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I was given a stock 03 4.6 intake plenum from a buddy of mine and was thinking about porting it. I tried looking for porting instructions on the web but without any luck. I am not sure what should be ported. I notice a couple of spots on the side right before the intake that I could smooth...

Ok.. I agree that I need to learn how to drive better with the 4.10 gears. I will also try pulling off the Maf and returning it back to stock with a dropin K&N filter. One of the reasons I kept all the stock parts and did not sell anything on Ebay. I may have been venting a little bit since I...

The funny thing about the maf is that about a year ago, everyone was saying that they were awesome. 15 hp guarranteed with dynos to prove it. Now everyone has changed their minds and say they are ****. I personally feel I lost something when I went from the mac full cold air to the maf but I...

Well, the chip was the first thing on and I got a 14.0 so I don't think it is the chip. I did spin more with the 4.10 gears but my 60ft did not change so how could that affect me? I don't know just did not get what I thought I would with the 4.10 gears. Before I put in the 4.10 gears, my...

I used to think modding my mustang was cool but now I think it is a waste of time and money. About a year ago when I first got my 2003 Mustang GT Vert, I thought is was pretty fast. Not Coupe fast but still pretty fast. I started catching the mod bug and before I knew it, I had a Superchip...

! Thanks for the replies. I sent emails to superchips but they said that they could not help me. They did not do the custom burns and gave me the link to superchipcustom website. I sent them an email and was told that they did not do custom burning for the blue module and that I would need...

Do you know of a place to go or send to have it reburned? I have checked here in San Antonio but noone can reburn it for a gear change. They had no problem with the standard program but don't seem to know how to reburn for the gear change. Thanks, Rich

I have found one at Brothers Performance for $84.99. Is that a good deal or is there one somewhere else for less money? Thanks, Rich

Hello, I just purchased FRPP 4.10 gears for my 2003 Mustang GT Vert. I am waiting to install them until I can get something to recalibrate my speedo after the install. What is the best/cheapest thing to do to correct the speedo? I have a Superchip module but can't find anyone to custom...

I just installed the KB Supersubs on my 03 GT. They really helped out with all the squeaks and rattles expecially since I have driven her hard at the track. I am sure that there are better subframes out there but at $69 from www.rpmoutlet.com they work great. Just my 0.02. Rich

I installed the Steeda Pulleys on my 2003 Vert and notice an increase in power. I have not had any charging problems at all. The thing that I like most about the pulleys is that I am now getting 2 mpg more in the city than I used to get. I was really happy about that. Now getting a little...

I know how you feel. I can't seem to get into the 13s either. I am ordering some KB super subs and some LCAs in hopes to get better traction so that I can get into the 13s. I think that at just under 100mph, I should at least be 13.999 but I guess I have to work on my launch since my best...

Since I don't know too much about welding, I will ask this question.. Would you use the welding with the welding rod or with a torch and welding stick? Just by that last sentence, you can tell I don't know too much. haha My brother-in-law does but I don't even know how to tell him how to...

Can you take the car to any muffler shop to have them weld in sub frames or do you have to take to a particular place? I guess I need to start calling places in San Antonio to see how much it will cost me. If it is not that much then I may not be saving myself that much money for trying to put...

I just bought some KB Super Sub Connectors for my vert and had some questions about installing them. I have a brother-in-law who is a really good welder. He wanted to know what to weld them in with so that he does not mess anything up. Can we put them on in his driveway with the car on jack...

Thanks everyone for all your replies. I think I am going to get the Nittos in the stock 245/45/17 size. Don't want to have to worry about steering problems with the bigger tire size in front and want to rotate front to back expecially since I will be doing little burnouts. Rich

I was thinking about going 275/40/17 all the way around. Hope that they will be ok in the front. That way I could still rotate the tires. I was looking at discount tire and saw that they carry a Phantom ZRX 245/45/17 tires for $50/tire. Now that is more like I would want to pay but I...

Hi all, I am starting to look at getting some new tires to replace the factory Goodyear tires on my 2003 Mustang GT Vert. Now my little brain thinks that going to a wider tire (275/40/17) that I would get more traction in dry and wet situations (as well as the track) than the original size...

Actually since posting this thread and hearing everyone else, I started wondering why I was shifting to 4th also. I wonder if that is why I can't get into the 13's because I am taking time to shift to 4th before I end. I am sure that is costing me a little bit of time. I think next time I go...

Doesn't anyone else have what the increase would be in the 1/4 mile with 3.73 vs 4.10 gears? Thanks, Rich