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Exhaust Help

WeaponV35
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WeaponV35 Contributor

WeaponV35

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Hi there people of the V community i just thought i might ask for some help... So i bought a HKS true dual exhaust kit for my 04 v35 coupe which is on my car at the moment this is only from the standard cat to back, Now i wanted to by some headers and i wanted to get something to replace the CAT... alot of people were telling me how good it is without it maybe a straight pipe from the headers? Also i am going to get a mapless tune done to the car after all of this is installed, If there is anyone out there who could give me a hand on what is good to get or how ever you's have done it to your V and got some great power out of it let me know it will be much apreciated and also i don't mind whatever price it is as long as it is reasonable thanks heaps peeps :).

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81gSKy Community Regular

81gSKy

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I wouldn't go with straight pipes unless you're willing to pay a hefty fine. It really depends if you're keeping the car NA or going FI... The best gains mods for NA are plenum spacers and high flow cats or straight pipe (Motordyne ART pipes).

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WeaponV35 Contributor

WeaponV35

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So your pretty much saying if i go straight pipes i could get caught due to what condition?..... Yeh i will be keeping the car NA so u rekon go with the plenum spacers and high flow cats or straight pipe with motordyne. How about the headers?

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81gSKy Community Regular

81gSKy

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So your pretty much saying if i go straight pipes i could get caught due to what condition?..... Yeh i will be keeping the car NA so u rekon go with the plenum spacers and high flow cats or straight pipe with motordyne. How about the headers?

EPA, the smell is detectable and if the cops look underneath your car... There are many people out there that have straight pipes or various forms of it on, but that's the risk they are willing to take.

Yup, I am ordering a plenum spacer and high flow cats as we speak. But with the headers, you won't get much gain from it. Although I would like to upgrade the header as well, I heard it a headache to install... :(

Edited by 81gSKy
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WeaponV35 Contributor

WeaponV35

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Ahh ok hmmm im thinking of doing the same i guess now that u mentioned the plenum spacer aswell i will be getting that, And the reason why i was going to get the headers aswell is cause i was going to do a mapless tune after everything is done but if the headers dont give any power to it then there's no point in getting it.

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81gSKy Community Regular

81gSKy

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Ahh ok hmmm im thinking of doing the same i guess now that u mentioned the plenum spacer aswell i will be getting that, And the reason why i was going to get the headers aswell is cause i was going to do a mapless tune after everything is done but if the headers dont give any power to it then there's no point in getting it.

There are gains with them, but they are small enough for people to think its not value for money. But if money (min $700 excluding shipping) isn't a issue, I'll say go for it and have a full exhaust system upgrade. :)

Edited by 81gSKy
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WeaponV35 Contributor

WeaponV35

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There are gains with them, but they are small enough for people to think its not value for money. But if money (min $700 excluding shipping) isn't a issue, I'll say go for it and have a full exhaust system upgrade. :)

Ahh well if it's not much gain then i'll just stick to getting a high flow cat and a motordyne plenum. What brand are you going for the cat? and im pretty sure your going to get a motordyne plenum aswell yeh

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81gSKy Community Regular

81gSKy

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Ahh well if it's not much gain then i'll just stick to getting a high flow cat and a motordyne plenum. What brand are you going for the cat? and im pretty sure your going to get a motordyne plenum aswell yeh

I initially was going to buy the Berk Techs, but I heard recently their not so good as I heard they make your exhaust sound a lot raspy and some tendency to be defective (i.e. crack or whatever). But I think that's just the nature of catalytic convertors, can be damaged easily. So that's why I chose to get the cheapest which was the Kinetix Racing and it's SMOG compliant. As long as the HFC does the job, that's all it matters.

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WeaponV35 Contributor

WeaponV35

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I initially was going to buy the Berk Techs, but I heard recently their not so good as I heard they make your exhaust sound a lot raspy and some tendency to be defective (i.e. crack or whatever). But I think that's just the nature of catalytic convertors, can be damaged easily. So that's why I chose to get the cheapest which was the Kinetix Racing and it's SMOG compliant. As long as the HFC does the job, that's all it matters.

Ah yeh fair enough then i guess i got time to think what i'll get. Just let me know when you put yours on and send me a video clip of it i would love to hear it and also i apreciate your help thanks champ.
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ka86 Collaborator

ka86

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I initially was going to buy the Berk Techs, but I heard recently their not so good as I heard they make your exhaust sound a lot raspy and some tendency to be defective (i.e. crack or whatever). But I think that's just the nature of catalytic convertors, can be damaged easily. So that's why I chose to get the cheapest which was the Kinetix Racing and it's SMOG compliant. As long as the HFC does the job, that's all it matters.

I ended up getting the Berk and love them. I noticed a power increase as well. It has a rasp however but that was expected from a HFC. I know Nighcrawler had to mod his Kinteix to fit. The standard cat/Fujitsubo combo sounded so much smooother though however the gains of the HFC are good compared to the stock cat.

http://www.skylinesa...ed/page__st__20

Andrew at AM Performance ended up having to cut the passenger side Kinetix hfc in 2 places to get it to fit perfectly. Cost me $120 as it required removing the hfc and refitting a couple of times as well as the cuts and mig welding. Was spewing i didn't fork out the extra $200 or so for the titanium hfcs of another brand in the end. I emailed the US seller to tell him that the Kinetic hfcs do not fit properly and I am pissed off about it, but he didn't even take the time out to reply. Bolt-on my ass.

The Berk is compliant as well. Minimum for Australia is I'm pretty sure 200CPI is as low as you can 'legally' go. Not knocking the Kinetix build quality but something to consider. :-)

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WeaponV35 Contributor

WeaponV35

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I ended up getting the Berk and love them. I noticed a power increase as well. It has a rasp however but that was expected from a HFC. I know Nighcrawler had to mod his Kinteix to fit. The standard cat/Fujitsubo combo sounded so much smooother though however the gains of the HFC are good compared to the stock cat.

http://www.skylinesa...ed/page__st__20

The Berk is compliant as well. Minimum for Australia is I'm pretty sure 200CPI is as low as you can 'legally' go. Not knocking the Kinetix build quality but something to consider. :-)

Yeh that is definately something to consider... i will have a look into that thanks alot :)

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