As I continue to read this forum the same question keeps appearing, what are the best headers and what is the best cat back system. My challenge is to see numbers from the dyno. No more opinions because you have the part on your car. I wanna see some real numbers. If possible I would love to see two people from this forum with opposite setups (e.g. SLP vs Kooks) get together and have their cars dynoed at the same time and see what the real numbers are. Theres the challenge.
That's a valid challenge, but I doubt anyone will pony the coin to put this issue to bed. I suspect the Diff. is marginal at best regardless of the LT manufacturer. Also, the chances of two Goat owners only having LT's and no other Mods. is slight at best thus making the Dyno runs NA. This issue will live on I suspect. You can check-out the Dyno sheets posted by the manufacturers, but again how real/accurate are those numbers?
First to get a "real" comparison test you would have to use the same car, because two cars will put down different numbers, period.
Start with a stock setup including the stock tune. Then put on header set "A" dyno and tune, because we all know to get the most you need a tune. Then you would have to remove set "A" flash the PCM back to the stock tune and put on header set "B". Then you would have to tune again. All the while you would have to let the car cool and make sure temps and such were as close as possible.
Man even the tuner is a variable.. Especially because tuning is almost an art form. So you could just dyno both Set "A" and "B" without tuning from the stock flash.. but thats not to say one set wouldn't take an advantage with a tune.
In the end I think your probably not going to be able to easily make a "This set makes 1hp more" statement without more hassle than its worth. Good request though.. I wish it were that easy.
Dyno numbers are worthless. With the big brands (kooks, stainless works, qtp) I highly doubt you will see more than a 1-3hp/tq gain.
To do this correctly it would have to be done on the same car. The DA would have to be the same during each dyon run and you would have to retune for each header. I doubt ANYONE is willing to spend the time and money to do this.
As I continue to read this forum the same question keeps appearing, what are the best headers and what is the best cat back system. My challenge is to see numbers from the dyno. No more opinions because you have the part on your car. I wanna see some real numbers. If possible I would love to see two people from this forum with opposite setups (e.g. SLP vs Kooks) get together and have their cars dynoed at the same time and see what the real numbers are. Theres the challenge.
WOW what a crappy attitude and a question with way too many variables! There is no way you're going to get an accurate number when you use 2 different cars... PERIOD! The only way you're going to get an answer to what you're asking is if you go out and buy every header available, use the same dyno at similar ambient temps and get the results you're looking for? Then you can form your own opinion on which one you want. You come to a forum, ask a question and say you don't want opinions? How is that even possible?
As I continue to read this forum the same question keeps appearing, what are the best headers and what is the best cat back system. My challenge is to see numbers from the dyno. No more opinions because you have the part on your car. I wanna see some real numbers. If possible I would love to see two people from this forum with opposite setups (e.g. SLP vs Kooks) get together and have their cars dynoed at the same time and see what the real numbers are. Theres the challenge.
I have asked the same question myself when I was shopping for headers last year. Several people would tell me what their gains were but no one showed a sheet to prove it. I did a lot of reading , contacted makers and looked at several web sites and even contacted several installers. The longest lasting headers seemed to be KOOKS or SLPs. As far as HP gains they all seem to be just about the same. I don't think any brand has a big advantage over the rest. My searching told me MOST if not all LTs will come within a few HP of each other depending on your mods & bolt on items. I went with the less expensive Pacesetters, I can't say for sure what my gain was because I had a few other items done at the same time. But most likely it will be in the 14 + HP area.
The question was asked by 6QTS11OZ, Why would I come to a forum and ask a question and not want an opinion? We'll I think you you read the complete title of the thread, it says I wanna see proof, NOT opinion. For example you say your car makes 500 horse, do you have the dyno sheets or do we take your word. A wise man once told me opinions are like a**holes, everyone has one. Facts are undeniable, proven, and tested.
The whole point of this thread was to have people prove what their cars numbers are, this would intail putting your Dyno sheets on the forum. I apologize If I ruined the opinion party.
It`s already been explained, unless YOU use the SAME car and dyno in between the different set-ups, there`s no way to get the results you want. Asking people to post their dyno sheets with different cars and different set-ups/tunes is not proving or disproving which header and CAT back is going to be the best on your car.
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