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Plenum spacer - 1/2'' or 5/16'' for an 03 coupe?

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Old 12-07-2005, 07:11 PM
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Plenum spacer - 1/2'' or 5/16'' for an 03 coupe?
Which did you guys end up goign with? I just ordered an MD 1/2'' one, hoping I don't regret it ^_^ (i don't care about the engine cover, just hope i don't lose hp anywhere)
 
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Old 12-07-2005, 08:08 PM
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i doubt u'll lose any power

the gains on these spacers are dyno proven
 
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Old 12-07-2005, 08:23 PM
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good choice with the 1/2............i hear that has the most gains
 
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Old 12-07-2005, 10:10 PM
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Originally Posted by tuan
i doubt u'll lose any power

the gains on these spacers are dyno proven
1/2 you will gain at 6000k and up but looses at other (can't use the engine cover)

5/16 you gain at 4000k and can use the engine cover.
 
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Old 12-07-2005, 11:52 PM
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Originally Posted by God|ZIlla168
1/2 you will gain at 6000k and up but looses at other (can't use the engine cover)

5/16 you gain at 4000k and can use the engine cover.
where are the "looses at other points" at?
 
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Old 12-08-2005, 12:00 AM
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1/2"md
I've got the 1/2"md on my 04 sedan with no engine cover problems. It was an excellent mod and I haven't done a dyno prior or post, but can say it feels quite nice! Good luck!
 
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Old 12-08-2005, 01:09 AM
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I have a 1/2" MD spaacer + Iso thermal kit FOR SALE . It is new in box. I havn't had time to install it and now that I'm not driving my car I have lost interest in it completely. $250 if anyone is interested.
 
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Old 12-09-2005, 12:31 PM
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The power difference between the two is very subtle right? Im deciding which one to chose I might choose 5/16...
 
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Old 12-09-2005, 01:05 PM
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Originally Posted by PieroG35
I have a 1/2" MD spaacer + Iso thermal kit FOR SALE . It is new in box. I havn't had time to install it and now that I'm not driving my car I have lost interest in it completely. $250 if anyone is interested.
If you wanna sell just the Iso Thermal kit(I already have a spacer from long time ago), I'm interested. PM me if you are interested in selling just Iso thermal kit.




You can't use engine cover with 1/2" spacer from what I know. Does anyone know why MD changed 3/8" spacer to 5/16"? I have 3/8" but I haven't installed it yet(shame on me because it's been sitting in my garage since March)
 
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Old 12-09-2005, 06:03 PM
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Originally Posted by 99atlantic
where are the "looses at other points" at?
They don't lose power anywhere in the curve. Different spacers gain power differently, but there is never a loss.
 
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Old 12-09-2005, 09:17 PM
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Originally Posted by Hydrazine
They don't lose power anywhere in the curve. Different spacers gain power differently, but there is never a loss.
Tony, do you have a few before/after Dyno graphs of the 5/16" and 1/2" spacers for 03/04 Coupe. I went to your website and it says "under contruction" when I click the Dyno tab.
 
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Old 12-09-2005, 10:02 PM
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I'll get that link working very shortly. And yes, it will have the 1/2" and 5/16" spacers.
 
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Old 12-09-2005, 10:38 PM
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Hydrazine, I was wondering why you guys replaced 3/8" spacer with 5/16" spacer?
 
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Old 12-09-2005, 10:43 PM
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To make room for the Iso Thermal.

The Iso Thermal gasket is 1/16" thick. Add that to the 5/16" and you get 3/8".

So the total heigth is the same but now the plenum runs cooler. It makes a good trade.
 
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Old 12-10-2005, 12:56 AM
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Thanks... Does the engine cover fit with Iso Thermal and 3/8" spacer?? Would they work fine together?
 
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