Vvt hp??
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Joined: May 2024
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Vvt hp??
Please excuse my ignorance on the topic, but something I stumbled upon piqued my interest. I just had a stage 1 LT1 TSP camshaft kit, E85, CAI, and LT headers installed and tuned by 21st CMC. Car made ~490WHP which was in the ballpark of what I expected. I saw an advertisement from a tuner shop (Carlson Performance and Dyno) in NC, where they got a 2024 Camaro SS with cam, intake, 103TB and headers that made 560WHP!! Initially, I called BS, and that got me talking with a few folks in the comments. The owner of the car actually reached out, and we had a very civil conversation, but he kept mentioning VVT. My kit has the VVT delete or phaser lockout kit, which I admittedly don't know a lot about. He said VVT makes a huge difference. Trying to figure out how in the world this car made 560WHP with those mods. Isn't that close to 650 HP at the crank? SO that would be the equivalent of +200HP from those mods? I understand each car, dyno, etc. is different, and it's just a number, but does that not sound incredibly high?
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Any exhaust gains after the headers would be somewhat negligible on these cars, no?
You didn’t list your mods so there’s really no basis for comparison 😕 but putting round numbers and leaning more favorable in terms of gains to his mod list:
Cam: 60HP
intake: 30HP
headers: 50HP
TB: 20HP
It’s very possibly a mod or additional information was left out as well…560whp just seemed high with the mods listed and I thought maybe I left something on the table with my current setup being just shy of 500…
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My thoughts exactly... It didn't make sense to me when he has stock heads, a "stage 2" BTR cam, which isn't anything crazy and definitely isn't going to add those kind of numbers with the associated mods.
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Maybe I should look into those... Would I need a re-tune or would the ECM be able to calibrate if I installed those?
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My 2 cents, its a high reading dyno. This is why I don't place too much weight on dyno numbers and instead look at actual times. They are useful tools for seeing how much horsepower a particular car picked up, but much harder to compare different dyno vs dyno. Too many factors to look at like correction factor, weather conditions, dyno type, transmission, tire, etc. Don't get too caught up with the dyno it's just a number. Also, having a big enough cam to pick up the power that it is saying it would need to with VVT not locked out would probably be impossible in my opinion. I have a BTR stg 2 cam and they said that I should lock out VVT and not limit it. My cam did not pick up anywhere close to 60whp and that was compared to an even smaller cam than was in the lt1 (the lt4 cam is very small and smaller than the lt1). So, in my opinion don't get caught up in the number, I have seen a car that dynoed 100hp less beat the brakes off of a car with 100 more hp. All dynos are is a tool. I'm sure your car is a blast to drive and that's all that matters.