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The vtc is a system that plays with the timing by advancing it for performance, mpg, drivability and a combination of all three. On the DE engines, not sure what years or if all of the DE variant motors...minus the vq35hr motor found in 07-08, you can tune and play with the exhaust timing not just the intake side. For example nismo vtc pullys can do this if you are running cams. They can be found at Z1Auto and Z1motorsports but are quite pricey. Essentially with the ability to play with the exhaust side of timing (adjust when and for how much exhaust is expelled from engine) you can play with your torque thought the rev range roughly.
Motordyne did this in their R and D to get the most out of their ART Test Pipes and showed better gains throughout the rev range and lowered the extra torque to a usable street friendly rpm, well best they could anyway.
Seeing as you have HFC already your best bang for the buck would be a cat back system that either includes the y pipe in the package or uses a true dual set up. Seeing as how you want a system that is quiet that limits you away from the cheap systems found on ebay or copy systems. Also it puts you in the high dollar range. If you get a y pipe back exhaust system meaning you are keeping your stock ypipe you are actually waisting money as the de ypipe is 2.0 to2.25 and can rob your new exhaust system of 20-30% power that you were to have gained...maybe even more. The y pipe is very important hence why I suggested the xyz pipe from motordyne with resonator....total is around 450 shipped or so.
Or look for power else places for example lightweight pullys which can add 2-3 at the wheels and to the air box mod which involves drilling holes at the bottom of the air box to get mor air in. And then get a proper tune rather than a tune every z starts off with from UpRev (get tune specific to your car). Spl parts did a simple bolt on Z and ran a 12.9 here in s.a. With stuff you are running now...minus a full exhaust and proper tune.
You can get the turbo xs exhaust in the classified section, I used to run it and it provided great torque from 2400ish to 5500ish rpm here are some vids
Motordyne did this in their R and D to get the most out of their ART Test Pipes and showed better gains throughout the rev range and lowered the extra torque to a usable street friendly rpm, well best they could anyway.
Seeing as you have HFC already your best bang for the buck would be a cat back system that either includes the y pipe in the package or uses a true dual set up. Seeing as how you want a system that is quiet that limits you away from the cheap systems found on ebay or copy systems. Also it puts you in the high dollar range. If you get a y pipe back exhaust system meaning you are keeping your stock ypipe you are actually waisting money as the de ypipe is 2.0 to2.25 and can rob your new exhaust system of 20-30% power that you were to have gained...maybe even more. The y pipe is very important hence why I suggested the xyz pipe from motordyne with resonator....total is around 450 shipped or so.
Or look for power else places for example lightweight pullys which can add 2-3 at the wheels and to the air box mod which involves drilling holes at the bottom of the air box to get mor air in. And then get a proper tune rather than a tune every z starts off with from UpRev (get tune specific to your car). Spl parts did a simple bolt on Z and ran a 12.9 here in s.a. With stuff you are running now...minus a full exhaust and proper tune.
You can get the turbo xs exhaust in the classified section, I used to run it and it provided great torque from 2400ish to 5500ish rpm here are some vids
Thanks again man!!
go motordyne all the way.... i have the art and the tdx2 and love it
my suggestion is dont skimp on things, if you get something you can just live with now, then you will more than likely swap it out later for what you really wanted. the motordyne is crazy sexy loud, i thought it would annoy me but i barely notice it now.
the invidia gemini is a true dual that sounds good and is just a little bit louder than stock
my suggestion is dont skimp on things, if you get something you can just live with now, then you will more than likely swap it out later for what you really wanted. the motordyne is crazy sexy loud, i thought it would annoy me but i barely notice it now.
the invidia gemini is a true dual that sounds good and is just a little bit louder than stock
Last edited by travlee; Nov 5, 2013 at 03:50 AM.
Avoid light weight pulleys, over extended period of time. They will do more harm than good. Is 3-4whp worth the extra engine wear from not having a damper installed on your crankshaft?
Motordyne is good, but pricey, and other companies have equally proven track records of performance at a much lesser price point. True dual or single, is somewhat preference based. Singles will be louder for sure, no guarantee they will outperform any decent true dual exhaust though.
Art pipes are highly over rated, and have shown losses on back to back dynos compared to straight test pipes... So for all that rocket science resonant tuning it's really hard to prove one way or another that it's going to perform optimally on every setup. I get it conceptually, but just don't buy into all the hype on these forums. You're better off being a cheapass buying used quality parts than new flavor of the month products.
Just food for thought before you go spend over $1,000 on some exhaust that's not even titanium... Tomei expreme single is another good inexpensive option btw. Or buy a used true dual cat back for $500-600...
Motordyne is good, but pricey, and other companies have equally proven track records of performance at a much lesser price point. True dual or single, is somewhat preference based. Singles will be louder for sure, no guarantee they will outperform any decent true dual exhaust though.
Art pipes are highly over rated, and have shown losses on back to back dynos compared to straight test pipes... So for all that rocket science resonant tuning it's really hard to prove one way or another that it's going to perform optimally on every setup. I get it conceptually, but just don't buy into all the hype on these forums. You're better off being a cheapass buying used quality parts than new flavor of the month products.
Just food for thought before you go spend over $1,000 on some exhaust that's not even titanium... Tomei expreme single is another good inexpensive option btw. Or buy a used true dual cat back for $500-600...
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