[FATTEMUNK]

Originally Posted by Turbo_RORO

I "THINK" you need to look at what you are really asking vs reality. Building a drag car is easy it has one job, so it can be great at that job. Building a 1/2+ mile car is easy it has one job. Building a street car that can do many things WELL is easy. How often will the car spend doing "highway pull"? Look at the positives and negative of both systems. I think IATs are the usual issue when doing long pulls with any setup. Going forged bottom end? Really you are going to get peoples personal opinions but in all reality you have to look at the power created in the range you will be racing. F1A or vs TVS 2600 vs 2.9 Whipple really at the same power level the race will be close. Probably come down to transmission type, and vehicle weight.

I guess what I'm really asking is that, in a roll race, is the higher and earlier torque of a PD blower less useful and will a centri always outflow a PD on the top end? How does one build around a centri to provide the instant torque feeling as some have said is possible? Because on many videos its really hard to figure out which is better. Alot of times the PD is ahead then the centri reels him in and the reverse aswell. I understand compared to other motors and with a 416 I will have alot of low end. Will the pros of a centri top end out weigh the pros of a PD in a daily? Will be highway rolls even more than 1/2 mile. Alot of exotic owners at my college that need a whoopin lmao. Also on the IAT subject I will be a doing a meth system with the blower regardless of which one.

[Turbo_RORO]

Originally Posted by FATTEMUNK

I guess what I'm really asking is that, in a roll race, is the higher and earlier torque of a PD blower less useful and will a centri always outflow a PD on the top end? How does one build around a centri to provide the instant torque feeling as some have said is possible? Because on many videos its really hard to figure out which is better. Alot of times the PD is ahead then the centri reels him in and the reverse aswell. I understand compared to other motors and with a 416 I will have alot of low end. Will the pros of a centri top end out weigh the pros of a PD in a daily? Will be highway rolls even more than 1/2 mile. Alot of exotic owners at my college that need a whoopin lmao. Also on the IAT subject I will be a doing a meth system with the blower regardless of which one.

I was trying to be subtle. The "instant torque" is what you say when you haven't been in a high boost procharged car. This was taken from a "mexico trip" need more instant? I don't even think of less than 60 as even with the M/Ts on it will spin hard. Also this was no nitrous on this run. When you make 18-20 psi it is hard to compare to a car that only makes 10psi but does it very early. My car makes 5-6 psi at 3400 RPM, My converter stalls to 3600. It is hard to be more instant. Please PD blower guys post a similar screen shot with what boost you make doing a 40, 60, or whatever roll.

EDIT BELOW:
To answer your question there are many variables, transmission, driver reaction time, camera angle etc. Both PD or Centri will be great daily drivers. My major point is that in reality they react more similar than what is often spoken of.

[Joe's_cool_1le]

I didn't see your screenshot but I can try and do a Mexico run tomorrow. It would be off my PDR though and wouldn't show my boost gauge unless I figure out a way to record it from my drivers seat. Either way it would show you how a 10+ PSI PD moves. It would be a M6 1LE. Only issue I'm facing right now is cool temps. Mashing it in 3rd can break loose in 50 degree weather. Gets a little chilly in Mexico this time of year.

[Turbo_RORO]

Originally Posted by Joe's_cool_1le

I didn't see your screenshot but I can try and do a Mexico run tomorrow. It would be off my PDR though and wouldn't show my boost gauge unless I figure out a way to record it from my drivers seat. Either way it would show you how a 10+ PSI PD moves. It would be a M6 1LE. Only issue I'm facing right now is cool temps. Mashing it in 3rd can break loose in 50 degree weather. Gets a little chilly in Mexico this time of year.

Reposted the screen shot. This is a 4th gear roll vs 3rd as I wasn't wearing my M/Ts. My only point is this when comparing a car that makes 10psi max @ 4000rpm is hard to compare to a car that makes 8 @ 4000 but 18@6500 rpm. While we understand that torque is not based on boost but is somewhat indicative or power potential. I agree that while torque production is usually higher on PD cars the difference is not that great. Especially in the use that the OP is asking about.

[Joe's_cool_1le]

Understood. Mines pretty flat once you get on it from a boost and TQ perspective. I hit high TQ around 3500 range I believe and is full boost then TQ slowly drops off and HP starts lower and just continues to climb to the 6000 +. My current setup is probably close to 600-650 TQ and HP. My boost gauge reads the same when at WOT.
'

Originally Posted by Turbo_RORO

Reposted the screen shot. This is a 4th gear roll vs 3rd as I wasn't wearing my M/Ts. My only point is this when comparing a car that makes 10psi max @ 4000rpm is hard to compare to a car that makes 8 @ 4000 but 18@6500 rpm. While we understand that torque is not based on boost but is somewhat indicative or power potential. I agree that while torque production is usually higher on PD cars the difference is not that great. Especially in the use that the OP is asking about.

[Joe's_cool_1le]

I do wish I could experience both blowers though. From my experience getting all that power right away and the centri just continuing to build as the rpms climb. Would definitely be a different experience.

[KingLT1]

Originally Posted by Perdieu

What is your idea of fast ?

ALL the fastest gen6 cars run Procharger's

Anything that traps 140 or higher. I might do a Procharger down the road...I had a P1SC on a 4th gen 15years ago...But I still am impressed with the Maggie's fit, finish, and performance.

[Turbo_RORO]

Originally Posted by Joe's_cool_1le

I do wish I could experience both blowers though. From my experience getting all that power right away and the centri just continuing to build as the rpms climb. Would definitely be a different experience.

I think they feel like almost exact inverse. My friend has a CTS-V makes 650-700 hits hard off the line then begins to die off. My Camaro hits hard (on spray hits even harder) and gets scary as the rpms climb. The transmissions in our cars make the difference negligible.

[toohighpsi]

Originally Posted by Cdflyer

Except the Fireball guys running an F1 and going 8’s....

Along with a good amount of nitrous...

[PackersFan26]

This may be a stupid question but can someone please tell me what a Mexico run is?

[toohighpsi]

A PD SC pretty much makes the same boost everywhere so it's just like driving a larger engine. Below is a 1/4 mile datalog from the Camaro with a TVS 2300 on a completely stock LT1 running a 10.2 @ 138MPH. You can see that it makes full boost (even during shifts) from launch to the end of the 1/4 mile (magenta line). You can also see the short shift from first to second (a bit of wheel spin) that cost me about .3, on the next pass that I fixed this and ran a 9.93@140.

It drives like a stocker around town and then pulls hard everywhere at WOT!

In the past, the PD systems that were available didn't have the inlet design and intercooler capacity to maintain power at high engine speeds.
While that problem still exists in some of the OEM systems, the latest aftermarket systems don't drop in power anywhere, they just scream from idle to redline.

[FATTEMUNK]

Originally Posted by Turbo_RORO

I was trying to be subtle. The "instant torque" is what you say when you haven't been in a high boost procharged car. This was taken from a "mexico trip" need more instant? I don't even think of less than 60 as even with the M/Ts on it will spin hard. Also this was no nitrous on this run. When you make 18-20 psi it is hard to compare to a car that only makes 10psi but does it very early. My car makes 5-6 psi at 3400 RPM, My converter stalls to 3600. It is hard to be more instant. Please PD blower guys post a similar screen shot with what boost you make doing a 40, 60, or whatever roll.

EDIT BELOW:
To answer your question there are many variables, transmission, driver reaction time, camera angle etc. Both PD or Centri will be great daily drivers. My major point is that in reality they react more similar than what is often spoken of.

Hey man, just a noob in the FI world. Previously all I had to do was plug in a tuner and tada 200 more hp. I think I'm getting it though. Problem is that my car is a M6 so no 3600 stall to help me out. Just want instant power as soon as I downshift and no slowdown when I shift. Right now the Whipple is at the top of my list due to the glorious blower whine and ZL1Tommy reaching 900+whp with it without a 416ci. Also rode in my family friends hellcat and yes the twin screw is intoxicating. All I'm trying to do is figure out will a centri beat a twinscrew in a similarly modified car with perfect shifts and conditions? Also is a the 2650>2.9?

[Cdflyer]

Originally Posted by FATTEMUNK

Hey man, just a noob in the FI world. Previously all I had to do was plug in a tuner and tada 200 more hp. I think I'm getting it though. Problem is that my car is a M6 so no 3600 stall to help me out. Just want instant power as soon as I downshift and no slowdown when I shift. Right now the Whipple is at the top of my list due to the glorious blower whine and ZL1Tommy reaching 900+whp with it without a 416ci. Also rode in my family friends hellcat and yes the twin screw is intoxicating. All I'm trying to do is figure out will a centri beat a twinscrew in a similarly modified car with perfect shifts and conditions? Also is a the 2650>2.9?

First, yes the 2650 is better then the 2.9. More efficient means more power.

Second, I can tell you from experience as I have a P1 on my M6 car.

6th to 3rd on the highway results in nothing more then the rpm coming up and the car leaving. It’s instantly into boost and accelerating....hard. Within 60 seconds you can be upwards of 170+ mph. Depends on when you run out of gumption.

Downshifting to second on street tires and going WOT results in nothing but the traction control trying to fight your foot. If you turn it off, you end up like me....needing new rear street tires.

Now on to the bigger question of which is better....JUST PICK ONE!

There is no right or wrong answer. The twin screw and roots super chargers are not bad products. Neither is the ProCharger or ECS offering.

I went with ProCharger because of the price stand point. It was $2000 less then any PD blower on the market.

I also like the air to air intercooler when I’m driving down the road. I don’t have to worry about an intake charge getting too warm. My IAT’s cruising down the road are within 20* of ambient at worst. Usually it’s within 10*.

There are benefits to either, but it really comes down to which one do you want?

[laynlo15]

I roll raced at the Street Car Takeover and was consistently close to 138 at Gateway Motorsports in October. Ran several 137's and 136's. My car does trap at 135+ from a dig at the track also and have been over 136 on one occasion. I have the 2300 Maggie and wouldn't have anything else. Its a stellar setup and next spring I'll be trapping close to 140 with my changes this winter. .