I'm really liking the tone this system gives. I'm thinking about putting one on my 2003 nr 350z. I'm finding mixed reviews. Anyone have one? Also I'm planning on getting a 5/16 motordyne and possibly a new manifold. I have to do some research on the manifold. To figure what one is best for my car. I would like to add a set of art pipes as well. Any suggestions?

 

Keep reading, and throw out 75% of what you read. The hard part is filtering the crap.

 

Fixed.. You don't need both. They both do the same thing; equalize the airflow to all cylinders.

 

I also plan on putting a hks sc kit on it but that probably won't be till next year.

 

If you plan on goin forced induction soon, buy an exhaust that will match what you are looking for. You don't want a narrow exhaust f/i and you don't want zero back pressure n/a. Just search..

 

Ok. The japspeed is 2.25" w/4.5 outs. I'm thinking it should be 3"+.

 

But also keep in mind that superchargers like a bit of resistance, more-so than turbo applications...

Basic rule of thumb I learned while researching my SC build... Build it as you would to get the most out of a NA high HP build and then slap the SC on and you should be golden... A bit counter intuitive from a turbo build.

 

absolutely wrong nothing likes resistance this is the biggest internet myth in existence they like SCAVENGING just like a NA setup, scavenging on a turbo setup dosnt work because the pulses merge pre turbo and any pulse that comes out of the turbo is stopped from reaching the head by the turbine wheel. turbos will almost always have more backpressure pre turbo then a super charger the trick for them is least amount of back pressure to hit the boost you want and as big as possible after the turbo. the whole high NA build is the same for a turbo or SC whoever told you other wise is full of it the biggest mistake people make is throwing the biggest parts they can on the car and hoping it works without matching anything.

bottom line back pressure means there is exhaust pressure, which means not all of it is getting out of the combustion chamber and it is taking up room that could be taken up by charge air instead of spent exhaust. scavenging allows the pulses to time perfectly so every time one exits the exhaust it sends a vacuum pulse up to the head that helps pull charge air into the chambers

 

Well from experience w/ a SC and having test pipes -vs- cats I can tell you that my dynos were higher w/ the cats than they were with the test pipes and TQ was better also especially down low and she was more responsive...

For whatever reason that's the way it ironed out... One of the reason I am going with Motive HF cats on my build.

350z006 also had the same experience. https://my350z.com/forum/forced-induction/486984-vortech-tuned-with-motordyne-xyz-pipe-and-art-pipes-interesting-results.html

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Ok thx guys. I think I will just have to sit down with the guys at accelerated performance and go over exactly how to go about my build.

 

thats because the cats are in a larger chamber then the test pipes and providing a "false atmosphere" making the engine think the exhaust has exited the system and sending a small vacuum pulse. you will experience a much better result from test pipes in a properly designed exhaust system.......... which means custom none of the exhausts for the vq are designed properly they are designed to work with a bunch of different systems with nothing really in mind and dont match with any parts.

take two systems with identical scavaging propertys and have one with say 1-5 psi back pressure and the other with none and the one with none will always provide better results. the most cost effective method for a properly designed exhaust system will be custom long tube headers build for your exact setup that feed termination box's then the exhaust post termination box dosnt matter much.(termination box's are essentially what your cats are doing with there bigger chambers but actually designed specifically for that purpose.)

 

I just purchased my osiris tuner. I'm going to do some deep research and figure out what will be my best set up to go with.(keeping in mind that this is my daily driver in the summer months) I do plan on adding a hks sc kit. But prob for not a year or so. My plan is to get all my suspension, rims, tires and any parts I will want or need for the engine on before I put on the sc. Thx again for the input. At least I know its going to involve a lot more than simply buying a exhaust system to bolt on.

 

There's a lot to it. I tried to learn everything I needed to know to go forced induction but I simply don't have the funds to do it yet. So, n/a for me for a while. I'll figure the rest out when the time comes. Good lunch with your build

 

I will be n/a for a little bit. Not this winter coming but maybe next... or at least that's the plan anyway. I'm hoping to have my osiris tuner by next week. Its ordered. I also have my motordyne 5/16plenum ordered.

 

Lol dreamer thread. Report back in 2 years

 

Will do black... with pics or video if you wish.

 

Dream Thread

 

Im white

 

Good for you. So am I. I was refering to your screen name dumb ***. Have a nice day kid!

 

Wow that's interesting. Can you explain why? I come from a turbo backround where having TP would gain more power. Curious why its the other way around for a S/C setup.

Edit: N/M Jerryd explained it very well.