[Boost Creep]

I don't know whatever happened with this, but I had read somewhere people putting bigger centrifugal blowers on cars and overdriving the blower to get boost to come in earlier and then controlling boost on the top end with a blowoff valve.

For street driving you get into the boost a little earlier making the car more lively, and at the top end that you will only use occasionally, the excess boost is bled off and kept in check.
Not something you would do with a drag car, but for only short bursts, dumping the boost at the top end/high rpm doesn't seem like it's that bad.

Like I said, I don't know whatever happened but it seemed like a decent idea as a centrifugal can be a little lazy driving around town before boost while still spinning a supercharger.

[Ericdared]

Originally Posted by adamjwilson

Keep in mind your base rwhp is ~385ish (450 at the crank).. normally we reference rwhp. Adding aftermarket exhaust (assume NPP) will have minimal gains if any to rwhp and torque. May want to provide a budget as well for the masses here to reach your HP goals above

Yeah I was talking rwhp. The exhaust I know isn't much, it is more for the sound. Mine is not a npp car so single tips. As far as budget goes I am looking at around the 20k range overall.

[Ericdared]

Originally Posted by arpad_m

I have just this car, 735 rwhp and a true Jekyll & Hyde personality, nice cruiser for daily driving and trips with the missus (25-27 highway mpg) and a gnarly animal (4-5 mpg ) when leaning into it with performance shift mode activated. Mine was built by Jannetty Racing, you can see the main components in my signature.

The Maggie 2300 would obviously be replaced by the 2650 in a new build, and yes, it's a PD, not a centrifugal.

I'm not opposed to a pd 2650 they are about the price range, what would the benefit of it be over a centrifical?

[arpad_m]

Originally Posted by Ericdared

I'm not opposed to a pd 2650 they are about the price range, what would the benefit of it be over a centrifical?

It's mostly a matter of taste. Centrifugal superchargers build boost/torque continuously whereas on PDs boost/torque kicks in very strong very early and increases much less throughout the rev range, up to the point where torque starts to fall off and boost peaks.

There are subtle differences in economy, heat management, sound etc., but I think the biggest difference is in the way these units generate power across the rev range.

[wnta1ss]

Originally Posted by cjperformance

My impression is that centri/Procharger (which is what i have) can be challenging to work with vs a PD. Seems like i need to go an extra mile to have the same gains as a PD. BUT ive never had a PD so i cant say for sure.

I think that you got the wrong impression. IMO the fact that you installed your kit with the manufacturer's canned tune was the main source of the, again IMO, underwhelming performance that you had received on your initial install. Same exact thing happened with a Magnuson 2300 that I saw when it was also using the manufacturer's canned tune. Performance was underwhelming IMO, and it was not the fault of the blower itself. Any of the supercharger kits for the SS, both centrifugal and PD-style, are capable of making decent power IF the tune allows it.

[cjperformance]

Originally Posted by wnta1ss

I think that you got the wrong impression. IMO the fact that you installed your kit with the manufacturer's canned tune was the main source of the, again IMO, underwhelming performance that you had received on your initial install. Same exact thing happened with a Magnuson 2300 that I saw when it was also using the manufacturer's canned tune. Performance was underwhelming IMO, and it was not the fault of the blower itself. Any of the supercharger kits for the SS, both centrifugal and PD-style, are capable of making decent power IF the tune allows it.

It feels MUCH faster after the port inj and pulley down. Very happy with things right now. Cant wait to make a pass at the track and see if my SOTP estimate matches reality. Im feeling like low 10s are possible.