# Loss of power
**URL:** https://forums.speedlife.net/t/loss-of-power/107818
**Category:** SON240sx Automotive
**Created:** [July 20, 2007, 7:31am UTC](https://forums.speedlife.net/t/loss-of-power/107818 "2007-07-20T07:31:30Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Polar\_s13](https://forums.speedlife.net/u/Polar_s13)
#### Post date: [July 20, 2007, 7:31am UTC](https://forums.speedlife.net/t/loss-of-power/107818/1 "2007-07-20T07:31:30Z")
Hey, I just got my 3" high flow catalytic convertor installed and I feel a loss of power is that possible thet the cat made my car lose power or maybe i need a tune up or something.
I have a blitz nur spec r catback also.
Let me know, Thanks!
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### Author:  [@fluidd](https://forums.speedlife.net/u/fluidd)
#### Post date: [July 20, 2007, 8:45am UTC](https://forums.speedlife.net/t/loss-of-power/107818/2 "2007-07-20T08:45:54Z")
how is that nur spec r exhaust btw… thinking of getting it for the s14
i bet its alot louder on the s13 though
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### Author:  [@S13GG](https://forums.speedlife.net/u/S13GG)
#### Post date: [July 20, 2007, 9:02am UTC](https://forums.speedlife.net/t/loss-of-power/107818/3 "2007-07-20T09:02:21Z")
if you went from no cat to a cat, yes your going to lose power…
how much I don’t know, %10?
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### Author:  [@Polar\_s13](https://forums.speedlife.net/u/Polar_s13)
#### Post date: [July 20, 2007, 9:16am UTC](https://forums.speedlife.net/t/loss-of-power/107818/4 "2007-07-20T09:16:53Z")
The Blitz nur spec r is amazing suggest you buy it! Also I went from a cat but it was destroyed had no gaskets and was basically turning into dust.
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### Author:  [@mr200](https://forums.speedlife.net/u/mr200)
#### Post date: [July 20, 2007, 1:54pm UTC](https://forums.speedlife.net/t/loss-of-power/107818/5 "2007-07-20T13:54:50Z")
Your cat may have been plugged. You may have lost torque by going to a free flowing exhaust on a stock KA. NA motors like backpressure.