed this muffler elimination pipe but I notice I rev high changing gears anyone know why? Between 2500-3000 and sometimes it doesn’t even switch into next gear just revs pretty high.
Exhaust will not affect the way your transmission behaves, its just a muffler delete. You may be noticing the higher revs due to the louder exhaust sound.

Mine now makes me notice downshifts because of the added sound.
 
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ericpascual

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Exhaust will not affect the way your transmission behaves, its just a muffler delete. You may be noticing the higher revs due to the louder exhaust sound.

Mine now makes me notice downshifts because of the added sound.
Can dealerships reprogram your speedo when you get 35s put on?
 
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ericpascual

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Yes, or you could get a calibration unit like a Tazer mini or an AEV procal
Last question if you know, do you think you could use jk aftermarket rims on a jl? Just gotta use spline lug nuts?
 

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Jlmoe

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Last question if you know, do you think you could use jk aftermarket rims on a jl? Just gotta use spline lug nuts?
I'm no wheel expert but Yes, most JK wheels will work on the JL

Just different lug nuts
 

greenerobnmu

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Exhaust will not affect the way your transmission behaves, its just a muffler delete. .
Yes it will in a sense. The tranny will work as directed by the computer. The back pressure reduction from the pipe kit casues load changes in the system which will absolutely effect shift points. Plus it will seem more dramatic due to the sound increase.
 

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Mine sounds and shifts great with it . Love it
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