What are the differences - Ford Mustang Forum
 
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post #1 of 2 (permalink) Old 07-05-2010 Thread Starter
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What are the differences

Hi, I have a Jap export 96 Mustang GT, what are the differences in the fuel system?, I have read they have 4 cats fitted to exhaust, Mine has 6?, all Mustangs have 4 o2 sensors, Mine has 2 at front & 2 cat heater probes?, I've fitted a catted Magnaflow x pipe which has caused the Check engine light to come on, I've checked for vacuum leaks (have none), checked for exhaust leaks (have none), been told to fit MIL eliminators (only 2 0s sensors), I've had the codes read which said its running a bit lean?, Im getting frustated, anybody got any ideas:?::?:


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post #2 of 2 (permalink) Old 07-05-2010
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Originally Posted by UKStangGT View Post
Hi, I have a Jap export 96 Mustang GT, what are the differences in the fuel system?, I have read they have 4 cats fitted to exhaust, Mine has 6?, all Mustangs have 4 o2 sensors, Mine has 2 at front & 2 cat heater probes?, I've fitted a catted Magnaflow x pipe which has caused the Check engine light to come on, I've checked for vacuum leaks (have none), checked for exhaust leaks (have none), been told to fit MIL eliminators (only 2 0s sensors), I've had the codes read which said its running a bit lean?, Im getting frustated, anybody got any ideas:?::?:
It might be working right and if you did other mods besides cated x-pipe it could be running VERY lean. Have the car checked as a very lean condition = engine goes boom. As you do more mods to an air pump(engine), you make it more efficient (more air in & out). You then must add fuel to the mix or it will cause a lean condition. Don't use MIL ELIMINATORS ON THE FRONT O2's as these tell the computer what the air to fuel ratio you have... But if the stock computer setting can't add enough fuel to compensate for the new parts added then the car will run lean.....(you may only need a tune added to fix it-plus you may get more mpg & hp)

ps- the California mustangs had 6 cats also... have the cars air to fuel ratio checked and @ the same time have the O2's checked as a bad one can give incorrect readings.....


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