TR ported TB worth 2rwhp
Originally Posted by RealLiveMD
Just thought I should post I went from 404 to 406 corrected on the dyno.
everyone was saying in my thread it is worth ~10 rwhp
https://ls1tech.com/forums/generation-iii-external-engine/596558-p-p-tb-worth.html
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Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
dynos lie. is your A/F ratio the same on both dyno runs? what about the temperature? what about the humidity?
i'd be willing to bet either your A/F ratio is less ideal, or you dynoed the 404 on a much cooler day than the 406. don't forget, a 10 degree drop in temperature is worth 1% horsepower. since you're dynoing at ~400rwhp, you should have over 450 hp at the crank. if you dynoed on a day 20 degrees hotter, that's a 2% or 9rwhp difference on the dyno. that means your ported throttle body is actually worth 11rwhp with the hypothetical temperature difference factored in.
your ported throttle body is NOT worth 2rwhp. it's worth several times that. what you have is the temperature and A/F ratio making your dyno numbers lie.
i'd be willing to bet either your A/F ratio is less ideal, or you dynoed the 404 on a much cooler day than the 406. don't forget, a 10 degree drop in temperature is worth 1% horsepower. since you're dynoing at ~400rwhp, you should have over 450 hp at the crank. if you dynoed on a day 20 degrees hotter, that's a 2% or 9rwhp difference on the dyno. that means your ported throttle body is actually worth 11rwhp with the hypothetical temperature difference factored in.
your ported throttle body is NOT worth 2rwhp. it's worth several times that. what you have is the temperature and A/F ratio making your dyno numbers lie.
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Originally Posted by TORCHD 02 TA
everyone was saying in my thread it is worth ~10 rwhp
https://ls1tech.com/forums/showthread.php?t=596558
https://ls1tech.com/forums/showthread.php?t=596558
Originally Posted by orangeapeel
Lol, I think I did, but I have seen it make close to 10 on a cammed car.
ahhh i see.. but still even if it is ~6 rwhp it will be worth it. i am gonna have Bo Whtie P&P mine
It was a cooler day and I made 411 but my tuner said that when he "corrected it" (some math formula to allow dynoes to be about equal on different days) it was 406 up from 404.... and yes I have an ls6 intake.
Originally Posted by ChocoTaco369
dynos lie. is your A/F ratio the same on both dyno runs? what about the temperature? what about the humidity?
Did somebody already post: THAT'S WHAT CORRECTION FACTORS ARE FOR!
No two dynos, especially on different days, or even the same dyno on different days... is going to deliver the exact same readings. I'm not saying that. But correction factors are going to make things close enough for valid comparisons. When a minor tweak, like P&P a TB, it's going to be hard to tell what it gained because you are talking about just a handfull of RWHP anyway.
Graph showing 8 hp/ 6 tq
https://ls1tech.com/forums/showthrea...ight=ported+tb
7.5 hp gain on a bone stock car
https://ls1tech.com/forums/showpost....3&postcount=20
Graph of a stock car with Bo White - gained 8hp / 7tq
https://ls1tech.com/forums/showthrea...orted+tb+gains
https://ls1tech.com/forums/showthrea...ight=ported+tb
7.5 hp gain on a bone stock car
https://ls1tech.com/forums/showpost....3&postcount=20
Graph of a stock car with Bo White - gained 8hp / 7tq
https://ls1tech.com/forums/showthrea...orted+tb+gains
Tech Resident
Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
Originally Posted by Cop Car
more proof that it is a waste of time.
if you need more throttle body go to 90mm
if you need more throttle body go to 90mm
let's all forget about the many, many graphs showing ~8rwhp gains, let's forget about the proven track results, let's forget all about the increased throttle response. we'll remember this one erroneous post with a dyno graph likely plagued with error due to temperature and A/F ratio being off.that was a good joke.