Need tuning info!

[ripbikes1000]

I have a 2003 GT with K&N CAI, 75mm throttle body, flowmaster catback exh, and 4:10 rear ratio. i cant run any better than 14.4. is that right? should i have had any tuning done after those minor mods? please help with any info possible

Thanks!!

 

[03ghoststang]

those numbers don't sound right is your car an Auto ar 5 speed in either case you have to recalibrate the speedo for the gear swap if you havent done that because there is not much info to go by.

 

[bham_gt]

You should be running faster than that. I ran a 14.33 with only welded in MAC's and a drop-in K&N. As already posted, a tune will recalibrate your speedometer.

 

[ripbikes1000]

havn't calibrated the speedo... does that prove the same for my rpm guage? it seems like i'm hitting my redline limiter to soon. on the track i have to shift into 4th to prevent the rev limiter from hitting in?

 

[mogs01gt]

you do not need a tune and yes that is normal to shift into 4th.

Just learn how to drive the car better.

 

[03ghoststang]

yeah for any type of gear swap you have to recalibrate your speedo when i got my 3.73's on i got the diablosport also and recalibrated everything to my 3.73 swap, my shift points and shift firmness and stuff like that

 

[ripbikes1000]

how do i go about recalibrating that stuff?

 

[mogs01gt]

you have a manual correct? You will only need to recalibrate the speedo.

 

[03ghoststang]

is your car a 5 speed or auto?

 

[forpit2000gt]

if he usedto stay in third and now has to shift to fourth, I'd say he is manual.

The times ar probably right. get some DR and practice launching on the 4.10s.

 

[streetstang03]

practice and sticky tires. whats your 60'??? take off that throttle body too.

 

[03ghoststang]

yeah they sell the speedo calibration for 5 speed's try modular power house or steeda some of those shops

 

[ripbikes1000]

Thank you all for the good info!! i'm new into all this car stuff and i apreciate all the info!! also whats a good launching technique??? yes it is a 5-speed

 

[ripbikes1000]

oh one more... why take off the throttle body(75mm)?? what should i put on?

 

[streetstang03]

TBs arent really worth it on a N/A 4.6L. a 75mm really only helps on a blown car. if you dont ever plan on going w/ forced induction, you should replace the 75mm w/ a 70mm.

 

[03ghoststang]

Thank you all for the good info!! i'm new into all this car stuff and i apreciate all the info!! also whats a good launching technique??? yes it is a 5-speed

when i would race my friends GT before i got mine i would launch his car at around 3500-4000 rpm and slip the clutch to the point where the tires would be able to break traction and it would give me good 60ft times in the 2.1-2.0

 

[streetstang03]

what tires are you running right now?? think about some Nitto drag radials for the rear

 

[03ghoststang]

what tires are you running right now?? think about some Nitto drag radials for the rear

+1 on the Nitto DR's

 

[ripbikes1000]

im gonna look into those DR's!!
thanks!