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TD's Vs. Catback

This is a discussion on TD's Vs. Catback within the External Engine forums, part of the LSx Technical Help Section category; Men, I have true duals on my Camaro. Some one said there is just a small gain with true duals. ...

  1. #21
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    Men, I have true duals on my Camaro. Some one said there is just a small gain with true duals. When I went to duals, I picked up 15 horse power. What exhaust system did I change from, you ask? I changed from SLP's big 3 inch system to 2 1/2 inch duals. I am running a stock engine with the stock cats. I thing that a gain of 15 horses is a nice gain for a stock motor. Wouldn't you say?
    JEB

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    Quote Originally Posted by JEB View Post
    Men, I have true duals on my Camaro. Some one said there is just a small gain with true duals. When I went to duals, I picked up 15 horse power. What exhaust system did I change from, you ask? I changed from SLP's big 3 inch system to 2 1/2 inch duals. I am running a stock engine with the stock cats. I thing that a gain of 15 horses is a nice gain for a stock motor. Wouldn't you say?
    dyno sheets and mods?

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    Quote Originally Posted by JEB View Post
    Men, I have true duals on my Camaro. Some one said there is just a small gain with true duals. When I went to duals, I picked up 15 horse power. What exhaust system did I change from, you ask? I changed from SLP's big 3 inch system to 2 1/2 inch duals. I am running a stock engine with the stock cats. I thing that a gain of 15 horses is a nice gain for a stock motor. Wouldn't you say?
    Exact same dyno machine used for the before and after reading?
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    I'd rather be bi than full homo!!!!

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    Quote Originally Posted by JEB View Post
    Men, I have true duals on my Camaro. Some one said there is just a small gain with true duals. When I went to duals, I picked up 15 horse power. What exhaust system did I change from, you ask? I changed from SLP's big 3 inch system to 2 1/2 inch duals. I am running a stock engine with the stock cats. I thing that a gain of 15 horses is a nice gain for a stock motor. Wouldn't you say?
    im still not buyin this at all......

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    So what are we supposed to be looking at here ?
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    Quote Originally Posted by 9T8W66 View Post
    So what are we supposed to be looking at here ?
    Oops! Sorry..

    Go to that link and click on BASSANI DUAL EXHAUST

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    NA times

    distance --- stock --- cutout --- cutout colder --- Bassani
    60ft ---------- 2.033 ---- 2.073 ---------- 2.031------------ 2.044
    330ft -------- 5.788 ---- 5.822 ---------- 5.759 ----------- 5.723
    1/8 ----------- 8.808 ---- 8.833 ---------- 8.729 ----------- 8.656
    mph -------- 82.33 ---- 82.55 ---------- 83.70 ------------ 84.27
    1000ft ---- 11.404 ---- blank --------- 11.278 --------- 11.196
    1/4 --------- 13.606 --- 13.636 -------- 13.449 --------- 13.345
    mph ------ 101.66 ---- 101.58 -------- 104.05 --------- 105.15

    Not a bad gain but it's vs a stock system, the real question is wouldm't a 3" or larger catback setup make a similar gain ? That and the Bassini setup uses the traditional routing of the stock catback and all those exta bends can sacrifice power (esp the 180* one at the rear).JMO

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    Quote Originally Posted by 9T8W66 View Post
    NA times

    distance --- stock --- cutout --- cutout colder --- Bassani
    60ft ---------- 2.033 ---- 2.073 ---------- 2.031------------ 2.044
    330ft -------- 5.788 ---- 5.822 ---------- 5.759 ----------- 5.723
    1/8 ----------- 8.808 ---- 8.833 ---------- 8.729 ----------- 8.656
    mph -------- 82.33 ---- 82.55 ---------- 83.70 ------------ 84.27
    1000ft ---- 11.404 ---- blank --------- 11.278 --------- 11.196
    1/4 --------- 13.606 --- 13.636 -------- 13.449 --------- 13.345
    mph ------ 101.66 ---- 101.58 -------- 104.05 --------- 105.15

    Not a bad gain but it's vs a stock system, the real question is wouldm't a 3" or larger catback setup make a similar gain ? That and the Bassini setup uses the traditional routing of the stock catback and all those exta bends can sacrifice power (esp the 180* one at the rear).JMO
    You have to figure the amount of gains that have netted this ET. And I never said that the BASSANI was the best performing TD's OTA.

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    No Arguments on that here.
    I was going to say a traditonal true dual setup will show better gains. But on a relatively stock or bolt on car with headers is it worth the expense and the sacrificed ground clearence for a few extra HP ?

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    Quote Originally Posted by 9T8W66 View Post
    No Arguments on that here.
    I was going to say a traditonal true dual setup will show better gains. But on a relatively stock or bolt on car with headers is it worth the expense and the sacrificed ground clearence for a few extra HP ?
    Money, Money, Money!! No, it is not worth the extra coin especially if it is not mandrel bent.

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    Quote Originally Posted by 9t8z28 View Post
    Money, Money, Money!! No, it is not worth the extra coin especially if it is not mandrel bent.
    Agreed

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    Quote Originally Posted by 9T8W66 View Post
    Agreed
    Yup, and the thread starter initially stated that he either wanted a cat-back or Texas Speed TD's. They are both in the same price range. As a matter of fact, you can make this same TD setup for less than the cost of the TSP's

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    Quote Originally Posted by 9T8W66 View Post
    NA times

    distance --- stock --- cutout --- cutout colder --- Bassani
    60ft ---------- 2.033 ---- 2.073 ---------- 2.031------------ 2.044
    330ft -------- 5.788 ---- 5.822 ---------- 5.759 ----------- 5.723
    1/8 ----------- 8.808 ---- 8.833 ---------- 8.729 ----------- 8.656
    mph -------- 82.33 ---- 82.55 ---------- 83.70 ------------ 84.27
    1000ft ---- 11.404 ---- blank --------- 11.278 --------- 11.196
    1/4 --------- 13.606 --- 13.636 -------- 13.449 --------- 13.345
    mph ------ 101.66 ---- 101.58 -------- 104.05 --------- 105.15

    Not a bad gain but it's vs a stock system, the real question is wouldm't a 3" or larger catback setup make a similar gain ? That and the Bassini setup uses the traditional routing of the stock catback and all those exta bends can sacrifice power (esp the 180* one at the rear).JMO
    I dont like going by track times, the slightest change can be purely human error.... dyno's are a lil more honest...

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    Quote Originally Posted by suede View Post
    I dont like going by track times, the slightest change can be purely human error.... dyno's are a lil more honest...
    I think you have it backwards. Dino's are the ones who are not honest. You can gain 15 HP just by going to a dino down the road... Or lose 15 HP on the same dino you have been playing on all day.

    When you are talking about actual mods, the track is the only way to tell if they made you faster. Exhaust is alittle different IMO. As the gains will be minimal in comparison.

    In the long run though, track times prove way then Dino numbers.

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    Quote Originally Posted by Hi-Po View Post
    I think you have it backwards. Dino's are the ones who are not honest. You can gain 15 HP just by going to a dino down the road... Or lose 15 HP on the same dino you have been playing on all day.

    When you are talking about actual mods, the track is the only way to tell if they made you faster. Exhaust is alittle different IMO. As the gains will be minimal in comparison.

    In the long run though, track times prove way then Dino numbers.
    right but what im saying is if your going to do a before and after on a dyno, chances are your going to do it the same day, on the same dyno, yes i realize heat and humidity are a bitch, but that is a factor at the track too. Same for same ill take a dyno result over a track time, but to each their own

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    I agree that there are too many variables when it comes to racing at the track but track times arent the story anyway, Trap Speed is the best indicator of HP. But the diifference in altitude from one track to another can make huge differences in E.T and MPH that's why you can't really compare one persons track times to another unless they were at the same track.

    Dyno's are tools for tuning nothing more. Unfortunately too many people use them as bragging rights. In reality the numbers don't mean squat, Because in a drag race the slightly more powerfull car is not always the winner.

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