Motordyne Plenum Spacer, Discussion, Dyno Info
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Joined: Jul 2002
Posts: 369
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From: Minneapolis
Originally Posted by copbait
All these haters slamming those of us that are reporting on the sound changes, let me ask you this, what else is there to really report on until we get some actual dyno runs?
Do you guys honestly put any value on someone's butt-dyno report? I can tell you that I don't even trust my own butt-dyno, much less someone else's. If you think you can detect a loss or gain of ~ 5 torque or HP then you are fooling yourself. That's like a 2% change
So until I see some more dynos, the only useful chatter in this thread to me are reports about sound changes and any other useful install tips.
Do you guys honestly put any value on someone's butt-dyno report? I can tell you that I don't even trust my own butt-dyno, much less someone else's. If you think you can detect a loss or gain of ~ 5 torque or HP then you are fooling yourself. That's like a 2% change
So until I see some more dynos, the only useful chatter in this thread to me are reports about sound changes and any other useful install tips.
Really, these people aren't haters. Of course we want to hear about power diffs that anyone has noticed (and the dyno or an equal drag race of some kind are the real proofs), but if the noise increase is offensive or whatever, we are open to hearing that as well. We're all anxious to discover something of substance...or even kinda close.
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Joined: Jul 2004
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From: O.C.
Originally Posted by BrianV
I had the same experience. That factor and the added noise (not a good noise in my opinion) resulted in me going back to the stock box. I've been a happy clam with a more muffled, deeper engine note, a quicker off the line punch, and an overall smoother engine.
However, I like the whistling noise that the Stillen makes.
Alright....let me really confuse you! 
I have had the opportunity to try both the 1/2" & 3/8"...back to back.
I was accidently sent the 1/2" when I had ordered the 3/8.
I emailed Tony and he apologized profusely....and immediately overnited me the 3/8....and said "Try them both...and send me back the one you don't want".(now that's customer service!!)
I can honestly say that my particular car is much happier with the 3/8"!
Granted, it is not scientific...just my butt dyno....could depend on your other mods.
But it runs smoother, pulls harder and seems quicker than stock or the 1/2" spacer.
JMO
I have had the opportunity to try both the 1/2" & 3/8"...back to back.
I was accidently sent the 1/2" when I had ordered the 3/8.
I emailed Tony and he apologized profusely....and immediately overnited me the 3/8....and said "Try them both...and send me back the one you don't want".(now that's customer service!!)
I can honestly say that my particular car is much happier with the 3/8"!
Granted, it is not scientific...just my butt dyno....could depend on your other mods.
But it runs smoother, pulls harder and seems quicker than stock or the 1/2" spacer.
JMO
Last edited by Brando; Feb 16, 2005 at 04:41 PM.
Originally Posted by OldVFRGuy
Alright....let me really confuse you!
I have had the opportunity to try both the 1/2" & 3/8"...back to back.
I was accidently sent the 1/2" when I had ordered the 3/8.
I emailed Tony and he apologized profusely....and immediately overnited me the 3/8....and said "Try them both...and send me back the one you don't want".(now that's customer service!!)
I can honestly say that my particular car is much happier with the 3/8"!
Granted, it is not scientific...just my butt dyno....could depend on your other mods.
But it runs smoother, pulls harder and seems quicker than stock or the 1/2" spacer.
JMO
I have had the opportunity to try both the 1/2" & 3/8"...back to back.
I was accidently sent the 1/2" when I had ordered the 3/8.
I emailed Tony and he apologized profusely....and immediately overnited me the 3/8....and said "Try them both...and send me back the one you don't want".(now that's customer service!!)
I can honestly say that my particular car is much happier with the 3/8"!
Granted, it is not scientific...just my butt dyno....could depend on your other mods.
But it runs smoother, pulls harder and seems quicker than stock or the 1/2" spacer.
JMO
Good info., I was trying to decide between the two sizes. - Thanks
question
Is the plenum spacer installed as a milled fit (just flat surfaces to flat surfaces) or are there gaskets involved ?
i.e. to do this, do you need to remove old gaskets, and install new ones.
Are these kits complete (include everything needed ?)
Are there any fit issues (raising the plenum and all by 3/8") does it start to interfere with the hood etc ??
Is the plenum spacer installed as a milled fit (just flat surfaces to flat surfaces) or are there gaskets involved ?
i.e. to do this, do you need to remove old gaskets, and install new ones.
Are these kits complete (include everything needed ?)
Are there any fit issues (raising the plenum and all by 3/8") does it start to interfere with the hood etc ??
Originally Posted by Sickone
question
Is the plenum spacer installed as a milled fit (just flat surfaces to flat surfaces) or are there gaskets involved ?
i.e. to do this, do you need to remove old gaskets, and install new ones.
Are these kits complete (include everything needed ?)
Are there any fit issues (raising the plenum and all by 3/8") does it start to interfere with the hood etc ??
Is the plenum spacer installed as a milled fit (just flat surfaces to flat surfaces) or are there gaskets involved ?
i.e. to do this, do you need to remove old gaskets, and install new ones.
Are these kits complete (include everything needed ?)
Are there any fit issues (raising the plenum and all by 3/8") does it start to interfere with the hood etc ??
Maybe you should start by reading page 1......but OK...
Kit is complete, gasket, bolts, washers. Comes in 3 sizes.
1/4' or 3/8" will still allow the stock engine cover to fit.
I actually think it would fit with the 1/2" also.
After having done it several times...I think I could complete in less than 15 min.
Thanks OldVFRGuy,
I tried sifting through, I did finally go to the link, and saw that a gasket was included, etc.
What I can't find is the link to Motordyne to order one ?
I tried sifting through, I did finally go to the link, and saw that a gasket was included, etc.
What I can't find is the link to Motordyne to order one ?
Originally Posted by Sickone
Thanks OldVFRGuy,
I tried sifting through, I did finally go to the link, and saw that a gasket was included, etc.
What I can't find is the link to Motordyne to order one ?
I tried sifting through, I did finally go to the link, and saw that a gasket was included, etc.
What I can't find is the link to Motordyne to order one ?
Look under Private Classifieds.....Group Buys....
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Joined: Feb 2005
Posts: 16
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Originally Posted by DaveB
It's very possible to loose low to midrange power if the air velocity is disrupted. Air velocity is much more important than high volume. The same kind of losses can occur when adding too large of exhaust piping. The air velocity goes down and causes turbulence therefore you get a lack of power until the air velocity starts to pick up in the upper rpms. This is one of the fears I have with the plenums and spacers because these mods do change velocity and if done incorrectly, you can hurt low to midrange power which is the worst place you want to loose power. The car will be lethargic around town and will need to be revved hard to get any real performance out of it.
I don't think it's the bolts or a vacuum leak because these motors will sputter, surge, and stall if there is a vacuum leak anywhere in the intake tract after the MAF.
I don't think it's the bolts or a vacuum leak because these motors will sputter, surge, and stall if there is a vacuum leak anywhere in the intake tract after the MAF.
Originally Posted by Dizz
I'm thinking about doing the same. Are you using a K&N drop in or or the OEM filter?
However, I like the whistling noise that the Stillen makes.
However, I like the whistling noise that the Stillen makes.
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Joined: Jul 2004
Posts: 1,463
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From: O.C.
Originally Posted by BrianV
K&N, but honestly I noticed no difference in sound or performance from the OEM paper filter and the K&N. If I had to do it over again I'd just skip the K&N part.
I remember my car being quicker off the line with stock filter but it seem my car trailed after 3k rpm.
wow I guess the small stuff varies between cars.
I just put a K&N drop in element last week.
I did it only because my factory paper was dirty (7k miles, but dirt and grit from storms).
I didn't expect a thing from the K&N, I just tend to get 'the best' or 'the better' when I buy something.
I was shocked that there was noticable difference.
I just put a K&N drop in element last week.
I did it only because my factory paper was dirty (7k miles, but dirt and grit from storms).
I didn't expect a thing from the K&N, I just tend to get 'the best' or 'the better' when I buy something.
I was shocked that there was noticable difference.
Registered User
Joined: Jul 2002
Posts: 369
Likes: 1
From: Minneapolis
Originally Posted by Sickone
wow I guess the small stuff varies between cars.
I just put a K&N drop in element last week.
I did it only because my factory paper was dirty (7k miles, but dirt and grit from storms).
I didn't expect a thing from the K&N, I just tend to get 'the best' or 'the better' when I buy something.
I was shocked that there was noticable difference.
I just put a K&N drop in element last week.
I did it only because my factory paper was dirty (7k miles, but dirt and grit from storms).
I didn't expect a thing from the K&N, I just tend to get 'the best' or 'the better' when I buy something.
I was shocked that there was noticable difference.
Originally Posted by shawns1234
All I am saying is that my car has definately lost power until around 4500 RPMs. After that, I do think it gains. It is louder, and yes that is nice, but I DONT like losing the low end.
If you have lost low / mid range power.....you must have a problem with your car.
Mine pulls hard!