What kind of true hp gain can be expected with the installation of a Borla catback system?

I ordered one and should have it on in the next week or so. I can't wait!

 

about 15 hp don't expect to feel alot of power gain you will only see it in times

 

I felt a SOTP difference with my Borla. It was the first mod I did (not counting the K&N) and I couldn't be happier. Which one did you get - the adjustable or non-adjustable??? As far as power goes, I'd say you'll see 12~18 rwhp depending on what system you went with.

 

12-18rwhp is pushing it, IMO.

I think the "seat of the pants" difference is probably in your head, most likely caused by having a car that sounds a hell of a lot faster than it did before. I didn't notice one.

Gains may be 10-15hp at the crank like the other guy said.

 

17 hp and 12 ft-lbs at the wheels

 

the only time you feel a seat of the pants feel is with headers.

 

when i got borla, the main difference i could tell was at higher speeds....punching it on the highway felt so much nicer after i got borla.

 

If you're commenting on all cat backs that's a load of crap. The difference I've noticed with my Loud Mouth is not in my head.

 

And there's also people out there that claim they feel a significant difference with minor crap like a TB bypass or a MAF descreen.

I doubt your Loudmouth gave you more power than my wide-open Borla, and like I said, I didn't notice much. The gains are probably there, but there's no way I could honestly proclaim "wow, this car feels exactly 14.7hp stronger than it was two hours ago!"

So say whatever you want.

 

I'm with tailwindxr7 you might notice a little but not enough to say now that is horsepower... the louder sound may make you think you feel the power

 

And if it helps... My 1st catback was the flowmaster, then i got a borla adjustable, and currently i have the loud mouth and sound wise i like the l/m best becaus it has more of a muscle car sound and i couldnt tell a difference between the borla when it was wide open and with the smallest plate. And some people say the l/m disent sound good with headers, but it sounds really good on my car, a real deep sound, but at idle when its cold it does have a little airy sound to it. But from a performance stand point i gained 2 tenths on motor going from flowmaster to borla. I never did a nitrous pass with the borla. But i went from 7.4s to 7.2s on nitrous with the l/m.

 

Then I say there's something wrong with your car. And your comment about your Borla flowing better then my Loud Mouth is probably all in your head too.

 

I can't say much about the Borla or any other muffler system for that matter yet... mine is still stock. But I can say that the sound from a stock setup is BORING! A Z28 should sit at a stop and rumble... not just sit there and quietly hummm like a pu**y. When I hit the gas i want to be able to scare small children and old people. So... any body got any suggestions that would help me out?

 

If you're looking for very loud then go with the Loud Mouth.

 

I would have to say you have to hear all three some like diffrent sound I like the borla flowmaster mut not so much loud mouth