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Discussion Starter #1
We had a CTS-V coupe recently come into the shop with some existing mods and needing a few repairs and re-tuning. After the repairs were done and we got it on the dyno the temps were through the roof with his existing HX setup so we took a closer look!

Here's what we found:

Data from a partial pull with the existing HX




Thermal shot of the HX fill neck (engine off, key on, after pull)



Unknown brand HX




Comparison of "brand X" and D3 Performance Engineering HX



D3 Performance Engineering HX system (front mount HX and reservoir)



Finished install






And the final results! (I think they speak for themselves)






We have both of these items and MORE in stock and ready to ship for your CTS-V!

Beat the summer heat with a D3 Performance Engineering HX System!



 

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Pretty big difference there! That "brand x" HE is just to thick to properly dissipate heat without some serious fans on the back.
 

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Discussion Starter #3
Pretty big difference there! That "brand x" HE is just to thick to properly dissipate heat without some serious fans on the back.
Yep. Very restrictive for air flow.
 

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What were you doing on the before pull for the IAT2's to be 169 before you even start the pull? That is crazy!
 

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Discussion Starter #5
What were you doing on the before pull for the IAT2's to be 169 before you even start the pull? That is crazy!
All runs were performed on the dyno in heat soaked conditions. Basically loaded up and ran through the gears, made some partial pulls before logging. That was the case with both heat exchangers
 

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Discussion Starter #7

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What pump are you using with that tank, and how much does the tank/pump weigh empty?
 

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Is there any issue with bleeding the system being that the HE tank is lower than the HE in the supercharger lid?
Does all the fluid in the lid just drain back into the tank when the HE pump is off? Are you filling add bleeding from the factory "T" or from the front tank?
Thanks,
 

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What pump are you using with that tank, and how much does the tank/pump weigh empty?
This is with stock pump. Our reservoir might be 3-4lbs empty maybe
 

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This is with stock pump. Our reservoir might be 3-4lbs empty maybe
Thanks, but again, what is your "stock" pump?
 

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Discussion Starter #12
Is there any issue with bleeding the system being that the HE tank is lower than the HE in the supercharger lid?
Does all the fluid in the lid just drain back into the tank when the HE pump is off? Are you filling add bleeding from the factory "T" or from the front tank?
Thanks,
From the install instructions:

"Fill system with fluid, filling from the new fill point, using the OEM fill point simply as an air bleed."
 

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Discussion Starter #13
Thanks, but again, what is your "stock" pump?
You mean the water pump? The one that comes from the factory, OEM.

We are still working on an upgraded pump option but don't have anything in production as of now
 

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You mean the water pump? The one that comes from the factory, OEM.

We are still working on an upgraded pump option but don't have anything in production as of now
Got it, thanks.
 
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