Motordyne Exhaust Review
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Hi all. Two weeks ago I decided to order the Motordyne TDX exhaust from JM AutoSport. I think by this point its well known that Motordyne has a reputation for a solid product. I figured I'd share my experience from purchase to install.
I decided to go with JM Autosport because they are located about 15 minutes from where I work and why not support someone local? Theyre a sponsor on the forum plus on their website they offer discounts on many products they sell. Done deal.
Upon placing my order i read that the exhaust comes standard with the rolled Ti tips. Before confirming my purchase, in the comments section I wanted to know if it was possible to swap out the tips with the SS straight cut ones. I placed the order assuming a rep would email or call me regarding it.
It took one business day to process my order and the next day my order was shipped, which was nice.
About a week later my exhaust arrives. I got to say, Motordyne knows something about good packaging
Everything was sealed up nicely and well protected.
A day before install I soaked all the nuts with liquid wrench and im a firm believer it helped make the job that much easier (75K on the odometer and just a little rust on the factory exhaust
) Glad i had access to air tools which made life a helluva lot easier.
Its nice that Motordyne includes the gaskets for the cat to XYZ pipe and new hardware aswell, though i just hit the studs on the cats with some fine sandpaper and used the new 15 mm nuts. Didn't feel like knocking out those studs to replace with the bolts. Every nut came off easily with the exception for one on the mid pipe, which stripped so fast you'd think I was throwing singles at it. Time to bust out the hacksaw
The TDX bolted up within 45 mins and was clean cut install. They include instructions but its pretty self explanatory. After starting the car and taking it out, I noticed a rattling noise at low rpm. My guess is that the mid pipe is just touching the metal mid brace causing it to vibrate. Tomorrow morning Im going to readjust and hope to resolve that issue.
If I had to rate this exhaust, fit/finish, sound and price, Id say fit/finish is perfect. Tomorrow while im adjusting the exhaust im also going to do the bumper tuck to show off those shiny new canisters
I love the V-clamps and every other exhaust company needs to start taking notes. Sound is right f'n on. No drone cruising in 6th, but drop a gear on the on-ramp and remember why you bought this exhaust. You get what you pay for holds true with this system. Glad i didn't skimp on a lesser quality product.
At the end of the day, Motordyne developed a fantastic product and if those LTH ever come to fruition, ill be a guarenteed buyer. Thanks for reading!
I decided to go with JM Autosport because they are located about 15 minutes from where I work and why not support someone local? Theyre a sponsor on the forum plus on their website they offer discounts on many products they sell. Done deal.
Upon placing my order i read that the exhaust comes standard with the rolled Ti tips. Before confirming my purchase, in the comments section I wanted to know if it was possible to swap out the tips with the SS straight cut ones. I placed the order assuming a rep would email or call me regarding it.
It took one business day to process my order and the next day my order was shipped, which was nice.
About a week later my exhaust arrives. I got to say, Motordyne knows something about good packaging
![thumbup](https://my350z.com/forum/images/smilies/biggthumpup.gif)
A day before install I soaked all the nuts with liquid wrench and im a firm believer it helped make the job that much easier (75K on the odometer and just a little rust on the factory exhaust
![Wink](https://my350z.com/forum/images/smilies/wink.gif)
Its nice that Motordyne includes the gaskets for the cat to XYZ pipe and new hardware aswell, though i just hit the studs on the cats with some fine sandpaper and used the new 15 mm nuts. Didn't feel like knocking out those studs to replace with the bolts. Every nut came off easily with the exception for one on the mid pipe, which stripped so fast you'd think I was throwing singles at it. Time to bust out the hacksaw
![Smilie](https://my350z.com/forum/images/smilies/smile.gif)
The TDX bolted up within 45 mins and was clean cut install. They include instructions but its pretty self explanatory. After starting the car and taking it out, I noticed a rattling noise at low rpm. My guess is that the mid pipe is just touching the metal mid brace causing it to vibrate. Tomorrow morning Im going to readjust and hope to resolve that issue.
If I had to rate this exhaust, fit/finish, sound and price, Id say fit/finish is perfect. Tomorrow while im adjusting the exhaust im also going to do the bumper tuck to show off those shiny new canisters
![](https://my350z.com/forum/images/smilies/icon39.gif)
At the end of the day, Motordyne developed a fantastic product and if those LTH ever come to fruition, ill be a guarenteed buyer. Thanks for reading!
Last edited by AdvanZ33; 08-06-2015 at 11:15 AM.
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Rattling noise appears to be fixed. Loosened the nuts to the cats and shifted the exhaust up a drop. Also rotated the mid pipe the opposite way to give a little more clearance between that metal plate and the pipes. I'm content at the moment.
Last edited by AdvanZ33; 08-06-2015 at 11:16 AM.
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As for the exhaust fitment, I'm still getting a vibrating noise (especially noticeable on deceleration). I read that the G community experiences similar issues. Anyone have any pointers how to sit it right or just keep adjusting it? I thought about that GT Spec mid brace might give a little more room?
Please chime in. Thanks
Please chime in. Thanks
Last edited by AdvanZ33; 08-06-2015 at 11:17 AM.
#5
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As for the exhaust fitment, I'm still getting a vibrating noise (especially noticeable on deceleration). I read that the G community experiences similar issues. Anyone have any pointers how to sit it right or just keep adjusting it? I thought about that GT Spec mid brace might give a little more room?
Please chime in. Thanks
Please chime in. Thanks
Last edited by AdvanZ33; 08-06-2015 at 11:18 AM.
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+1 and (carefully) adjust after the exhaust has warmed up. The first couple of heat cycles can cause some expansion with enough gap to cause some rattles or leaks.
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Any issue or concern with it melting?
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It is probably hitting the rear sway bar on the passenger side. You can try loosening it up and use a jack (with some cloth over top to prevent marring the finish) to prop up the exhaust until it is wedged up as high as possible. Then tighten up all the clamps. That might make you rattle free.
Alternative is the MD rear sway bar which will give you an extra 1/4 inch.
NOTE: Within 30 days almost all CC companies will reverse the charge without issue. You are all set.
Alternative is the MD rear sway bar which will give you an extra 1/4 inch.
NOTE: Within 30 days almost all CC companies will reverse the charge without issue. You are all set.
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It is probably hitting the rear sway bar on the passenger side. You can try loosening it up and use a jack (with some cloth over top to prevent marring the finish) to prop up the exhaust until it is wedged up as high as possible. Then tighten up all the clamps. That might make you rattle free.
Alternative is the MD rear sway bar which will give you an extra 1/4 inch.
NOTE: Within 30 days almost all CC companies will reverse the charge without issue. You are all set.
Alternative is the MD rear sway bar which will give you an extra 1/4 inch.
NOTE: Within 30 days almost all CC companies will reverse the charge without issue. You are all set.
![thumbup](https://my350z.com/forum/images/smilies/biggthumpup.gif)
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What is motordynes direct website? I've seen 2 different sites and don't know which one is the official one.
On a side note, does anyone know the filter size on the Injen long tube intakes? I have the red filters that need to be oiled and want to replace them with the dry filters. Less of a hassle.
Thanks!
On a side note, does anyone know the filter size on the Injen long tube intakes? I have the red filters that need to be oiled and want to replace them with the dry filters. Less of a hassle.
Thanks!
Last edited by AdvanZ33; 08-06-2015 at 11:19 AM.
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Anyhow time for the fun stuff. Looks like this is the problem. Pipe going over rear sway bar as suggested
![](https://cimg1.ibsrv.net/gimg/my350z.com-vbulletin/2000x1504/image_c885e71c46d9e778c2e4e70e54133be9d77d48fe.jpg)
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Loosened up all the clamps and used the floor jack to bump the exhaust up about 1/2 inch. Went for a test drive and everything seemed nice and solid. Also got rid of an exhaust leak I was getting coming from the Y to the muffler.
Any updates on those long tube headers from MD?
Any updates on those long tube headers from MD?