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Ct5 BW questions for mag 2650

Raineri5

New Member
Joined
Feb 26, 2025
Messages
1
Location
New York
V-Series Cadillac(s)?
2024 Ct5 blackwing
So I have a 24’ ct5v BW a10, just ordered the boost district stage 1 Magnuson 2650 upgrade which is essentially just the supercharger and hoses and what not , I have some high flow catted down pipes on my car now and a JLT intake , car is not tuned . My question is what size pulley would be a safe bet for a little more boost? I don’t plan on tuning the car just yet but since I have the down pipes I figured I would be ok with sizing down the upper pulley just a tad . Thoughts?
I’ve seen a lot of guys throw on the smaller pulley with stock ported blowers and no tunes with zero issues .
 

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