1/4 Mile Times
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1/4 Mile Times I have a 98 Trans Am with LS1 - Air Box - Only Pipes from Cats back with Automatic & 2.73 gear. What kind of et could I expect for the 1/4 mile. Are there any aftermarket exhaust systems that would produce more horsepower than only the pipes back from the cats? Thanks for your estimates of et's and the exhaust systems.
Thanks
Thanks
mid-high 13's.
ive got the same exhaust, sounds badass IMO, and has to be the bst flowing (obviously), but i hear that more power is made with a catback system. i figured flow and hp gains were hand-in-hand, but im not too sure. i do know that the ls1's like a little backpressure from an exhaust, and thats why havin an aftermarket exhaust system gives more power gains, while !muffler is still the best flowing.
someone back me up tho, not too sure.
ive got the same exhaust, sounds badass IMO, and has to be the bst flowing (obviously), but i hear that more power is made with a catback system. i figured flow and hp gains were hand-in-hand, but im not too sure. i do know that the ls1's like a little backpressure from an exhaust, and thats why havin an aftermarket exhaust system gives more power gains, while !muffler is still the best flowing.
someone back me up tho, not too sure.
Our cars don't need backpressure, that's a myth. It's all about keeping the exhaust velocity up. Backpressure is always bad, no matter what anyone tells you. If search works good enough (hit & miss lately) there's plenty of threads on this. Your car may "feel" faster with backpressure because it moves your powerband to lower rpms, but it's choking in the upper rpms. Take a look in the external section, you'll find all the info you need. 
Originally Posted by kyles2000z
so does this mean that !muffler offers best flow AND power gains?
. Like I said, poke around in the external section and learn for weeks...... 
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Originally Posted by ernie22golf
I have a 98 Trans Am with LS1 - Air Box - Only Pipes from Cats back with Automatic & 2.73 gear. What kind of et could I expect for the 1/4 mile. Are there any aftermarket exhaust systems that would produce more horsepower than only the pipes back from the cats? Thanks for your estimates of et's and the exhaust systems.
Thanks
Thanks
Ski
Originally Posted by Rebelord
With a lid and !muffler..i say 13.4-13.6@103-106. My '01 bone stock a4 w/2.73s ran 14.0@103. I put a lid and !muffler same night and ran 13.4s. You should be around there. BTW, put it in D when you stage, but you'll still be in 2nd gear when you go through the traps. Seems like it takes it forever to change gears.
Ski
Ski
thats funny because i was there and i dont remember you swapping out those "that night" and btw I ran the 13.4, not you......
