Test pipe?
Jan 17, 2019, 05:21 PM
#1
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Thread Starter
Test pipe?
So I’m toying with idea of replacing the stock CAT with a test pipe. Before I do I was wondering what kind of problems to expect What kind of HP gains? Will I need to retune the ecu? Backfiring? Etc. Any suggestions on a good brand would be appreciated as well. Thanks!
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MinusPrevious (Jan 17, 2019)
Jan 17, 2019, 05:29 PM
#2
My first exhaust mod was a full 3" system & using a HFC. After some time i woke up (haha) & did the TP & the retune. Figure somewhere in the neighborhood of 10-15whp deleting the CAT
No back fires but if youre on reg gas its just like driving behind a 1970's pre CAT car
Certainly a bit more decibel out of the pipe
Now, running E85 really helps w/the smell
I run an Invidia T-pipe but theyre all the same (sort of)
No back fires but if youre on reg gas its just like driving behind a 1970's pre CAT car
Certainly a bit more decibel out of the pipeNow, running E85 really helps w/the smell
I run an Invidia T-pipe but theyre all the same (sort of)
Last edited by MinusPrevious; Jan 17, 2019 at 06:18 PM.
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Evo Inertia (Jan 17, 2019)
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MinusPrevious (Jan 17, 2019)
Jan 17, 2019, 06:49 PM
#4
Yes you would have to put the stock CAT on if your shop does a visual. There are tunes avail where your emissions monitors are all active & you should be able to pass (depends on how CO tests of course)
If your EvO is just a weekender, i say go for it, but if its your DD, you may want to run a HFC & be nice to your fellow motorist
If your EvO is just a weekender, i say go for it, but if its your DD, you may want to run a HFC & be nice to your fellow motorist
Last edited by MinusPrevious; Jan 17, 2019 at 07:58 PM.
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