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2003 with 496rwhp. 500rwtq. Very fast and dependable. Upgrades are 2.91 steeda pulley, and metco idling pulley pushing 13 psi., K&N cold air kit, SCT Flash programmer and safely tuned for everyday driving. Mac long tubes, with Borla Stingers, Spec 3 plus clutch, maximum motorsport full...

My boost gauge is acting differently. It now sits on the 8 o'clock position and jumps up at very little boost. When I slightly hit it it goes up to like 3-8 psi very quickly and when I am in full boost it goes up to 10psi. Very weird just started doing this yesterday, but the car does run...

Just thinking of selling my 03 terminator for a 94-99 Saleen S351. Which mustang could I get more everyday reliability from and be pretty quick on the street too? - 4.6 with kene bell/ whipple on pump gas = 560-650 rwhp. - 5.7 done punched to 408 with aluminum heads and bigger vortech=...

I currently have a steeda 2.9X pulley on my car and when I had it tuned it saw 14psi with stock manifolds/ high flow cats and bassani cat back. The car made 492 rwhp,499 rwtq. I now have mac longtubes/ o/r prochamber and stingers with the same pulley and the car made 496 rwhp, 500.2 rwtq...

I have the mac longtubes/ mac prochamber with the stingers and just wondering what would be the difference if I installed the new Mac X pipe in place of the prochamber?? Would it be louder?? What kind of tone would the X pipe give over the prochamber?? Any input would be appreciated.

I just had mac longtubes installed on my 03 cobra a couple of weeks ago and am stuck with an exhaust leak. The speed shop that installed them (actually has a good reputation of doing a good job) won't admit that they messed up and won't want to do it over. They told me that they re-used the...

Just had my mac longtubes put in with the off road prochamber and borla stingers. Kind of disappointed in the sound, it is very mellow and only wakes up at around 3,500 rpms. Thinking of putting a Dr. Gas x pipe to replace the prochamber, any suggestions?? I do want it loud at idle and across...

Have two 18x9 and two 18x10 still in box brand new. Changed mind on rims and decided to keep the stock chrome 17". Paid a little more than $700.00 and willing to sell for $675.00 plus shipping. Will deliver around the RI area. Will send pics to email address.

Asking $200.00 plus shipping, only has 1,500 miles on it. Also selling the 3" Flowmaster delta flows cat back kit for cobras for $150.00 3 month old exhaust system. MAC CAT KIT IS SOLD!!!!!!!!!!!!!! STILL HAVE FLOWMASTER 3" FOR SALE. IT IS ALL IN ONE PIECE WILL NOT SHIP 3 MONTHS OLD...

My 03 cobra was tuned with 490 rwhp. 503 rwtq. with the chip/pulley/cold air intake. Couple of months later I decided to put an o/r prochamber and Flowmaster 3" cat back. From the cat-back I realized that my low end felt weak, not as responsive. And when at wot the car just hesitated and...

The flowmaster cat back with a 3" tubing. Would it be more ideal to get better flow and sound if I weld a set of 3" spintech pro street or just heck with it and buy the a used cat back Stingers. Looking for loud deep sound and most importantly better flow#. Which would flow better...

Used Bassani mufflers $80.00 plus shipping. Used Magnapacks 2 week old with a ding in one of them $100.00 plus shipping. Used bassani tip resonators with the allen head screw $20.00 plus shipping. All come in sets(2).

I have to save up for a decent exhaust and want something loud, aggressive and deep. Which one of these cat-backs would give me that with an o/r prochamber ? I currently have magnapacks welded into my bassani cat back and it is not as loud and deep as my 2"1/2 mac cat back I had on my 04 GT...

Brand new just spent $560.00 will sell for $450.00 plus shipping. Fits 99-04 cobras has 3" inch tubing with polished 4" tips. Bought it today and the f***er won't take it back so will sacrafice.

Is there anybody running these springs on their cobras?? They are part#3594.140. I got stuck with the wrong ones Part#3590.140 due to Lethal Performance and Eibach and am looking to see if the new ones are worth it. RPM Outlet is selling them for $199.00. Any feedback would be...

Have two of them both 2 months old/ 500 miles. They are 285/40/17 about 26" tall and 11.4" wide. Will sell both for $200.00 plus shipping.

I want something loud deep and aggressive. My Bassani isn't doing it for me right now. I have the mac o/r prochamber in my cobra and want to know which one will sound this way. I am more or less leaning towards the Mac only becuase it is a 3" and might be needing it when I get my KB. Which...

I just don't want any other cobra owners to go through what I went through. The eibach pro kit for our cars are not the same ones that fit the 99 Cobras. Make sure that if you order eibach pro kit springs that the part number for 03/04 terminators is # 3594.140 NOT 3590.140 as adveritsed in...

Yes, I am another disappointed customer with the 1/4" drop in the rear only. I do want to get H&R's but already spent $650.00 with springs and labor so I am not looking forward to spending that again. So I figured to work with what I have. I have two choices and need some opinions from you...

I now have a bassani cat back with the mac prochamber and am stepping up to a 3 inch exhuast. I do want it louder than the bassani but also want it to sound aggressive too. Whole idea of 3" exhust is becuase I will be needing it when I install the KB. Flowmaster 3" Delta Flow with 4" tips -...

I don't really know how many miles , it came with the car when I bought it. But it does look good especially with the 4" tips. Looking to buy a 3" cat back but cannot make up my mind if I want the macs or flows. Anyways selling the whole kit for $200.00. Will not ship. Local sale only...

Just want to know which blower would be most effiecent with the lowest IAT temp for a daily driven cobra. Looking to get at 600-650 rwhp. on pump gas all year round. All input would be appreciated. Thanks in advance.

This isn't about a road kill, I just want to know what do those 03-04 Saleens have for a motor? The one I came across tonight was really FAST and actually just as fast as my cobra. I don't know much about saleens but this was loud and had two exhaust pipes coming out from the rear center of...

I have the o/r prochamber and Bassani cat back with the 4" tips. Has anyone tried swapping mufflers like the 1 chamber race muffler from flowmaster or the Borla round race mufflers? I am looking for that loud aggressive mean sound. Thanks.

- I have the tri pod that fits 99-04 gt/cobra coupes. Brand new $50.00 - Phantom gauges all brand new all come in 2 1/16". The temperature, oil and afr gauge All gauges for $120.00. - Autometer shift light with the ford racing tach adapter for $120.00. Brand new. If someone wants...