Yes you’re correct. I think we need to take into consideration these numbers are based on a conservative 91 octane tune. A stock ZO6 is making 596 rwhp, and rated at 670 hp my Magnuson is about 10 hp shy of that on the 91 octane tune. As we don’t have 93 octane here in Wa. However, if you compare the torque numbers to the ZO6, the Magnuson blows it away. I’m making 538 lbs of torque, compared to approximately 420 lbs of torque for the ZO6.

 

I would take your keys and your 26k check down to the local Chevy store and trade your car on a new Z06 if you are needing a power bump similar to this.

 

your comment makes sense but I don't understand why does one have to be so negative and discount OPs quest to make his car better. Yes, plenty of options to do something better but let's appreciate and encourage his efforts. He is not asking if its worth it. Just sharing what he did to his C8. Don't need the negative energy to bring down his parade.

 

I actually don't understand this argument. The z06 is more like 40k, reasonably 50k with gas guzzler tax and adm and what not. That's a whole new supra! There's simply no cheaper way to get 700hp out a c8.

 

. Hello my name is David Snell. I live in the Dallas area. Be interested to learn more about your tuning? Had the Boost district 720 Magnuson blower with headers Put on my car in September and they totally lied and misrepresented the horsepower it was total BS.!! Gave me a fake graph a week after I left with no identifying information claiming my car made 630 at the rear wheels when they advertise 620 to 645 out of that package!! Went to two independent other reputable shops with DYNO Jets and it made 540 to 548. We found multiple cars coming out of there in that same power range falsely advertising what they’re making and not being tuned correctly.. I’m seeking out other people who have bought one of their 650 or 720 Magnuson packages in the last two years to email me at Davidgsnell@gmail.com or call me at 469–767–2645! Selling these power packages for $20-$30,000 and we found at least five cars leaving there that have been missing 80 to 100 hp at the rear wheels. Very long story won’t go fully into but lots of stories coming out of there. I’d be interested if you have remote tuning capabilities outside of the one person they’ve been using who I’m in communication with that has also worked for Linginfelter. I’m on a temporary phone the next few days 469-374-1071. Love to hear from you about your remote tuning capabilities, but I think the assessment of more conservative horsepower with these packages is true. However…. finding out some of the cars leaving where I was at had not really been tuned at all or calibrated independently missing huge chunks of these advertised rwhp packages is flat out theft! It’s not a difference of dynos or temperatures or density altitude crazy what we have found

 

You putting a class action lawsuit together?

 

Law suit or hellfire strike lol ....he is gonna get his foot pound of flesh [sorry bard]

 

My c8 has the Maggi 700 kit for over 1 year now.. running strong, and mid 10s the few times ive had it out to the track. Installed by a local mechanic w a good reputation. All tuning done remotely through Paragon.
I see boost districts latest youtube pst running a new c8 ZO6 at 10.7 seconds in the 1/4 mile to compare one of his modded c8's. So lame! Everyone know what the new Zr1's run. sub 10's mid 140's. so misleading.
The total cost was under $25k. I pad W 5000 miles on its. 700 hp total cost $105k. Much cheaper than a C8 ZO6.

 

I worked for Magnuson during the 2650 days (2017 to 2020 plus I drag raced for them) I had one on my 16 SS which I originally started out with a 2300 Maggie. All of Magnuson tunes are 91 octane since they are based out of Cali and 91 is all you can get. The canned tunes are always rich, that's the safest for all elevations. My first canned tune on my 2300 Maggie 16 SS was pig rich, since I had purchased HP Tuners we pulled a little fuel out of the PE tables and went from 525 on the canned tune to 549 rwhp. No timing changed, that was on 91 octane also. Elevation will change those numbers also, not sure what the elevation as well as the DA and Temps in the shop where they did the dyno pulls.

 

Probably more than 40k considering the huge depreciation of C8s and the hosing by the dealer on a trade.

 

Are any of the above actually tuned for the mods done? I've done quite a few Magnuson builds on the LS platforms. Whether or not the tune was spot on either made or killed the build.

 

Did you compare the dyno sheets from Boost District and the Independent dyno you went too? If so, did you compare the graphs for the AFR? The Boost District sheet will show the date, time and other info to compare to the other dyno you went to. As someone who has learned to tune over the last 10 years the logs are really important that you'd want to see also. It just gives you so much more info when you're looking at the dyno graphs to figure out what changes need to be made, if any. I looked at BD website, and I didn't see any advertised rwhp packages, they appeared to be crank hp. I hope you get it figured out, it's a lot of money you spent..
One last thing, did you ask to take the car back to BD to put it back on their dyno so you could watch the pulls and compare to the dyno sheet they gave you after you left with the car. Can't hurt to ask, right? Buy HP Tuners if you want to learn about tuning, log all your pulls on street and the track. Learn what each line on the log means, then find a remote tuner you can work with send logs to if you want to make changes or add other mods. It's not easy and you can hurt the motor pretty easily by putting in the wrong changes. HP Tuners has a lot of valuable info on their website including forums where you can ask questions.
Did BD lock the tune so no one else can tune it? Some shops will do that. Good luck.

 

I wanted to point out that no one in this thread is mentioning the losses by the S/C itself. Doesn't that eat a significant amount of power?

 

I’m not understanding that post.. superchargers are purpose for huge gains not any kind of loss of power

 

Cost to HP tuners to crack the code is $1500, shipping ECM to and back is $100, interface between ECM and laptop is $400, I don't know how many credits you will need, but at minimum it's $400.
While you were having all this work done, did you consider getting an E85 tune as a whole part of the package?

 

It's 8 credits to tune it at 49.95 per credit, so another $400.00

 

Very interested to see the results when you get to the strip. Are you running on factory tires or do you have drag radials? Did you previously run the car for a baseline?

 

So, even if it adds 200hp, it saps up to 20% to spin itself thus the final power gain at the wheels will be less than the theoretical.

 

Superchargers have been around for the better part of a hundred years. A supercharger, cramming more air into an engine, makes way more power that what it takes to power the supercharger. That's not even up for debate. A TVS blower in particular, with its bypass valve, uses very little power when not under boost. I think Magnuson claims less than one HP when not in boost. It may take an extra 40 hp under boost to make another 200.....it's still 160 more than it would make without the supercharger.

That's assuming a mechanically driven supercharger. An exhaust driven supercharger (turbo charger) is even more efficient at increasing power. The turbo adds back pressure, which costs a little power, but way more than makes it up in total power output. Pushing more air and fuel through an engine makes more power vs a naturally aspirated engine sucking in air. Whether the extra air is being pushed through via a belt driven, mechanically driven, or exhaust driven supercharger.

 

My Magnuson is a 200hp kit, Thats flywheel hp, i gained about 140rwhp. I went from a low 11 second 1/4 mile to a 10.6 second 1/4 mile. Huge gains from the supercharger. NO hp loss.This kit gave me better than ZO6 power especially with the huge torque gain. Numbers don’t lie