As promised, vids are now up.

http://www.youtube.com/watch?v=aqNYRkeQJFw

http://www.youtube.com/watch?v=mxtiCpsfqNs

Enjoy!

 

Sounds quieter than mine...

Nice writeup and choice.

 

Sounds great for NA!!! I know it's difficult to have a dp + header sound good with a 4cyl, but you pulled it off. It takes time and money to get it right, but I believe it's well worth it to have something that's not embarassing or "ricey".

 

Thanks Joe and Retro

The guys I went to were the best. I certainly didn't want anything embarassing which was the case when I first went there and tried the magnaflow on the stock piping.. lol.. This was their reaction "ohhh jesus, mate - that sounds bloody awful doesn't it... *revs again*... aw jesus *aussie accent*" - lol

But so far its all sounding good. Even when the installation was finished, he told me to ring him after 500kms and tell him how the everything was going. Then he said in one months time, come visit me for a checkup. I was like - gold.

But yeah.. should be good good.

Retro, post up a vid of your turbo man lol. I've waited like since four.

 

mit, tht is awsome, sounded great all the way through it, but in the first vid at about 20seconds in when u let the pedal off it sorta sounds like a bov or a decompression of some kind which sounded awesome

yeah just gonna keep looking, do u know if the place u went to is just a stand alone store, or would thay have franchises around maybe here?

also, btw this has been one of the best threads i reckon, very helpful and good info ... it should how all of them should be

 

2.4L motors push a lot of exhaust gas. I come from the 240sx world where the KA24DE loves a 3" exhaust. Here is a dyno to prove it. That's a large gain in whp and no loss across the board. Maybe a KA24DE is a lot different from your mivec 2.4L motor but who knows, it could like 3" exhausts like our stock 240sx motors do.

If you want to read more from the original thread, check this out. http://forums2.freshalloy.com/showth...st+dyno+5zigen

 

Someones gotta try it.. lol.

 

well I am not so sure if a 3" exhaust is the right way to go for our cars maybe if you were looking at pushing out over 300ponies then I would be thinking yes it is worth while looking at...
But I still stand firm that our cars will get a better result with the 21/2" especially for a 5spd man but for an auto yes the smaller 21/4" is probably the best option again it all comes down to how well the exhaust is made - mandrel or press bent and how much of a straight thro (minimal bends) it has.... and how many mods you plan on having on the car... also if you have gone to the expense of getting headers the cat and pipe should all be the same size - the more consistant the flow the better the results will be as soon as you start downsizing the pipe you start adding a restriction of air flow which can cause a loss of power in most likely the top end

personally I would rather have a loss of power in the lower rpm range than the top rpms - simply because this loss will only be noticeable in first gear and it is in first gear that you have traction problems so this loss of low end torque can actually help with very minor traction gains... I know I am probably way off here but that is just the way I see it...

 

Thats a fair call.

I've noticed loss in power in low end, but mid-top is much better. Though I have a 44mm headers and downpipe with a 2 1/4 piping I think the power is good. I think a good tune should fix it up to give a more smooth powerband. I just think for our cars, 2.5" is alot for a street car. Drags maybe, but street I think its just too big unless there are some serious modifications.

I'm willing to wait for the E8 Haltech chip modified for our cars

Do you know when it will be out Christine?

 

By the way, is stock piping 2"?

 

2 1/8" ID.

 

The Haltech E8 is available now to buy - you know who to contact

 

I am reviving a very old thread. I have been relentlessly researching custom exhaust possibilities, and this one definitely caught my eye.

I haven't been sure if I should do a custom cat- or axleback exhaust, or even just a muffler welded onto my stock piping, and this one really made me wonder. Based on the more recent threads, I have seen people say there is no difference in stock piping to custom 2.25". But after reading this, I am now curious as to if it is better get custom piping done or not.

Would the fact that I have a M/T make difference in getting a 2.25 or 2.5"? I ask this because those in this thread kept saying since he has auto, 2.25" would be the best.

On that note, I think that I have pretty much decided that if I were to do a custom job, 2.25" would be my choice over 2.5" based mainly on this...
Now I still have more questions. If I were to get a muffler with a 2.25 inlet, could it be welded onto my stock piping even since it's 2.125"?

Would there be a, if any, noticable difference between the 2.125 and a 2.25 cat- and/or axleback?

Is a catback even necessary, or would an axleback be sufficient (not likely to go turbo ).

Are both RRM's exhaust 2.25 piping?

I do understand that I would "lose low-end, gain high-end" as the pipe gets larger, and larger likely would mean a little louder too.

I'm sorry if these questions are noob-ish, and if you want to throw insults, can you at least throw some information my way too?

Any and all opinions appreciated.






One more thing, I loved how they kept talking about how stock piping is 2" the whole time and it's not until this...
...is said at the very end. Hilarious.

 

Well since the thread was revived, I'll toss this log on the fire. Has anyone tried to do a Dual exhaust on a RA? if so, could you post a pic or video of the car and how it sounds, and whether or not you like it. I like the look of the new RA's dual, and other cars with similar sized engines that have factory duals, like the Mazda 6 2.3, the Mazda 3 2.5, and some older cars like the venerable rx7, which, correct me if im wrong, but even though it was a rotary engine, it still only displaces 1.3 litres, a massive chunk less than our own 2.4

 

Duals have been done but there is no need for the extra weight nor the wasted money....

Here's a few pics...