Depends on which spacer. the skunk is thick as hell and would only be noticable up top. A 5/16" spacer helps low end and some top.

 

It's cut out of one piece of aluminum? How exactly that cheap What are you expecting, cast iron? As for an aftermarket plenum, no thanks. Last thing I want is the dealer giving me hell about my aftermarket plenum or the sealing issues many aftermarket plenums have. Addtionally, for the money, the MD spacer is over 1/2 the cost for the same or better gains.

 

well i can say that skunk 2 does have the advantage its made out of plastic that is thermally non-conductive.

 

My real world results:

Mods: Z-tube
Track: Kansas City International Raceway
Density altitude: 200', light wind
1/4 mile: 14.32@97.6mph, 60' 2.15. Best MPH 98.1mph

Mods: Z-tube, MD 5/16"
Track: Kansas City International Raceway
Density altitude: 1,100', 10mph tail wind
1/4 mile: 14.37@99.7mph, 60' 2.18. Best MPH 99.9mph

So in worse conditions, the car was on average about 2mph faster, but .06 seconds slower. The conditions would account for about .1-.13 seconds and 1mph. The tailwind helped on the far end probably 1mph or slightly less. IMO, under sea level conditions like I ran in when basically stock, I think it's safe to assume 14.2s@99-100mph. IMO, it works as advertized. About 10whp/10wtq across the board.

 

But the plastic will not seal as well. As for the thermal properties, it won't do you much good, because the intake manifold will heat soak from radient heat just not contact heat from the block. Anyways, I've run my G at the track quite a few times with a cold motor and then did back to back runs with a hot motor. There's no real measurable difference. These cars are extremely consistent at the strip.

 

Dave you try the yaw delete mod with your new stickier 18s? I just bog with my re050s

 

I haven't tried it yet. My 18" PZeros grip far harder than 17" Avon M550s and they can create a bog. I've been experimenting and I've found the car seems to launch harder if I turn off the VDC and leave the car in D until it shifts to 2nd. I've just been way too busy to go to the strip this year. I'll probably have to wait until fall now because I'm not wasting my time in the warm weather.

 

I don't see where you are getting 10whp across the rpm range. Are you accounting density or altitude? was it not done at the same track? i see you lost 60' time as well as your 0-60 time, maybe gained a little on top because of the wind?

 

Couldn't have said it better myself...

MD spacer is the way to go.

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