Ozzie st150 exhaust

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Re: Ozzie st150 exhaust

Postby mohamedeb » Thu Apr 07, 2016 3:20 pm

do u have an email. Mayb i can send u exhaust notes of my st150 buddy. Judging from that sound an exhaust shop should be able to help u match my sound by voicenote atleast.

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Re: Ozzie st150 exhaust

Postby Skywalker » Thu Apr 07, 2016 4:14 pm

I ran a SWR manifold - round resonator - small oval silencer - jap style rear canister, all piping was 50mm. The sound was fantastic with pops on the over run etc.

Note I was at altitude and only had intake and pumaspeed flash, when I ran the system on my car. Power gains between 50-54mm are debatable but negligible imho.

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Re: Ozzie st150 exhaust

Postby rositano » Fri Apr 08, 2016 3:43 am

mohamedeb wrote:do u have an email. Mayb i can send u exhaust notes of my st150 buddy. Judging from that sound an exhaust shop should be able to help u match my sound by voicenote atleast.


Hi Mohamed,

An email would be great, thanks!

I'll pm you.

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Re: Ozzie st150 exhaust

Postby rositano » Fri Apr 08, 2016 4:07 am

Hi Skywalker,

Interesting setup! Do you happen to know what internal design your jap-style rear canister had...straight-through, chambered.....etc?

Thanks

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Re: Ozzie st150 exhaust

Postby Skywalker » Fri Apr 08, 2016 7:57 am

At that time I couldn't find a straight through 50mm canister, but managed to find a 63mm from one of local suppliers F1-X, which have a "pinch" reducer on the inside. Here at altitude big bore systems cause bad power losses for us, 1400cc-2000cc N/A engines usually run 50-54mm systems, unless they have cams or head work which require additional flow at high RPM. I didn't have cams, so my low end torque was more important to me.

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Re: Ozzie st150 exhaust

Postby rositano » Fri Apr 08, 2016 1:27 pm

Thanks Skywalker.

Since reading and posting on this forum I can really understand the difference between exhaust setups "at the reef" or "on the coast".
Here in Sydney there's no such talk because we're all on the coast. I'm convinced now that I need to make the pipe size after my 57mm sports cat also 57mm all the way to the back box.

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Re: Ozzie st150 exhaust

Postby mohamedeb » Tue Apr 19, 2016 2:54 pm

Hi rositano, i sent you an email. Please check up and tell me

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Re: Ozzie st150 exhaust

Postby Stu » Wed Apr 20, 2016 7:25 am

so is it sorted yet ?
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Re: Ozzie st150 exhaust

Postby rositano » Wed Apr 20, 2016 11:07 am

Hi guys.

Mohamed, I got your email. I pm'd you earlier. Like I said, your exhaust has a nice note! Thanks again

Stu, I've booked my car in at the exhaust shop tmw. I'll be going for a freer flowing back box with a nice stainless 3.5" tip.
I'll take it nice and slow, make minor adjustments before I go 57mm pipe all the way.

I'll be going for straight-through with middle resonating chamber (so not a true straight through). These 'lukey' mufflers are known for their deep, mellow note with a bit of rasp.

https://www.bestmufflers.com/bshop/prod ... cts_id=444

Btw, I've received my 60mm throttle body in the mail yesterday, keen as all hell to give it a go. Will have to be patient for 100-150km to run it in.
Also sanded and prepped all my plastics ready for some primer and 2k satin black at the panel beaters. Thought I'd pay $100 to get it done professionally. Should last longer than acrylic.

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Re: Ozzie st150 exhaust

Postby Stu » Wed Apr 20, 2016 11:35 am

very nice man you going to love the mini changes....
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Re: Ozzie st150 exhaust

Postby rositano » Wed Apr 20, 2016 11:49 am

Ha ha ha ha! "..mini changes" :lol:

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Re: Ozzie st150 exhaust

Postby Stu » Wed Apr 20, 2016 11:57 am

you got your cams yet ???? you going to love those
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Re: Ozzie st150 exhaust

Postby rositano » Wed Apr 20, 2016 1:14 pm

Just got back from the garage, I installed the 60mm throttle. Went for a drive.....no issues. No obvious difference...yet, I hope.

Cams you say!! I've been chatting to Steve from swr. He's a busy man! He's waiting on some stock to arrive. Was chatting to him about mapping, and he recommends the unichip, considering I have his 4-2-1 branch already. He can also program it to suit the larger throttle as well.

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Re: Ozzie st150 exhaust

Postby mohamedeb » Wed Apr 20, 2016 1:57 pm

HAHA oh the beautiful cams, man you are just going to start your cabbie up to hear the cams. Just don't the exact same sound my cabbie with cams make. Each car differs depending on mapping or if it is gen 1 or gen 2 cams.

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Re: Ozzie st150 exhaust

Postby rositano » Wed Apr 20, 2016 2:39 pm

Mohamed,

I'm hearing a lot of good things about these cams!! Will be the last piece of the puzzle for me.
The cams I intend to get are the swr, identical to cossie ones (gen 2).

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