Headers or Test pipes or both with stock exhaust?

After_Shock

How can it make it sound like crap when its still connected to the stock exhaust with stock mufflers in?

I dont want to change the stock exhaust as I may have issues getting the car through its yearly test here, however a touch more noise would be nice and also freeing up a little bit of power would also be good.

andre12031948

I meant to say if you REPLACE your CATS with test tubes or headers that eliminate cats, it will sound raspy & crappy.

That's what happened to me. After changing my cats with test pipes I almost asked my installer to switch back. He told me, you'll get used to it
"RASPY"

I would recommend listening to them online if not possible in person.

After_Shock

Dont suppose you got a video of yours when you had them on did you?

What did you change to?

After_Shock

As I thought as the stock design does look good, I may drop in higher flowing panels at some point but the amount of sand where I live it might be best to stick with the stock ones!!

tranceformer

I have the following setup:

Fast Intentions longtube headers
Motordyne XYZ-pipe, w/ cat

exhaust is stock other than those parts. yes, it's not the most ideal setup for all-out HP.

just cruising around, light throttle and low rpm my exhaust is just a hair louder than stock. just enough to let you know it's not stock.

once you put your foot into the pedal it comes alive, but not super loud that any cop within a mile will hear you coming.

I'll have to break out the gopro one of these nights...

__________________
Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times

After_Shock

If you do get a chance to make a vid it would be interesting to hear!

critical

You'll blow your stock exhaust with test pipes. Better to get both

__________________
Quaife w/ gears |Stillen Gen 3|SOLD FI Resonated Test Pipes |SOLD FI 18'' | 25row Stillen Race | Progress 35mm/25mm sways | Swifts/Koni|Volk G25's| Stoptech SS lines||SPL Front/Rear Arms|

After_Shock

Could you expand on that a little?

andre12031948

I didn't blow anything or anyone

critical

two of my mufflers went bad and started rattling.

you didn't blow anyone...ok whatever you say.

__________________
Quaife w/ gears |Stillen Gen 3|SOLD FI Resonated Test Pipes |SOLD FI 18'' | 25row Stillen Race | Progress 35mm/25mm sways | Swifts/Koni|Volk G25's| Stoptech SS lines||SPL Front/Rear Arms|

luigi90210

was that because of your test pipes?

__________________
SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock

critical

i suspect so

__________________
Quaife w/ gears |Stillen Gen 3|SOLD FI Resonated Test Pipes |SOLD FI 18'' | 25row Stillen Race | Progress 35mm/25mm sways | Swifts/Koni|Volk G25's| Stoptech SS lines||SPL Front/Rear Arms|

andre12031948

I should recover from my head trauma by early spring.

Thanks for your participation that is so crucial & helpful to me.

Megan370z

I also confirm this statement.

My first one didn't last the weekend at the race school.
the second one that I got a year ago which was almost brand new, didn't last very long doing some street tuning. It was not as bad as the first one but its starting...
this was done with shorty headers and TP on the first one and the second one was using the PPE header.

I suspect the internal of the stock muffler cannot handle the increased flow/heat and has a very good chance to start rattling

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Megan Journal *Click Me* ....................One Man Team Motorsport *Click Me*

luigi90210

while im not doubting the stock muffler blowing

test pipes make your exhaust run cooler since there is no cat, cats heat up the exhaust since they need to run at 600F+ in order to work

i think it cant handle the extra flow if anything

__________________
SOLD 370z
New Car:classified
DD:2011 Mini Cooper S stock