ProCharger has a new short video out which addresses the difference in RWHP observed in different installations: They attribute it to differences in the native HP observed in the "before" Dyno numbers between various C8s. In general, they expect a 45% increase in RWHP on 93 octane fuel.
So, for those contemplating having a ProCharger supercharger installed, it might be worth having a Dyno run done on your car before making an installation decision for your car if you expect "big" numbers.

They also address doing a self install (~15 hours) and state that a HTC solution is coming soon.......

Here's the video link:

 

J5isalive has been the only one coming forth with actual real details, and by my math, he is nowhere near 45% over stock. More like 31%.

https://www.corvetteforum.com/forums...-2-review.html

 

Definitely watching this, as I’ll be starting a track mod journey with a C8 Z51 this season…thanks for doing the pioneering work!

 

As far as i know a bunch of kits were sold and shipped.... sure are a lot of tight lipped people out there from shops who have done installs.
My post install dyno wasnt perfect, clearly we had some timing being pulled for some reason or another, be it spark blow out, engine knock, etc etc... Dont think i'd be at 45+% increase on a perfect run. But I digress, again my purpose is to track the car, heading to Barber this weekend and will see how it performs. Gonna be cold so grip will be at a premium unfortunately. On the street for the 40ish miles i have put on the car it drives great!

 

Wishing the best for your Track outing this weekend!

You may have mentioned it in a prior post, but do you recall what your "before" Dyno numbers were, and also is your ECU flash/tune the same as what was applied to the C8 used in their marketing youtube video?

 

His before/after #s are plotted in his other thread: https://www.corvetteforum.com/forums...-2-review.html

 

I don’t see his before numbers, just an estimate of what C8’s typically dyno.

 

Post #11, top graph. At the bottom of that graph are the peak numbers of stock and then modded.

He also updated now with results at a track.

 

perfect! thanks! The stock dyno really makes the supercharged dyno look low, because that is a relatively high stock dyno, correct (I haven’t looked at a ton of stock dynos)?

 

I watched a Procharged C8 run 11.9 @ 120 this past week.... At Bradenton in decent DA..... I can only hope that it is not tuned.....

 

Yeah .....jasinedward I did in fact watched another one go 10.7 close to 126mph. However the c8 didn't seem to have that much left due to his 60ft at 1.57 with a drag pack. Still the numbers are close to maxed out bolt-ons. Hopefully to see you again in March.

 

My C8 baselined at 435rwhp. Totally stock. That about 30hp more than a 19lt1 vette.
Just finishing up the stage 2 procharger,we will see the after numbers in a few weeks.

 

I went back through the video and it looks like it was the same car..... just 2 different passes. Really disappointing results for a 20k kit.....

 

Wut? I am getting ready to do some mods on my NA HTC Z51 and decided to do some Dragy benchmark runs on a local, well-paved empty road, and got 1/4 miles, back to back of 11.42s and 121 MPH, with crap for launches (I use Track/Dry, but had a hard time breaking 3 seconds), even tho I had Sport Cup 2 tires on. ( Forgedlite MC5 wheels with maybe 5-6 lbs less in the rear). The worst run I got was 11.73 @ 119 MPH. Dragy says my 0-60s were closer to 3.2 with 1 foot rollout, but the PDR says more like 2.9 or 3.1 or so, seconds. PDR seems to be a bit optimistic. Does this Procharged C8 just not know how to launch? That seems real slow for "any" amount of added HP.

 

The same C8 had a 1.57 60ft and that's really good launch considering at Bradenton Florida Drag Strip. But we have a NA C8 with nearly maxed out bolt-ons going 10.30-40s. And another c8 recently going 10..80 only with minor bolt-ons. I believe that's a pretty good comparison due to the fact they are at the same track with similar conditions. I am quite sure the Procharger is faster......however that was my observation. For what I have gathered the Procharger power seems to be limited due to the whatever so-called tune they have, especially on that stage 1. The owner/driver had several runs that day and the best I saw was 10.70. Again....his 60ft was fine but it's just the fact the car should be running at least 130 traps like that NA C8 at the same track.

 

I went back through the video and he did run a 10.7... but none of the F/I setups are very impressive for the price point. In order to run any really impressive numbers you have to spend 40-60k.

 

If I spent 20-25 grand on a supercharger kit with install and ran those times I would be pissed. Takes HP to run mph. I just don’t think it’s there.

 

I've seen a turbo c8 run 10.9.... a procharged C8 run 10.7.... and a full bolt on C8 run 10.3.....

 

exactly…😉

 

I know this has been brought up before but we have been in the high 9's with our C900 TT C8 on a stock engine setup many times. This was at around 140mph

Idc if the FBO C8 is running on unicorn ****... there's no way a C8 is making enough power to run 10.3 at 133mph without forced induction or nitrous. There are plenty of drag racing calculators online that will also agree with this comment if our experience isn't enough to be trusted, they all show it will take at least 580whp to run this trap speed in a 3600lb car (C8 ranges from 3650-3900lb) . Also, The C8 ECU operates off a tq based model. The factory calibration on the ECU starts closing the throttle at over 600ft lbs of tq which means that the car is killing power towards redline which will make it so the car will need to be making in excess of 580whp so that when the throttle starts to close it will still be making enough power to keep the car moving forward fast enough to achieve this mph. If he has the car tuned through trifecta then at least the throttle will stay open but again saying that the car is making over 130whp from factory with bolt on upgrades is super far fetched..

Also, if you think a drag racer is actually going to be honest about his mods then I have a jar of "Special Air" for sale haha.

I would ask the group what sounds cooler to post " I have the fastest N/A C8 in the world" Or My C8 runs low 10's at 130+mph on spray like several others have already done" ?

We never want to deter anyone from making there car more fun and personalized, but giving people false hope with misinformation grinds our gears.....

This post is not designed to throw shade at anyone just to explain facts and figures so people don't have unrealistic expectations.

Thanks
Andrew