Jump to content
SAU Community

Recommended Posts

Before anyone starts, yes I barely know anything and yes I have gone back and read other posts.

I found this video on youtube (

), this guy has a custom built 2.5" mild steel mandrel bent, high flow cat, high flow resonator and high flow muffler with 4" tip, and it sounds pretty good.

so what i wanted to know was, will he gain much?

and if you change the tip into a canon will there be a dramatic difference in sound, like a huge difference?

Edited by R34-Daz
Link to comment
https://www.sau.com.au/forums/topic/302078-na-r34-exhaust/
Share on other sites

You will gain a little bit of power going from the stock R34 N/A exhaust which I think is 2" in diameter to a mild steel 2.5" exhaust. You will gain a bit more power if you have an aftermarket exhaust all the way through from the extractors to cannon. High flow cat and resonator will add to the performance. Dont expect wild gains with this setup alone though.

The cannon solely will make very little difference to performance, you will most likely gain some rumble!

Link to comment
https://www.sau.com.au/forums/topic/302078-na-r34-exhaust/#findComment-5011598
Share on other sites

gettin lots of noticable power outta an N/A costs lots n lots of money... unless ur aiming to get as much power as possible outta the car then just have a nice 2.5", mild steel, mandrel bent cat back with a big tip or cannon... doin stuff like extractors n hi - flo cats costs abit more for not much real benefits unless ur squeezing power outta it

Link to comment
https://www.sau.com.au/forums/topic/302078-na-r34-exhaust/#findComment-5011753
Share on other sites

all i noticed was it made it drone 100x more lol... its pretty pointless doing a really hi-flowing cat back n leaving the extractors stock as yeh they will be more of a restriction than a good stock cat

Link to comment
https://www.sau.com.au/forums/topic/302078-na-r34-exhaust/#findComment-5013909
Share on other sites

^^ pretty sure the standard is 2.25"

I've done extractors, high flow ressy, high flow cat, 2.5" mild mandrel bent steel with a 3" tip.

Downlow power is the same but once it hits the higher rev range, around 3000-4000rpm it takes off compared to before

Cost me around $2,500 including DKNE extractors.

Link to comment
https://www.sau.com.au/forums/topic/302078-na-r34-exhaust/#findComment-5014418
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Possibly avoid using a Cometic one unless the deck/head surface are perfectly flat. I did have a look just then and forgiving gaskets such as Tomei or Nitto don't exist for the FJ20, however the Bar-Tek or Kameari ones look good and might do the trick.
    • Because pipe threads for pipe things. M threads for bolt things. Throw some teflon sealant onto it and dust your hands off knowing you did the right thing, instead of going twice around the block to achieve a result using the wrong things. Of course, all of these solutions are ignoring the fact that the minimum thread pitch we're talking about here is 1.25mm, with the 1/4" in NPT or BPS being out around 1.4mm. You will need to know that the boss you're tapping has enough thickness for at least a few threads. That's one of the reasons that 1/8" is commonly used - because the pitch is <1mm. And why would you look to use 1/4" NPT in a BSP country anyway? Ugh.
    • Just throwing around ideas, does it need to be in the compressor cover? Why not the hot side piping?
    • 1/8NPT drill size = 8.7mm. Since the hole got messed up by me, it’s probably around 9mm.    So 1/4” NPT would be next step. A drill size of around 11mm would be preferred there which is not way of my M12 (drill 10.5mm and tap M12 threads) 
    • 3 Kids are starting to hit that ages. I wanted to get them something special to learn on, put down the screens and have some fun. 4Door 2001 R34DE Black Pearl GV1 Jap Import, AU 2nd owner. Pre Work done. Suspension - Wheels Pedders SportsRyder Coilovers   Wheels TSG Spokey Boi 18'x9.5"+15 Body JASI Aero 4 door Type R Full Kit LED Conversion - Parker, Blinkers, & Reverse Exhaust Hurricane Headers 100 CPI high flow cat 2.5" Piping Cannon muffler Internal Bride low max stradia ii - front seats  Bride RO seat base and Rails (R/H) Cube short shifter LED Conversion - Interior   
×
×
  • Create New...