rdefino said:I just spoke to an exhaust shop and he says the catback it's worth it, just swap out the mufflers. He says that my 03 cobra has a stainless steel exhaust and the catback is the say diameter as the original anyways. I wouldn't gain anything by swapping out the entire system, just swap the mufflers. What do you guys think?
Thanks
Cyberdavea said:I installed Borla Stingers last weekend... and I was pleasantly surprised. I knew I would like the sound, but I couldn't believe how much faster my car is now. The previous owner put a drop in K+N filter in, and there are no other mods done to my car. I use to punch it and the boost would sit right at 8 lbs... Now with the Borlas my boost sits right on the 10psi tick mark. I can't wait to install the JLT CAI now... hopefully I'll pick up another psi.
Theres no way borlas are restricting the exhaust flow,dynos tell it like it is .True, restriction will cause more boost but so will a CAI .When I put borla stingers on mine,the power was like night and day.I also got more boost but that was with a CAI .you'll know too when you change your exhaust and you will ,its just a matter of timeTat98Cobra said:boost is a measurement of restriction .
If you got 2 more psi from exhaust - then you just added some major restriction. Yikes...Free-er flowing exhaust should reduce restrictions, which will reduce boost - but raise power.
DHFB said:Your stock exhuast is not exactley 2 1/4 all the way through. Right before the mufflers it drops to 1.9" delivery plus the stock sound is weak. You will pick up no less than 22 RWHP from any catback on a 03 Cobra but I gaurantee your now going to struggle with which one for which sound you are looking for. I have had over 15 mustangs and love the sound of the two chamber flowmaster but you may want the pop of the magnaflow or the borla. Mustangexhaust.com is a great reference for sound but find some cars and hear it first hand. Don't worry about the stainless part; Ford uses 400 less grade SS and it will develop surface rust just like treated alum. I have a few friends that tried the Borla and absolutley hated the combo (complained it was to loud and droned out plus they lost RWT).
They are testing but I am running x-pipe w/cats. No problem. These high flow cats are so good that it's almost like running no cats. Just enough to be legal.westernstar11 said:I put a Borla Catback system on my pickup and am totally in love with the sound, so I'm dying to put one on my 03 Cobra but just can't justify the $ when the stock system is stainless from front to back.
A Catback system means that it is a complete exhaust from the cats all the way back to the tips, right? Do these Borla Stingers that I've seen you all talking about come in just the muffler alone? If so, are they worth it that way?
I think this is what the original question was, but maybe I didn't see the answer I was looking for
Dr Wu, aren't they testing where you live in PA?
At any rate, I'm really glad I found this site!!!
My friend had flowmasters on his 4.6 gt mustang and I had flows on my 87 gt before I sold it and I thought they were too raspy sounding,but I guess its just a matter of tasteDHFB said:Your stock exhuast is not exactley 2 1/4 all the way through. Right before the mufflers it drops to 1.9" delivery plus the stock sound is weak. You will pick up no less than 22 RWHP from any catback on a 03 Cobra but I gaurantee your now going to struggle with which one for which sound you are looking for. I have had over 15 mustangs and love the sound of the two chamber flowmaster but you may want the pop of the magnaflow or the borla. Mustangexhaust.com is a great reference for sound but find some cars and hear it first hand. Don't worry about the stainless part; Ford uses 400 less grade SS and it will develop surface rust just like treated alum. I have a few friends that tried the Borla and absolutley hated the combo (complained it was to loud and droned out plus they lost RWT).
03yellowvenom said:Theres no way borlas are restricting the exhaust flow,dynos tell it like it is .True, restriction will cause more boost but so will a CAI .When I put borla stingers on mine,the power was like night and day.I also got more boost but that was with a CAI .you'll know too when you change your exhaust and you will ,its just a matter of time
Uncle Meat said:...You will see an increase in performance from this because the stock mufflers are pretty restrictive. You'll see a much greater increase if you replace the whole cat-back with full 2.5 inch tubing....
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