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Hi, I searched allot on this and found some mixed results. I don't drive the cobra much anymore (maybe 3-4 days a month), and it makes a tapping noise with rpm. It goes away when warm (most of the time at least). I heard it on a video with other threads and I have heard these following...

Figured I would post here being I still have my cobra (and not in e55 forums yet). I was fortunate enough to keep the cobra at least for a little while, even with the 06 e55 amg. 1000hp between the two cars, at least until I have to sell the cobra :) Garage is looking sweet. So first week in...

Restore project. Needs interior but all the parts are there. straight panels with 1 dent on drivers side. Primered black. Original wheels plus cragar 390s with BFG tires. Wheels/Tires are in GREAT condition. Mach 1 hood and original hood. Center console, refurb dashpad, front and rear...

Well after 10 years I may have to sell it..arghh. I heard a knock tick metal slap from motor area on a hot day. Temp gauge was 34 in normal range. The noise was very concerning...Water and oil levels are good. After it was off and cooled down, it started and did not make the noise (...

Hi, I changed plugs and used the same plug/gap I have used to 70K miles. Now, under 3500 or under load it hesitates/stutters and those moves on through the rpms. not sure what else could have changed. I may restart the computer (disconnect batt for minutes). Or next week take plugs...

Hi, So, 72k miles and leaking. Should I: 1. Buy new ford radiator? 550 bucks? plus install. 2. Buy LFP off ebay 420 delivered? much improve vs stock? 3. Repair mine, if minor issue/possible. I thought for sure there would be an oem replacement for 200 bucks, no? I NEVER...

Well, after 70k miles and no motor/tranny issues. Today, got in and hear a knock from near inside dash area ? Maybe? Is knocking even when in neutral and no clutch. seems to go away at higher rpm. MORE shaking and knocking at lower rpms under load. Thinking maybe valves? rockers? Hope...

Hi, I figured with all the people upgrading their Heat exchangers, there must be several stock ones laying around. Well, turns out mine may be bad after 60K miles. It never overheated or gave me any trouble..soooo...if I decide to save some cash and NOT upgrade to the LFP, how much would...

Hi, Any opinions are welcome. I will try and keep it short. 1. For the last 6 months or so it seems when I go between 50-70MPH I get a vibe running through the entire car. it becomes a more violent shaking of the car if I precede over 85+MPH. I would feel as the car would start to fall...

Hi, Well, finally 7 years in they want me to smog. Here's my short (hopefully) story. I believe my o2 sensors have been shot for some time. the check engine lights been on for years, no ill affects, it runs great. I have stock cats and all only cat back (mufflers). I should be...

Hi, Buddy has a 1st gen fox body. Stock suspension and all. He has 17x9 wheels, Can he fit 285 nitto 555r tires or should he stick with 275 ? I know 315 won't fit right? Even though they fit on my 03 cobra with stock 17x9 setup.. hmmmm Any thoughts? thanks from him :)

My clutch has been chattering for some time. No biggy but now it has trouble getting into gears/shifting. I liked the stock one. How much should it cost to do the job. Clutch, flywheel resaurface, tob, etc.. I just don't want to get ripped off. I am figuring about 800-1000 dolllars...

Has anyone put in 273 gears in the rear end? 300.00 mod and pretty sure my MPG should go from 20-21MPG HWY to 24-25MPG HWY. 25MPG with 500+ HP = Unheard of, at least by me or anyone i know, or anyone they know. Plus with a whipple, you may get 24MPG with close to 700 BHP. Obviously...

Opinions on SoCal? With 10% unemployement things much be cheaper the weather should be the same!

Well, it has been a lil while and this is back. Most say that HHO systems do NOT work. here is a link for a Mustang GT with a water cell-HHO system. He claims he gets 32MPG on his GT (Usually I would expect maybe 16-20 tops). 1993 MUSTANG GT "HYBRID" CONVERTIBLE let me know what ya...

Has anyone put this water/hydrogen separator (electricity separates Hydrogen frmo water and then injects in through like the intake? Burns cleaner and less loss of power through the engine. I have seen kits for any car. Supposed to dang near double MPG. Imagine 500+ HP and 40MPG HWY MPG...

Hi All, Guess it's no secret that the sound of the GT500 in Knight Rider is.....A Terminator. Yes.. A terminator. It's a 2003 Cobra with a 2.75 RR upper and a Mac 3" cat-back. Sounds pretty good I'd say. Good s/c whine. -Cobra101

anyone know how these are? I think I will gap them at .034 or so, sound right? i have autoilite ar103 plugs installed for a long time and like em. But I have a set of APP103 plugs that I am going to install tomorrow. I think they will do just fine, any experience with them? -cobra101

Hi. So here it goes. Any help is appreciated. for the last month or so my engine seems to lose power interminently. all of a sudden it will not go anywhere. it can maintain its own speed but no acceleration. It is like it is missing or something...but then like 10 seconds later it is...

My buddy has a 06 z06 and just got a dyno tune. his tuner said it is a very safe tune but his air-fuel is 12.2:1 I thought under 12:1 is safe (like 11.8 or so). Is 12.2 safe? thanks for any info...

So starting today. I get a heavy clicking noise soemtimes while in gear and driving. almost like it is not fully engaged in gear. Doesnt happen all the time (yet). But when it happens It is a loud clicking and I am best to just put it in neutral (noise goes away), I pull over freak a minute...

Last week it was real hot, 114 degrees. My boost gage needle went from sitting near the "0" to sitting way lowere like the 9 o'clock position. It still works and seems accurate when it is in boost (pegs needle when full boost). Now, it is interminent. Some days it works and somedays it...

I got my car back from ford. they fixed the rear diff leak again. Just resealed, refilled and new cover. Well, I picked it up and now there is a new noise I never heard before. It is like a light scuffing. It seems to get faster with increase speed. With the windows up it seems like it...

Does anyone have the Ford part number for "TA31 Diesel sealant" I need the ford part number asap. Thanks for any help.

I have been hearing that the rear differential leak is caused by heat from the aftermarket catbacks (sitting closer to diff.) Please take the poll and let's see if this is the case.