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2011 Black Wagon
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Discussion Starter · #1 ·
I’ve done a search here and on google but can’t seem to find anyone who has shared their experiences with the DSX billet lid for the Gen 2’s. I’ve seen a few posts for the Gen 3’s which resulted in higher sound from the supercharger and maybe 30 or so more butt dyno power with no tune and no change to IAT. Obviously no imperial date yet to support this and not really after that since it is not relevant to the Gen 2.

This started when I saw FI Interchillers water meth spacer plate to add to my stock lid. This would put meth post boost which I have seen has multiple benefits. Is the ProMeth kit installed in the ZL1 lid considered post boost? If I opt for the DSX lid and run ProMeth kit like the ZL1, would I have to run straight meth as has been suggested by some because of multiple issues running though the vanes of the compressor screws (compression of water-hydro lock and potential corrosion) or stick with the 50/50 mixture?

What I would really like to know are 1. material thickness for mounting ProMeth Zl1 style kit and 2. longevity/durability. Does it develop warping over time, cracks at mounting bosses, etc…

Also what is the volume difference versus ZL1 lid vs added 20mm spacer on stock lid. Would this DSX lid benefit from an additional spacer like the Nitrous Outlet spacer running water meth in lieu of ProMeth.

I’m doing this to enhance the following supporting mods:
Fuidyne big ass HX
Pierburg CWA 100 pump
DMS under hood HX reservoir
ATI 8.6/Griptec 2.45

My order is in que with Mont Motorsport; just wanted to see if anyone had objective and subjective data to share before I shoot…

Thanks in advance.
 

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Discussion Starter · #6 ·
No idea, haven’t seen it, but Dave does amazing work, I wouldn’t hesitate on anything he does.


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We’ll I pulled the trigger and lid will be here this Thursday. Haven’t seen a tracking number from Prometh yet. Maybe they have to fabric the lines? Going to be changing to 2.45/8.6 pulley. I’ll update with results when installed.


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Discussion Starter · #7 ·
The DSX billet lid arrived today. After thorough inspection, this thing is very nicely made. Shout out to Mont Motorsport for the quick shipment.
The flanges seem adequate, and the machining and anodizing are quality. The inside is smooth as glass and it appears it has a shark fin to aid in even air distribution. Includes the water manifold for the stock brick. Just waiting on an update from ProMeth







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Looks nice!

I like the extra room to the rear cylinders too

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Discussion Starter · #9 ·
Looks nice!

I like the extra room to the rear cylinders too

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Yeah, I’m curious what the volume difference is. When I do the swap I want to fill each with water and see what the delta in cc’s are.


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Discussion Starter · #10 ·
Does anyone have any suggestions for a good controller? Prometh offers a mechanical 2 stage pressure switch solenoid. 1st stage at say 3 lbs and 2nd stage at 8-10. Might be more reliable than AEM digital control. I’ve read good things and bad things about the digital controllers and want the set up to be reliable and durable.


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Does anyone have any suggestions for a good controller? Prometh offers a mechanical 2 stage pressure switch solenoid. 1st stage at say 3 lbs and 2nd stage at 8-10. Might be more reliable than AEM digital control. I’ve read good things and bad things about the digital controllers and want the set up to be reliable and durable.


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I like snow performance controllers. Level 2 is what you are talking about, has stage 1 and stage 2, and really simple to use
Their stage 3 controller that I have on nitrous+meth car is pretty badass. Can do 2 stages via injector pulse width or boost reference, I believe TPS as well. More complicated to use, but can be adjusted real nice while tuning.

For check-valves go with devils own, I had lots of siphoning issues with other ones (post boost/tb meth)
 

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Discussion Starter · #13 ·
Aquamist?


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IMO a little too exotic. I like there design intent but not looking to build a race car. Just looking for something reliably and replaceable should it die on my. I’m leaning toward Prometh pressure switches and have a few on hand as spares…
AEM seems to be 50/50 with longevity


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Discussion Starter · #14 ·
Installed the DSX lid today along with DMS under hood reservoir and Pierburg CWA-100 pump. Initial thoughts after driving are good. Makes more noise (+) and seems to have lowered the boost (11 lbs on analog gauge, down from 12+ from before). Can’t be quite certain as I did not bring along the computer to log. I will datal log as soon as I can to get a better analysis of IAT temp and boost levels.

One strange thing to mention is the brick bolts are not drilled and tapped long enough for stock bolts; thank god a had a few new shorter stainless steel ones lying around. Also the forward MAP sensor just has a drilled boss with no port for the sensor to plug in to. Just out there in the open? Guess that’s ok? Car started up and runs great so not really an issue. Will dig into the tune soon and see what can be extracted. Next up is the ProMeth ZL1 kit which should be here any day now…

Hood Motor vehicle Automotive design Vehicle Automotive lighting


Hood Automotive tire Grille Automotive lighting Motor vehicle
 

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The baro sensor is supposed to be open to atmosphere- I had the same WTF moment when changing lids!


I am slightly jealous of the new lid - but not enough to spend more money on one...

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Discussion Starter · #16 ·
Thanks random! The reason I went with this vs ZL1 was A) availability and B) extra volume and C) thickness in the wall for meth nozzle. Not sure about C; too impatient to measure but will when the meth kit arrives. At first glance it doesn’t seem too thick but being that it is billet, should support some drilling and tapping?
 

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2011 CTSV Coupe M BLK LSX376-B15
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As per Random84, "I like the extra room to the rear cylinders too." I agree that this 'single' feature in design is likely the most beneficial improvement over the ZL1 lid.
 

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Discussion Starter · #18 ·
So far it’s working out. IAT 2’s are no more that 20 degrees above IAT 1 (according to aeroforce gauge). Sounds good too! Definitely more pronounced noise. Next I’ll be installing the ProMeth ZL1 kit.


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I'm liking the sheetmetal lid from @Dedicated-Matt if I were running a kong 2650 that is the lid to have.
They both look like interesting options. Other than price, what do you find about the DMS sheetmetal lid appealing over the DSX for performance?
 
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