@@jimmiddleton825 just what the customer wanted- and the exhaust he supplied us came with cat delete pipes.

Thank you!

@@toedtchris6433 thank you

1000 miles since the work. No CEL. Luck of the draw I guess, others get CEL. Can't wait for tuning...good god these things will scream.

@@kevindavidson2291 thanks glad you enjoyed it. Come see us anytime! Erik

Thank you

email me, I will guide you, and sell you the best for your needs. www.flhighperformance.com

@@LateModelPerformance it’s a quality part- top to bottom- hands down. Thanks guys!

Thank you for checking out the video!

Both bad add cars

@@alexchavez9083 right on brotha

Keep in mind, the gains are cumulative. Just how we wanted to structure this test. If we had tested each product by itself on an otherwise stock car, gains would have been more significant from product to product. That being said, it is rare that someone just puts ONE mod on their vehicle. More likely they will add a combo of parts, like we did, so that is what we thought would have more value to the viewer in the end.

I think also it’s important to remember these mods would be helpful for some future mods that may be in the cars future. Kind of how upgrading part of the fuel system may not result in hp gains but without that some future mods would have less impact overall.

Agree and agree - C8 isnt a cheap car to mod...but remember tuning eventually will really help us make more with these mods!

​@floridahighperformance thank you for the video as it was helpful. It's been almost 5 years since the C8. I don't think GM will unlock computer for various reasons, only they know. They might be concerned over drivability issues or transmission issues. Time will tell.

Thank you for checking out the video!

I’ll see what I can do

Funny enough, I have not yet been able to test JUST the headers on a stock car. I provided the vehicle to Kooks to build the first set at their facility, but the car was tested on another dyno, not mine. As soon as I install just a set of headers on a Z06, we will create another video on that...

"Corvette Tax" is real with the C8 brother!

Why ? What didn't you like ? I'm planning my winter upgrade package and it's intake, throttle bodies, cats and Valvetronic exhaust. Now I'm second guessing my choice lol... even the weight savings is worth it ...lmk your thoughts, thanks !! Edit, 2024 Z06 coupe

@@poserwannabe1 so number one I found the same exhaust (after buying it and seeing how it came in) on 20 different websites and rebranded. Secondly after we put it on, it definitely toned it down. I confronted Ben about it and said if it was possible prior to filming on it maybe i’m going deaf all is possible from dealing with loud cars. So he then corrected what I said and simply said “we did not advertise an increase in sound just tone.” Last time I checked I purchased exhausts to increase sound even if it’s minimal not decrease.. May be just me but my opinion. Had many issues with the system throwing codes due to faulty harness (Chinese). Multiple people I brought the car around also noted it was a little muffled. That pretty much did it for me. Can check out our first video on black label auto black c8 z. Going to be uploading the other clips as soon as we get them uploaded. Reinstalled stock

@@D1xLsx thanks for reply !! I agree 100% I ALWAYS want more bark, not less. Now that you gave me all this info what exhaust do you recommend ?? I really think it should be titanium though right ?

@ I actually am going to go with soul next. But waiting because if I do it i’m also doing high flow cats, but still iffy on it. I may just keep stock exhaust and do the high flows from soul

@@D1xLsx while mine is down for winter I'm doing everything at same time sooo cats and exhaust are happening for sure. Now I'll look at Soul hahaha...it's hard to decide, the differences are minimal at best, but I still want the best, thanks !! Edit , just checked their site out, looked at cats and exhaust about 12k$ nowhere could I find what it's made of ??

It was our pleasure. Wasn't easy, but worth it in the end if it helps even one person. You have to consider one thing, this experiment was testing the cumulative results of each mod...not each mod by itself with all else being stock. There are already a ton of videos on youtube that show individual part results on stock cars. None of them show this type of result. And let's be honest, who adds ONE mod and nothing else? NO ONE. At a min, most folks are going to add an intake, and exhaust....so I felt that this test was more realistic in that respect. The Eventuri def picks up power. I showed that. I would also pair that with a set of the throttle bodies since you are already working in that area. Second would be a custom exhaust of some sort - from a performance stand point and weight saving stand point...and SOUND. WIN WIN. Hope this helps.

Kooks headers & x-pipe have always been a #1 choice for me. They're a bit pricey, but well worth it IMO.

@@danielfair4675 top notch stuff, check out the episode where we took a trip to tour their facility and work with then on c8 z06 header development!

Thanks guys - always appreciate your feedback and encouragement. Erik

the factory wheels are insanely heavy… you have to pay to play for real weight savings but almost aftermarket wheels aren’t going to weigh any more than the cinder blocks the car comes on. CF wheels excluded, obviously

gains are relative, car hauls butt and sounds great, client is happy and we created content. I would say in the end, well worth it.

@@floridahighperformance a lot of effort goes into this type of video. Definitely good content.

@@finwaydiddy1977 427 would have been epic

It shows the dyno of the Eventuri only which includes mid-range at 8:20. The testing over three days had same engine temps and used STD CF on the dyno which was also shared. How is that not apples to apples?

@ You think the DA and conditions are the same from day to day? He’s talking about gains of 2-5hp which easily can be explained with changing conditions not mod performance.

@@superchargederay though that's true it would have an affect on SAE numbers. They use correction factor to remove that variable.

@@Brandonsgarages I agree 100%. It was cumulative. In a perfect world we would test each mod independently on an otherwise stock car, but I figure most folks aren’t modding their car like that…most will do it this way- so it was more realistic. Also- I can’t spent 5 days on a clients car- we still have a business to run. we took this opportunity to crate this vid as we modded the car- took 2 extra days to complete and countless hours to edit. People don’t see what goes on to create a video like this. Thanks for watching!

@ thanks for doing it the corvette community appreciates it

While I don’t disagree with you- let’s face it- there are already a lot of videos out there that do something similar to that. Also- this is a clients car and we were on a time constraint….i would have loved to put a part on, then put it back to stock afterwards- but reality of this business is we also need to get the car done for the client. We saw this as an opportunity to modify and test the products in the same way someone out in the real world probably would. We started with the most basic mod- an intake. Then we went from there. Same way most consumers will out there. No one starts with headers in other words. Thank you for your feedback.

@ you bet. I get it from the business side of things. We run into that as well with videos we want to do but the time gets the better of you. I love the work and even doing it like you did… HARD WORK. Instead of tearing it all apart you had to put airbox back on in between etc. It’s not easy and most folks don’t understand how much work goes into a video like this.

@ it took 3 full days- and hours and hours extra…but worth it

@ Exactly! Lots of time! Thanks for posting

When we added the kooks headers the valvetronic exhaust was already installed. In the beginning of the video I listed the order of the mods wrong…that was my mistake. I said headers, then exhaust. It’s exhaust first and then headers last. Either way it sounds incredible I can tell you that!

Agreed. It was conceded by the half-hearted laugh after giving it an "A". If something doesn't perform- it doesn't perform. Simple as that!

From a HP stand point, I agree with you. From a torque standpoint, it performed well. Overall quality and fitment and sound made up for the lack of performance. If I could add 4-5 degrees of timing to this car it would have picked up more peak power without a doubt. When I grade the parts, I considered all aspects, not just the power gain. I appreciate your feedback though thanks for checking out the video and commenting…that’s why I make these!

I have heard the valvetronic in person... alone it is much quieter then stock exhaust, complete waste of money - it changes the tone, but it basically just takes out all the drama people like about the stock exhaust

There’s still a lot of people that have no idea how good the stock exhaust is on corvettes since at least 2008 + NPP option . You don’t pick up hp with new mufflers on a vette

@ that’s not quite true- I’ve picked up HP and TQ on stock C8’s with the addition of a Corsa catback. Nothing crazy but I have…guess it depends on the set up

561 was stock base. 581 was the current power output with the first set of mods before I added the valvetronic exhaust….the mod power results were cumulative throughout the video. I didn’t mods and then demod the car- I added one mod at a time starting with an intake and progressively added another mod in the sequence I thought makes sense…

Got it, I mistakenly thought you were undoing each mod back to stock to test each mod independently. My bad. Great video by the way. 👌

You’ll always get that from me- that’s why no one sends me free stuff hahahahahah

You should check out our stuff too. Definitely no BS….. we even pay for all our mods to test

@ same here- everything I have ever tested I paid for…even on my own ZL1. If I had tits and a pretty face it would all be free. SMFH

@ EXACTLY! And you don’t have to know anything about cars 😂

So a car that you can't tune makes that hp and tq show me big brother this is very impressive

I understand that the C8 ecu has been unlocked by ec tuners and others as seen on other youtube videos by @ completestreetperformance and @boostdistrict ​@jesseteague2975

The C8 in general offers poor ROI in most cases. Just how it goes. ROI will improve when we can tune the car…but yes, the “corvette tax” is real with the C8 in general- more so with the Z06

@@jesseteague2975bingo - and the sound…my god

@jesseteague2975 what? I have no clue what you are saying. Is that english?

No- the valvetronic supplies “test pipes”

@@24c8z06 NP, we call it like we see it- let the people decide. We aren’t endorsed or paid by any of these vendors so… We reset trims and he’s been driving it around now for a few weeks. I’d like to put it back on the dyno soon and just make a hit and see what happens…I’ll update it in the description if I see gains or losses. You can also follow us on IG where I do a lot of follow up posts on our videos. Thanks

@@floridahighperformance really appreciate this. Quick question do you think a throttle body with the soler throttle control with the attack filter is good as a combo for z51

@@jaditention1713yeah should work well

So with all those parts fitted together, what were the gains please? LMR got big gains with throttle body and eVenturi together

@ that’s the final power at the end of the video. The modding and testing was cumulative- I installed a part and tested- installed the next part and tested…and so on….

I’d have to go back- convert them and get back to you. We use STD CF on our testing here as it’s most widely used across the industry

@floridahighperformance appreciate it, also which gaskets were the valvetronic exhaust missing? I have one waiting to go on I'd love to have the gaskets ahead of time to give the shop to save hassle

@NP I’ll try to remember to do it and I’ll post the numbers SAE CF. They were the gaskets that go between the header collector and cat- triangular flange gasket with the three bolts….

@floridahighperformance ahhhh, so since I'm keeping stock cats mine shouldn't be missing them. Appreciate it!

Glad you liked it!

Only CEL we had was for valves- which a relearn takes care of. Exhaust came with spacers and mini cat sims…so far so good.

Katech Inc

Thank you and welcome to the dark side. 100% buy yourself a newer Zl1 1LE. Manual or auto, although manual is more raw IMO. Basic bolt ons will be more than enough power and the car is cheap to maintain...fun to drive...and looks damn good...but you know I am biased LOL! Thanks for your sub! ERIK

@ Thought I saw “pumpkin” for sale? Maybe that was wishful thinking. Favor manual for more smiles. I’m looking hard.

@@shiftsgiggles962 Never...she's not going anywhere...

Thank you for your support and comments- keep on truckin!

@@mjc3502 most truths like this come from the Military I’d say

@@scottzito4797 thank you we are testing lids on my Camaro zl1 next week

Glad you enjoyed it

Hey thanks for the kind words. This car is a manual with a camshaft, meth, and E50. The 2650 helps a lot up top. Nothing special on this build. Similar to yours. Follow the exact formula we applied to this build and you’re there. Any questions, holler at me. Erik

Fabspeed. No CEL with tuning.