1999 mustang GT

artemes · Aug 23, 2008

First off, this is a great forum! Ok down to business. What kind of numbers should i be getting in the 1/4 mile with a bone stock 99 GT? I have looked up the specs and it says 14.1 sec. I have changed out the gears in mine to 4.10, and added a live wire tuner. Otherwise it is bone stock. i am running right around 14.9 to 15.1 sec in the 1/4. i am using the 91 octane tune that is pre loaded in the livewire. I did not get a custom tune with the tuner. I would love any input on this, as i dont think i am running as fast as i should. If anyone has exp with the livewire i would love some feedback on what settings i should be using. Oh yeah it is an auto not a 5 speed.

Thanks

Art

96SCstang · Aug 23, 2008

your times look about right. i have a 96gt and when i first got it it was bone stock and i ran a 15.2. it is a convertable but still. our cars are dogs bone stock. throw on the basic add ons like pullies, CAI, exhaust, throttle body and plenum and you will see some good improvments. i also belive that 99 is still the npi setup. correct me if i am wrong guys but if you want an easy 40 to 50 rwhp do a pi swap with the heads, cams, and intake.

artemes · Aug 23, 2008

99 is the first PI year

Ryan441 · Aug 23, 2008

my 97 ran 14.6 stock even with the auto the extra hp should atleast make up the diff. how many miles are on the car. maybe you tranny is shot

02nightmaregt · Aug 23, 2008

99 is the PI. You should be in the high 13's with the 4.10's alone. Mine bone stock i ran a 14.0. The tune probably on helped out like 2-3 hp sine you have no other mods. Have you tried messing with you shift firmness/pressure with the livewire?

artemes · Aug 23, 2008

My shift pressures have been raised, my shift points have been moved up to 6200rpm, my WOT timing has been raised to 26deg. Running with the tracloc off, and stalling to 1500rpm on the line, best time i have come up with is 14.86 at 92.81mph. RT of .275, 60' of 2.267. I just figured it would run a little faster than that. But the engine is high mileage 180,000 and still running stock street tires. Still fumbling around with the livewire, havent got in touch with someone that really knows how to tweak the settings yet. Anyway thanks for the responses so far!

Art

Black_02_GT · Aug 23, 2008

something is wrong with that mph... that's very very low compared to the time... when i first went to the track i was running 14.9-15.0ish and that was still in the high 90s...

Mustang5L5 · Aug 23, 2008

Have you done a tune up?? It is a 9-year old car. Things like plugs, fuel filter, etc do make a difference in allowing the car to achieve it's factory HP rating.

It should be faster than that. When i first bought my '03 i went to the track. I found a guy with a stock '02 automatic and he was turning in 14.2's all day long stock. I went 14.1 with my 5-spd

BurningRubber · Aug 23, 2008

x2 on your MPH being low.

Should be 96-99mph range.

speed545 · Aug 24, 2008

Mustang5L5 said:
Have you done a tune up?? It is a 9-year old car. Things like plugs, fuel filter, etc do make a difference in allowing the car to achieve it's factory HP rating.

It should be faster than that. When i first bought my '03 i went to the track. I found a guy with a stock '02 automatic and he was turning in 14.2's all day long stock. I went 14.1 with my 5-spd

+1 on the regular tune up.

I ran consistant 13.7x with my 01 auto with 4.10, exhaust, hypertech and CAI. Nothing else.

Trap speed around 101-102

Cobra123089 · Aug 24, 2008

what track are you running at?

artemes · Aug 25, 2008

Running at a track in Great Bend Kansas. Not sure on altitude. New air cleaner, all coils checked, new plugs, new fuel filter. Basic tune up done when i bought the car about a month ago.

Thanks again for all the input!

Art

RedDaemon · Aug 25, 2008

did you try seafoam?

Cobra123089 · Aug 25, 2008

seafoam is awesome!!!! When I had my gti i gained 1 lb of boost after a half can through the intake mani.

Mikie · Aug 25, 2008

artemes said:
Running at a track in Great Bend Kansas. Not sure on altitude. New air cleaner, all coils checked, new plugs, new fuel filter. Basic tune up done when i bought the car about a month ago.

Thanks again for all the input!

Art

The altitude makes all the difference in the world. High alt accompanied by the automatic tranny = subpar times to near sealevel guys.

RedDaemon · Aug 25, 2008

make up for this difference by slapping on a turbo/sc

fudleyd · Aug 25, 2008

Mikie said:
The altitude makes all the difference in the world. High alt accompanied by the automatic tranny = subpar times to near sealevel guys.

Altitude is a killer, especially N/A. Trust me...

artemes · Aug 25, 2008

Ok i am at 1975 above sea lvl. I would guess that is bad lol.

MyBloodRunsBlue · Aug 25, 2008

haha that may be a bad thing lol....that a pretty good amount above sea-lvl which will cause decent times but not the greatest...go somewhere else that is closer to sea level and your times should get significantly better

1999 mustang GT

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