Headers or Test pipes or both with stock exhaust?

After_Shock · 12-15-2013, 01:02 AM

Quote:

Originally Posted by Chuy

I run K&N drop in, I did not notice a change in anything. I later bought HPS silicone tubes and still no difference.

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!!

After_Shock · 12-15-2013, 01:05 AM

Quote:

Originally Posted by andre12031948

test pipes or after market headers when driven on the street make the cars sound like chit. Raspy, crappy, chit!!!! So I don't get it

If you're looking just to sound loud then take the muffler off.

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.

After_Shock · 12-15-2013, 01:06 AM

Quote:

Originally Posted by 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...

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

andre12031948 · 12-15-2013, 02:55 AM

Quote:

Originally Posted by 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.

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 · 12-15-2013, 03:05 AM

Quote:

Originally Posted by 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.

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

What did you change to?

critical · 12-15-2013, 06:42 AM

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

After_Shock · 12-15-2013, 06:46 AM

Quote:

Originally Posted by critical

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

Could you expand on that a little?

andre12031948 · 12-15-2013, 12:45 PM

Quote:

Originally Posted by critical

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

I didn't blow anything or anyone

luigi90210 · 12-15-2013, 01:02 PM

Lmao critical.

He is right, you should get a new exhaust.

critical · 12-15-2013, 03:07 PM

Quote:

Originally Posted by After_Shock

Could you expand on that a little?

two of my mufflers went bad and started rattling.

Quote:

Originally Posted by andre12031948

I didn't blow anything or anyone

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

luigi90210 · 12-15-2013, 03:20 PM

Quote:

Originally Posted by critical

two of my mufflers went bad and started rattling.

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

was that because of your test pipes?

critical · 12-15-2013, 03:29 PM

Quote:

Originally Posted by luigi90210

was that because of your test pipes?

i suspect so

andre12031948 · 12-15-2013, 03:39 PM

I should recover from my head trauma by early spring.

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

Megan370z · 12-15-2013, 03:40 PM

Quote:

Originally Posted by critical

two of my mufflers went bad and started rattling.

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

luigi90210 · 12-15-2013, 04:10 PM

Quote:

Originally Posted by Megan370z

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

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

12-15-2013, 06:42 AM	#36 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 16	You'll blow your stock exhaust with test pipes. Better to get both luigi90210 likes this. __________________ 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\|

12-15-2013, 01:02 PM	#39 (permalink)
luigi90210 A True Z Fanatic Join Date: Apr 2012 Location: San Diego CA Posts: 1,103 Drives: Classified Rep Power: 16	Lmao critical. He is right, you should get a new exhaust. __________________ SOLD 370z New Car:classified DD:2011 Mini Cooper S stock Last edited by luigi90210; 12-15-2013 at 03:19 PM.

12-15-2013, 03:39 PM	#43 (permalink)
andre12031948 Banned Join Date: Feb 2011 Location: monticello new york 127 Posts: 1,095 Drives: 08 350z black 6m/t Rep Power: 0	between posting here on 370z.com & my strip club adventures I should recover from my head trauma by early spring. Thanks for your participation that is so crucial & helpful to me.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Test pipes for the 370z with stock exhaust	mr_desmo	Intake/Exhaust	9	11-28-2015 09:26 PM
Momentum headers, test pipes, exhaust	Supahonky	Wanted	0	06-21-2013 11:05 PM
Test pipes on stock exhaust?	AlphaSnacks	Intake/Exhaust	14	12-24-2010 01:37 AM
stock exhaust with test pipes	PR370z	Intake/Exhaust	3	10-26-2010 07:42 PM