This is topic why is my car runnin slower then stock in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=005760

---

Posted by ThaTruth922 (Member # 3645) on :
 
when i ran at sears point stock in my 2003 gt i ran a 14.2 since i have added; 3:73 ford racing gears, steeda pulleys, a C&L 85mm MAF tru flow, 70mm ford racing thorttle body, bbk off-road x-pipe, flowmasters, and 255/40-17(front) and 275/40/17(rear) Flakin tires with svt chrome rims....now i ran a 14.7 at sacramento. my check engine light is on and the diagonstic machine says theres a misfire in master cylinder heads 4 and 5 but i should i be running a 14.7? or somewhere in high to mid 13's and does the misfire have a lot to do with my slow time?
 

---

Posted by 66 AC COBRA of CA PERFORMANCE (Member # 904) on :
 
yes with he miss fire i think the computer will take some timing out
plus the missfire isnt helping power

when u did the offroad pipe didu also put in mil eliminators
 

---

Posted by Black94 5.0 (Member # 655) on :
 
OBVIOULSY IF YOUR ENGINE IS MISFIRING ITS NOT GOING TO RUN 13'S!...

~What were the trap speeds?...The speed at the end of the 1/4 mile....

~Whats your 60ft times?

Get the Misfire fixed and then go back to the track...
 

---

Posted by st5150 (Member # 51) on :
 
Did you trap speed (MPH) change after you did the mods?
 

---

Posted by 1990GT50 (Member # 2119) on :
 
why did you post the same topic twice? (the topic a couple above this that says something about moving to a 14.7 and says the exact same stuff as this)
 

---

Posted by Jdub07 (Member # 2728) on :
 

quote:

---

Originally posted by 1990GT50:
why did you post the same topic twice? (the topic a couple above this that says something about moving to a 14.7 and says the exact same stuff as this)

---

Yeah no shit!! Only this one says sears point and the other one says at Sac. What a fag!
 

---

Posted by Sidewayzisbest (Member # 3403) on :
 
what the other said and also i heard on the 4.6 putting a throttle body will slow it down orless its got a but load done or a power adder
 

---