Factory Y-pipe?
Re: Factory Y-pipe? The car actually made a lot more power and sounded MUCH better with the longtubes on it. So you think that it wont make any difference if I change to a larger Y-pipe?
TECH Fanatic
Joined: Nov 2001
Posts: 1,324
Likes: 0
From: Corona CA
Re: Factory Y-pipe? Some folks may call BS, but I dyno'd a stock 2000 SS before and after 2.5" custom Y install. 15rwhp. Got witnesses. Not sure why it gained so much. But it showed up on the track as well. Cut 0.13 off my ET. 13.01-12.88.
Factory Y-pipe? As of right now I have basically every bolt on for my car right now, but when I installed the Grots I just had my factory Y-pipe modified so it would work with the headers.
So my question is how much of a gain would I see from taking off the factory Y and going with a 2.5 or even 2.75 Y-pipe?
So my question is how much of a gain would I see from taking off the factory Y and going with a 2.5 or even 2.75 Y-pipe?
Joined: Nov 2001
Posts: 34,627
Likes: 2,543
From: Schiller Park, ILL Member: #317
Re: Factory Y-pipe? [quote]Originally posted by McRat:
<strong>Some folks may call BS, but I dyno'd a stock 2000 SS before and after 2.5" custom Y install. 15rwhp. Got witnesses. Not sure why it gained so much. But it showed up on the track as well. Cut 0.13 off my ET. 13.01-12.88.</strong><hr></blockquote>
Did you use a FM Y collector? Did you remove/gut the cats at the same time?
<strong>Some folks may call BS, but I dyno'd a stock 2000 SS before and after 2.5" custom Y install. 15rwhp. Got witnesses. Not sure why it gained so much. But it showed up on the track as well. Cut 0.13 off my ET. 13.01-12.88.</strong><hr></blockquote>
Did you use a FM Y collector? Did you remove/gut the cats at the same time?
TECH Fanatic
Joined: Nov 2001
Posts: 1,324
Likes: 0
From: Corona CA
Re: Factory Y-pipe? Heck, I drove into a muffler shop and told them to make me 2.5" Y-Pipe and throw a cutout on it. I went and had lunch. Came back and there was an Aluminized Mild Steel 2.5" Y stuck to my bone stock cats and a 3" Zed-style Cutout. I assume it was mandrel bent, how else would you bend it? Then I drove to the dyno.
Cost ~140 intalled. Looks good, fits good. Dyno'd +15 capped, +18 open.
Something does sound fishy, because no one else is getting that big of gains from a Y-pipe. Even SLP, "King of the Inflated Horsepower Claims", says they are good for 5-8.
I'll take it though. I'm no dyno-racer. I test the car on a dyno, then run it at the track. So far, the dyno agrees with my results. My theory? I don't have one. It doesn't make sense.
Cost ~140 intalled. Looks good, fits good. Dyno'd +15 capped, +18 open.
Something does sound fishy, because no one else is getting that big of gains from a Y-pipe. Even SLP, "King of the Inflated Horsepower Claims", says they are good for 5-8.
I'll take it though. I'm no dyno-racer. I test the car on a dyno, then run it at the track. So far, the dyno agrees with my results. My theory? I don't have one. It doesn't make sense.
Trending Topics
Re: Factory Y-pipe? [quote]Originally posted by McRat:
<strong>Something does sound fishy, because no one else is getting that big of gains from a Y-pipe. Even SLP, "King of the Inflated Horsepower Claims", says they are good for 5-8.
I'll take it though. I'm no dyno-racer. I test the car on a dyno, then run it at the track. So far, the dyno agrees with my results. My theory? I don't have one. It doesn't make sense.</strong><hr></blockquote>
I think the slight increase in exhaust flow bumped your A/F ratio in the direction it needed to go and the change in A/F resulted in most of the gain. Did you have A-tap logs that might show a A/F change?
<strong>Something does sound fishy, because no one else is getting that big of gains from a Y-pipe. Even SLP, "King of the Inflated Horsepower Claims", says they are good for 5-8.
I'll take it though. I'm no dyno-racer. I test the car on a dyno, then run it at the track. So far, the dyno agrees with my results. My theory? I don't have one. It doesn't make sense.</strong><hr></blockquote>
I think the slight increase in exhaust flow bumped your A/F ratio in the direction it needed to go and the change in A/F resulted in most of the gain. Did you have A-tap logs that might show a A/F change?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
