what power gains can I expect from an x pipe?

[atvcrazy]

I have a 99 cobra and was thinking about getting a bassani x pipe with cats, what kind of power gains could I expect

 

[Craig Mack]

I don't know if you will feel the difference below 5000rpm, but your engine will revv a lot faster. That's what I noticed with my UPR offroad X-pipe anyways.

I have a friend with an '01 Cobra with a bassani catted X, and he swears that the cats give a better torque curve, which makes sense. You will lose power below 2500rpm, but will gain power where it counts (3500+)

The bassani is a quality peice and i'm sure you will enjoy it, but you might have to take it to the dyno to see the gains. I'd say you'll gain between 8-14rwhp.

 

[droptopsnake01]

8rwhp, not that much, but it will sound bada**.

 

[atvcrazy]

a friend of mine got the off road x pipe from bassani on his 03 gt with flowmasters, it sounded kinda raspy, do the catted pipes have less rasp?

 

[Craig Mack]

8rwhp, not that much, but it will sound bada**.

You don't think an offroad X/high flow catted X will gain 8rwhp over the stock pos?? 2.25" crimp bending, 4 restrictive cats vs. 2.5" mandrel bent, no cats or 2 high flow cats with a 7000rpm revv range....I think 8 peak HP is entirely possible if not a little under the norm.

atvcrazy: Different brands of X-pipes will give off more/less rasp. Quite a few bassani o/r owners have complained of lots of rasp with chambered mufflers. My UPR offroad X (different design) rasps a little, but I love the overall sound. Cats will mellow out the tone and tone out some of the rasp as well over offroad pipes.

 

[MystiChrome Coupe]

You will notice the sound difference more than the power difference with a catted X, IMO. Can't say with the O/R ones, I've never had one.

On my 2001 Cobra with a catted X, catback, C&L CAI setup & steeda U/D pullies I gained a total of 32 HP over stock. I don't know how much of that was from the X pipe.