personally, i would not turbo or NOS the 3 or 6. it is not worth it to me. I would just go with a CAI and catback exhaust. on the 3 i think the stock exhaust pipe size is either 2 or 2.25" i would increase that to a 2.5" pipe, make sure it is mandrel bent or use u-bends so you have the same amount of volume all the way through the pipe. alot of places will use crush bends, basically smashing the pipe at the bend, and reducing the amount of air space by up the50%, creating more back pressure, sometimes more than stock.

 

Thanks everybody for your help, its just that i hang around a lot of people that have and i really get caught up in the excitement and act like i got something, but there are four people that i really want to beat, and im just trying to find out what i would need to keep up if not beat them, and all i know about them is this; first there is my friend Sonic has red civic hatchback with a B16 engine, Pual with a dark blue supercharged civic, matt with a black 03 supercharged mustang, and and my good friend charles with a 95 gray primer twin turboed skyline engine 240sx. if anybody knows what i would need for my 3 (list parts that are not available yet anyways) to keep up i would like 2 know.

 

there really is not much you can do as of now to increase your hp/torque in the 3. really, the only one you would have a chance keeping up with is the hoda civic hatchback w/b16 engine. those engines produce 160hp, the 3i w/2.0L is 148, add a CAI and exhaust and you should have hime beat.

 

see for one thing i got a 2.3L, and th other thing is thats all i know that they have in there but i know its more... alot more, Sonic wont pop his hood so nobody not even his parents knows what he has under there, Paul's third gear mysteriously blew the day he bought it, charles has not been seen for about a week and matt is on the run from the cops and has yet to be heard from.

 

with the 2.3L you should be pushing 160hp, enough to match the stock b16 engine in the Honda. You gotta find out what he has going on under the hood to see what you need to do to try and match him, or buy the 6 with the 3.0L v6, that should do it.

 

Blowing his third gear sounds like your buddy is hosing his Civic (Nitrous). He was most likely on the juice when he made the shift (something you do not want to do).

Start with Cold Air intake and get a high-flow cat & exhaust. If that doesn't do it, best bang for the buck will be a ~40hp Nitrous system. That would get you in the 200hp range. Also keep in mind that the Civic weighs less than the 3 (I believe).

Your not going to even come close to your friends with the Mustang and 240 twin turbo. Don't waste your money trying.

It's easier to get more power out of older vehicles due to their less complex computers. It's fairly straightforward to reflash & tune a vehicle 10 yrs or older. Basically, when OBD II came into effect, the ECM's became much harder to modify. Mazda computers actually "learn" around any tuning tweaks you make to the fuel map, so without completely changing out the Control Module (definitely not recommended for the beginner), any tuning you do won't work for long.

If you want a truly fast car (which I suspect your parents don't want you to have), you need to get something else.

Oh yeah, don't street race and you won't have trouble with the cops. Keep it on the track. (There are track event days out there.) If someone gets killed while you are racing them, you will be charged with Reckless Endangerment and possible Vehicular Manslaughter. The second being a felony punishable by prison time. It's not worth the risk.

 

well put, i agree with your last post sstlaure. for your sake tracker, dont try and keep up with something you know you cant, go with the intake/exhaust set-up, maybe NOS, that is not something i would use because it is a pretty unstable substance, especially in AZ with the heat that can get to it, I have heard of peoples tanks exploding cause the inside car temps were well over 100 degrees. And yes, the Honda Civic is lighter than the 3 since it is a 2 door car, it is a little smaller I believe. Also, its not just about hp to win races, torque has alot to do with it, you maybe able to pull along side someone, but if there car has more torque they are going to be able to pull on you.

 

For example: 03 SVT Cobra is rated at ~390 hp. I've seen wheel hp numbers of 385 hp stock, so it's really more around 430 hp at the engine. (90% efficiency estimate) I believe they are around 3600 lbs. It's easier to talk engine hp so you don't have to take into account losses, so we'll go with that...

3600lb/430hp = 8.37 lb/hp

Stock a Mazda3 is around 2800-2900, I'll give the benefit of the doubt and say 2800lb and is rated at 160hp

2800lb/160hp = 17.5 lb/hp
2800lb/8.37 lb/hp = 334.5 hp

To have the same power to weight ratio as the Cobra, you'd need in the neighborhood of 335hp.

As the Mazda3 is front drive, you'd probably need even more to compensate for the weight shift off of the front wheels at launch (The Mustang gets help off the line as the weight is pushed onto the rear (drive) wheels.)

About the widest tire you'll fit without issues is a 225/45R17 or 225/40R18, whereas the Cobra is sporting either 275mm or 295mm rear width tires. That's a full 2" of additional rubber in contact with the road (30%) More tire = more traction, more traction = faster launch.

You'd blow the stock transmission at ~260-270 hp, but a Lentech trans can solve that ($5000), you'd have to both upgrade your engine's internals ($3000), then go with a pretty stout turbo system ($4000), then add a fuel system that can feed it ($1000 braided lines ain't cheap), then a full ECM to program it all ($3000), a better cooling system to keep that sucker from overheating $1500 (it's a lot harder to cool down 350hp than 160hp), a Limited Slip Differential so that you don't put down the 1 wheel peel ($2000)......Get the point.

That's $19.5K in obvious upgrades, the details/misc. BS will add probably another 20% to that....Over $23K......

I paid $14,900 for my whole car out the door.

You'd smoke the hell out of that Civic though....

 

The Civic had already had its 3rd gear blown, it has no nitro, Pual had bought it from the owner of Polk audio, (and get this he only 17 yrs. old, he dosent live in a rich neighborhood either, but he does live next to Cal Ripkens mom, and he bought the car with his own money, this is his second car), anyway i think his civic might be a little heavier due to fact that he has a bodykit, 3 batteries, 4 12in. Polk subwoofers, 6 250watt amps all in custom trunk, a TV in the center dash, and 2 6in. subs on the side of each door. And if ya care his first car was a 95 Tiboron with $40,000 of stuff in there that he also bought himself.

 

I race against all cars i dont care what it is, its because i love to race, but im not stupid on where i race, but again id race F1 even i had a Geo Metro with 2 donut tires (the outcome is obvious...id win) but seriously i live in ****in Maryland the most boring place ive ever been to but the weather is fairly nice, i appreciate the warnings but i know what im dealing with, when we have our street races oops i mean car meets we do it at closed locations, with no neighborhoods around so as not to disturb and race from night to morning, but get away with racing on the highway.