APS Tall Boy
Seems like most folks decided the motordyne spacers were giving equivelent power returns for less money, but that's just what I've read, don't know anyone personally using the APS.
Google APS tall boy and you'll find threads around here, my350z and some other sites with reviews/discussions about it.
Google APS tall boy and you'll find threads around here, my350z and some other sites with reviews/discussions about it.
I have an APS tallboy plenum I picked up off a guy on my350z a little over a month ago. I had a MD 5/16th spacer before. I switched up mainly for looks in the engine bay (and the slight performance gains on an NA ride). I sold my polished OEM plenum and polished MD spacer so I broke even. My initial impressions are that I picked up a bit of hp/torque, car feels to pull a bit more, but I don't have a dyno graph to back that up. Sounds better than my MD spacer did.
The gains of the APS will be slightly greater than a MD 1/2" spacer for an NA car and should be even more for a FI car.
Mine has been polished and the tabs have been shaved off.



I agree with Leksikon's comment. MD offers almost the same (or more gains per the plenum shootout done a few years back) as an APS (or other aftermarket plenum) for less than half the cost.

The gains of the APS will be slightly greater than a MD 1/2" spacer for an NA car and should be even more for a FI car.
Mine has been polished and the tabs have been shaved off.



I agree with Leksikon's comment. MD offers almost the same (or more gains per the plenum shootout done a few years back) as an APS (or other aftermarket plenum) for less than half the cost.
Last edited by CandlestickPark; Nov 30, 2010 at 02:06 AM.
Thanks man. I got it polished at a local shop here in SoCal (Decor Plating). Most of what can be polished or chromed in my engine bay has been. A list of my mods is here: https://g35driver.com/forums/garage/...stickPark.html
Here are a couple more APS plenums for you to check out:
RRYDE - he's been running it since it first was released

rookie - he's since changed to a Cosworth
Here are a couple more APS plenums for you to check out:
RRYDE - he's been running it since it first was released

rookie - he's since changed to a Cosworth
Last edited by CandlestickPark; Nov 30, 2010 at 09:41 AM.
Yeah if money wasn't a factor I'd have gotten a Cosworth for sure, its a sick plenum. Paid 1/4 of a polished Cosworth for my polished APS though.
Also I didn't want to loose any power, since I'm NA and you only get gains on the Cosworth if you are FI.
Also I didn't want to loose any power, since I'm NA and you only get gains on the Cosworth if you are FI.
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^No. The APS replaces the upper plenum and doesn't work with the MD spacer. The Cosworth plenum replaces the upper and lower plenums and is not compatible with the MD spacer.
A lot of people have a Cosworth (bigc, rookie, martyg35, Green Goblin, ttrank etc. etc.). You'll only see gains with it if you are boosted. Since its >$1K it doesn't make sense to run one if you are NA when you could get a spacer for way less money and greater performance, unless you only want it for the "ballin'" factor.
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A lot of people have a Cosworth (bigc, rookie, martyg35, Green Goblin, ttrank etc. etc.). You'll only see gains with it if you are boosted. Since its >$1K it doesn't make sense to run one if you are NA when you could get a spacer for way less money and greater performance, unless you only want it for the "ballin'" factor.




