98 gt seeking more power
 

hey guys new to the site. i need some advice on some cheap upgrades for my 98gt. its bone stock with a automatic. i was thinking about a bbk throttle body and plenum.also a cold air intake.and underdrive pulleys.also looking at exhaust x-pipe with magnaflow cat back.are any of these mods not worth it? and do i need to do anything with the computer? any help would be great.

Re: 98 gt seeking more power
 

I would do the PI heads, cam, and intake swap. This not only gives you the difference between the '98 and '99+ but also a little extra power due to a slight compression bump. All the other mods you mentioned are worth a few hp here and there except the CAI, but they're not going to add up to the same power as the PI swap for about the same money. Also, any intake and exhaust mods will give you more gain with the better flowing PI stuff.

Re: 98 gt seeking more power
 

thanks blue00gt what kind of cost am i looking at with the pi head swap? Is it a difficult mod or not? am not very good at working on cars.

Re: 98 gt seeking more power
 

I would suggest a gear swap first and foremost. Best bang for the buck, ask anyone. The PI swap can be done for around $700-900. Depending on where you get the parts from. You will need to atleast reflash the computer to get the most from the swap. You could also get a chip and get a good tune on it, and gain even more. After that, I would go with the pullies, CAI, upper plenum and TB, then the Exhaust. Don't forget to get a new MAS. If you go with a C&L meter, you can also get the true flow intake elbow, and that will take the place of your CAI. There are many, many, many ways to go. First decide what you want to accomplish with the car, and then decide which direction would be best. Gear first though.

Later.

Re: 98 gt seeking more power
 

i was really wondering about the throttle body and plenum. also the cold air intake. i need to know if these mods are worth it or not. also what about some tranny work a shift kit or something? what size gears?

Re: 98 gt seeking more power
 

The upper plenum is worth it, so is the TB. With or without the CAI, but better with the CAI. A shift kit is also a plus. I assume you have an AODE, if so, you may be better off just flashing the computer to firm up the shifts, rather than actually changing the valve body....(not an Automatic guy, so really ask someone else)

With an Auto equiped car, go with 4.10 gears and be done with it. You'll love'em.

Re: 98 gt seeking more power
 

thanks for the info i really like the idea of gears. my next question is do i go with a x-pipe with cats or without? its alot cheaper with out. is it going to be louder with no cats? how are the magnaflow kits?

Re: 98 gt seeking more power
 

As far as the cats go...check your local emissions laws and make a decision that way. Without cats it will be louder.

Re: 98 gt seeking more power
 

Since you have an automatic, 4:10's are suggested...by all means...the best bang for the buck.

Re: 98 gt seeking more power
 

I've always heard, 3.73's for manuals, 4.10's for autos for most applications. I got 3.73's still in the box, just looking for a reputable shop for the install. Every bolt-on i've ever done has been a noticeable increase except the aluminum ds...couldn't really tell diff. good luck man

Re: 98 gt seeking more power
 

Where you located?

Re: 98 gt seeking more power
 

10 miles west of las vegas strip...no one wants to do the install for me.

Re: 98 gt seeking more power
 

Too bad you don't live near the east coast, plenty of gearheads over here to do the job...probably for BEER!

Re: 98 gt seeking more power
 

There is a shop in Utah that will do the install for you fairly cheap. It's www.modularmadnesswest.com Ask for Heath, and tell him John sent you. He'll hook you up.

Re: 98 gt seeking more power
 

bbk's pretty good even as far as there intakes, but i would consider k&n over bbk, just because it's plastic and wont heat up like the aluminum, but if your going for looks the bbk definetely looks nicer. definetely go with magnaflow exhaust (magnapax) and magnaflow xpipe.

Re: 98 gt seeking more power
 

as far as the tranny goes i'd definetely get a shift kit, it will cost you some money and if you do it yourself is a mess but definetely is a noticable difference.

Re: 98 gt seeking more power
 

i have a k&n filter in it shoud i buy the intake kit or just not worry about it? as far as the exhaust i was thinking about the x wcats and just replacing the mufflers insted of the whole kit trying to keep cost down? i am going to order 4:10 gears soon

Re: 98 gt seeking more power
 

Sounds good to me.

Re: 98 gt seeking more power
 

i would buy the whole intake kit from k&n it costs a little over 300 i think but is totally worth it. i have borla on my car and it does sound really nice. also you really may want to reconsider 4:10's for 3:73's. but it's up to you.

Re: 98 gt seeking more power
 

I would go 4:30 gears, don't waste time with 3:73's with an auto, Full exhaust ( X-Pipe ), 99 up intake with the Upper plenum elbow and T/B. Do the PI cam swap after that or the full head swap. The CAI will not be worth talking about power wise but looks good. Also, do the "J" mod on the tranny. It's free and is way better then the shift kit. Do it yourself, you need to learn sometime, we all did!! That's the fun part of modding your car. Only part you can't do yourself is the gears.

Good luck!

Re: 98 gt seeking more power
 

whats the "j" mod and how do you do it? i put magnaflow x-pipe wcats on and magnaflow cat back (magnapack) nice sound i think its a little loud but most people say its not . i also put a cai on and my 4:10 gears in not much difference

Re: 98 gt seeking more power
 

Hi.It's too bad you didnt buy a superchips micro tuner.I got mine new for $250 on ebay.96 to 03 mustangs.part #1725.it makes your speedo dead on with up to 456 gears.firmer shifts,adjustable shift points.adjustable fan turn on 160, 180 and stock.you can read codes for check engine light and clear the codes.they give you a pamphlet to tell you all the codes.and oh yea it gives you a 10 hsp boost..performance mode,or you can stay with the 87 octane mode.as far as my best mod..75hsp shot of nitrous.it comes with bigger jets for more hsp but then you have to back off the timing.75hsp you dont have to play with the timing.just check your plugs to make sure your not lean.three hours to put in.$400 for the kit.

Re: 98 gt seeking more power
 

that sucks because i asked the guy at the spedo shop if i could use a tuner to fix the spedo and he said not for a 98 auto. i still think iam going to buy a tuner to help with the shifts.