CT5 V Blackwing Questions

[Ryana1992]

Good evening all,

I wanted to get some of you all's experience on a few questions that I have. My goal is about 700hp (want it to be streetable) on 92 octane, I also do not want to lose mid range power/driveability. I've heard the dual widebands stock allow the modifications without a tune. I understand I can probably gain additional power from a tune. Here are the modification I am looking at.

Kong ported blower with a 2.18" pulley
Nick Williams 103mm TB
Brisk RR12S spark plugs
Mighty Mouse catch can
JLT intake with 4" piping
Kooks catless long tube headers 1 7/8"

Here are a few questions:

1. Will these modifications without a tune achieve 700hp peak?

2. Will these modifications without a tune reduce hp/tq in the mid range?

3. For the catch can, from my understanding the routing is the PCV/sump under the supercharger is the dirty (inlet) and the clean (outlet) connects to the throttle body. In regards to the other CCV connection to the intake, is this location also needing a catch can or is the PCV side enough? I don't fully understand how the vacuum and everything with this system works so excuse my ignorance in advance.I just dont want to gunk up the intake valves.

Thank you in advance for any assistance and help! Excited to be a new owner!

 

[USMC1911]

Without a tune 700 is going to be very tuff. A manual and a smaller pully might get there on a generous dyno with lots of very favorable temps.

 

[Ryana1992]

Without a tune 700 is going to be very tuff. A manual and a smaller pully might get there on a generous dyno with lots of very favorable temps.

Thanks for the reply, and Semper Fi brother!

 

[hawk02]

I’d be very cautious about changing pulleys without a tune. Increasing boost raises cylinder pressures, and the timing typically needs to be adjusted to keep the engine safe.

With a 2.18 upper on 92 octane, the bigger concern isn’t hitting 700 hp — it’s whether the ECU will have to start pulling timing from knock before you ever get there.

You’ll also almost certainly get a check engine light running catless long tube headers without a tune. Removing the catalytic converters will trigger catalyst efficiency codes from the rear O2 sensors.

The factory widebands can compensate for moderate airflow changes like a cold air intake, larger throttle body, or even a ported blower to a certain extent. But they won’t optimize spark, torque management, or other parameters needed when you start increasing boost with a smaller pulley.

Without a tune, you won’t be anywhere close to 700 rwhp, and you won’t be getting the most out of the parts you’re considering installing.