Pros & Cons for a Plenum Spacer, Test Pipes?
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What are the pros and cons for s plenum spacer, and test pipes? I have a 2003 350Z Touring package, with a K&N Typhoon intake, and Injen SES Exhaust.
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Nothing but pros in regards to getting a plenum spacer made by Motordyne Engineering. You may run in to problems with some of the others in regards to the strut bar not fitting etc.
As for the test pipes, it will definitely make your exhaust louder and if they are not resonated they tend to add rasp to your exhaust note as well. The gains are nice since it allows your car to breathe better than the OEM cats. If you want more flow without the rasp you can also look in to resonated test pipes or even High flow cats. The tolerance each individual owner has for the exhaust noise level will vary so it will be dependant on what your tastes are.
As for the test pipes, it will definitely make your exhaust louder and if they are not resonated they tend to add rasp to your exhaust note as well. The gains are nice since it allows your car to breathe better than the OEM cats. If you want more flow without the rasp you can also look in to resonated test pipes or even High flow cats. The tolerance each individual owner has for the exhaust noise level will vary so it will be dependant on what your tastes are.
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i read the FAQ and it said that "If you are a rev-up owner, you will most likely benefit the most from getting both a 5/16" spacer and the MREV2. If you are a 287hp owner, great gains have been shown from installing only the MREV2 with no spacer." So does this mean that if i'm a non rev-up owner, i should hold on the spacer and just get a MREV2?
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Originally Posted by sokudo9l6
i read the FAQ and it said that "If you are a rev-up owner, you will most likely benefit the most from getting both a 5/16" spacer and the MREV2. If you are a 287hp owner, great gains have been shown from installing only the MREV2 with no spacer." So does this mean that if i'm a non rev-up owner, i should hold on the spacer and just get a MREV2?
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Probably a noob question.. but just to be clear about a rev-up vs Non rev-up... an 03 would be Non rev-up because it already has an MREV built in? Sounds a little backwards in my mind, but that's what I gathered from the Top 100 FAQs in Wired's signature...
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The cons of a plenum spacer are the fact that you basically add another sealing surface to potentially leak, and they do not level out the front of the plenum enough to give equal air flow and air distribution.
The cons of test pipes are they are highly illegal and smell and are noisy..
The cons of test pipes are they are highly illegal and smell and are noisy..
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Originally Posted by MRC Motorsports
The cons of a plenum spacer are the fact that you basically add another sealing surface to potentially leak, and they do not level out the front of the plenum enough to give equal air flow and air distribution.
The cons of test pipes are they are highly illegal and smell and are noisy..
The cons of test pipes are they are highly illegal and smell and are noisy..
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Originally Posted by woodstock300s
What is the penalty for being caught with test pipes? Is it likely that a cop will notice if puller over?![Confused](https://my350z.com/forum/images/smilies/confused.gif)
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Since our cars are so low to the ground, it's pretty unlikely that they'd notice. (Unless they have some kind of mirror on a stick?)
Plus, the car runs at stoichiometric air/fuel ratio when at idle (and warmed up) so it shouldn't smell too bad like unburned fuel if the car is warm.
Most likely it's a fix-it ticket, where they tell you you need to get your cats put back on then go to a state exhaust referee and have them certify your car is okay and has cats. Then you pay a fine or something.
I'm not too sure though.
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