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i know i saw it somewhere. i will sus it out and let you know. the only skyline i've heard that wouldn't be over the db rating would be my mates. it has a 3" jasma with the double muffler. it has a center resonater and the rear muffler is an oval muffler. it goes into the muffler as 1 pipe, then in the muffler it splits into 2 pipes then comes back out as one. basically like an overtaking line on a road but with a wall down the center.

mines pretty quiet...

Neighbours dont have to much of an issue with it :D

JustJap/Steve,

Can I get an idea of how many dB the full turbo back xforce exhaust is? Have you guys done any tests on ones you've installed??

Anyone actually - wondering whether it'd still be "legal" - 90dB (i believe) in NSW..

might go get one done on the weekend. father in law works at an exhaust shop. will do a test with silencer in and out. i have split dump, 3" front pipe and cat, 3.5" x-force cat back and muffler is 3" x-force cannon. still has center muffler. i know it is supposed to be legal but i really doubt it. my father in law's falcon has a standard 2.5" sports system with both mufflers and it is quieter than mine and his is on the limit. but the only way to properly test is to do it the ADR way. it is as follows-

cones are placed at a predetermined distance, with a vehicle being accelerated through them at full throttle in a certain gear (usually 3rd). the peak db reading from the meter (a predetermined distance away) is recorded. runs in both directions are done, and a radar gun is used to ensure entry speed is around 55kmh.

a stock xr6 turbo is 87db, and a stock xr6t with just the center muffler removed, but stock piping size only just comes under at 89db.

Cheers guys..

If anyone has the details on it that would be great.. anyone had an sound tests done..

if I get it replaced i'll keep my stock one in case of getting defected

ive heard justin911's car, and i doubt its legal...

mine on the other hand would be :D

  • 3 weeks later...

Ok guys, I have come to a conclusion about the exhaust (after doing some really exhausting research! >_< ).

I have decided to stick with BATMBL r33 split dump/front pipe (s/steel) and the CATCO 3 inch large Cat - about $620. And for the Cat back I have decided to go with the APEX-I Bomber from BT-Revolution - about 750. (havent put the orders in yet though).

Total comes to about $1370 before fitting.

What do y'all think about this? Good combination?

i paid $400 for 3.5" cat back at mates rates. but that was still above cost by a bit. and that the price for the 3". ordered a 3" and got 3.5" at same price.

i have seen the x-force cat back systems on ebay for i think it was $599 for 3" and $699 for 3.5"........or it was $499 and $599....either way there was $100 difference.

im gettin my exhaust from exhaust technology in SA and they are freighting it up to me. (in western syd)

3" straight thru from turbo back with highflow cat (removable) with straight thru pipe to Apexi manual ECV to dual 3" tip.

turbo> 3" dump/front -> removable cat/race pipe->3" pipe ->Apexi ECV-> Dual 3" tip :D

think its $1400 to my door.. ill heatwrap it then install it myself in about 30 mins :D

straight%20pipes.jpg

stainless steal :ermm:

Edited by illusiVe

when x-force advertises that theyr exhausts are: "below 90db" or whatever the legal limit is... that is measured with the silencer on I'm pretty sure. It's over the limi without the silencer.

Still good value for money exhaust though! Thats what I'm getting.

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