2000Z28 stock, has flowmaster catback. How much power could I expect to gain going from the stock manifolds to long tubes with no cats? And yes I did a search and couldnt find anything for you board ****'s. Thanks in advance

 

15-25hp.

 

50rwhp. at least.

 

you will gain 20-30hp. Nowhere near 50

 

 

Congrats, you win douchebag of the day award. Now I see why you have a LS1 running 8.90's in the 1/8th

 

Really?! i'm pretty sure I read that in Muscle Mustangs and Fast Fords.

 

Wow... you win the dumbass of the day who can't pick up sarcasm.

a low 13 second bone stock A4 with 2.73's.... yeah... must be driver error.

 

And you probably wonder why your car runs 8.90's

 

take it easy on the 8.90s thing, maybe he doesnt have money...like me....my car runs 8.7's which aint much better, but that does not mean that i dont know **** about my car...I mean theres NO WAY it would be 50hp ....but still

 

holy christ... sarcasm.
you guys are dense at best.

StreetKing - if you're so smart / superior - why are you asking such a rookie question?

 

What it dont add a hundred HP????? Thats what I thought

FYI dont take the above statement seriously
I just got my LT's on a few weeks ago and It feels like a 10-20 HP gain with just bolten them up and hopefully Ill see once I get it tuned in december. But it really seems to help the higher in the RPM's you get

 

only adds 100hp if you put one of those Tornado Superchargers on the car the same time as the LT's.

 

Ok now, back to topic.
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-LT's will net a great power difference for the entire powerband. You will see around 18-22 hp, 20-30 Tq.

-Mids can get respectable gains too, around 14-18 hp, 20 Tq.
The difference is, after around 4000RPMS, their help decreases. Still great headers though, get atleast 1 5/8".

Shorties - JUNK. Less hp and tq then both. Youre LS1 basically already has shorties, so these should not be considered an option.

All these numbers are averages from the data I have collected over several months, and these are usually without a tune.
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You can stop being a doush now. Thanks.

 

never said I was smart/superior, but anyone will know headers wont add 50 hp. If I was looking for a joke I would have asked for one.

 

your not on here talking **** either

 

you will get anywhere from 15-30 depending on the catback your using, or if you have cut outs. less for you since your using a slowmaster muffler. or chokemaster whichever you perfer.

 

Don't bother asking, just look in a mirror.
When you recover from laughing, use the search button.

 

I guess it depends on what is the most restriction in your system.

I put on the fast intake, ported TB and gained a little, but when I then changed to LT's then I probably gained 25RWHP. But if the rest as stock and I changed to LT's I may have only gained 15-20. It all depends on what you have to start with.

 

Re-read the original post, carefully