Do I really need a tuner with these mods?

GTR_Stang03

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Jul 29, 2003

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#1

• Apr 14, 2006

• #1

I have an 03 Mustang GT. It has a 75mm T/B & Plenum, Ford Racing Cold Air Intake, Ford Racing Ceramic Headers, and Flowmasters on my floor in boxes. Do I really need a tune when installed? I was thinking about a SCT if I need one. What if I dont tune?

What kind of gains either way?

Thank you Very Much!!

 

03ghoststang

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Jul 16, 2005

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Apr 14, 2006

#2

• Apr 14, 2006

• #2

well it does have its benefits of a bit more power but the question is are you going to do any major mods down the road but either way you should if you are

 

GTR_Stang03

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Jul 29, 2003

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#3

• Apr 14, 2006

• #3

Well, I was going to put the 5/8s fuel rails and 30# injectors, and possibly the The new alluminum intake that Performance Products just came out with. Otherwise I would like to get as much power out of my 03 GT as possible W/O No2 or SC.

 

03ghoststang

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Apr 14, 2006

#4

• Apr 14, 2006

• #4

GTR_Stang03 said:

Well, I was going to put the 5/8s fuel rails and 30# injectors, and possibly the The new alluminum intake that Performance Products just came out with. Otherwise I would like to get as much power out of my 03 GT as possible W/O No2 or SC.

Click to expand...

you are fine with the stock injectors you have unless you are putting cams or something that might require 30# injectors. But i would recommend in getting the tuner if you are doing major mods like cams since you dont want to go F/I

 

tomustang

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Apr 14, 2006

#5

• Apr 14, 2006

• #5

GTR_Stang03 said:

Well, I was going to put the 5/8s fuel rails and 30# injectors, and possibly the The new alluminum intake that Performance Products just came out with. Otherwise I would like to get as much power out of my 03 GT as possible W/O No2 or SC.

Click to expand...

well it would be a huge waste to put on bigger injectors especially when you have no power mods

 

GTR_Stang03

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#6

• Apr 14, 2006

• #6

When you use this formula for Injectors, mine are about at the end of there rope. You guys might want this? That is why I am changing them out.

Fuel injector size Formula:

Eng HP x BSFC
______________ = Inj. lb/hour

No. of Inj. x 0.8


BSFC=0.4-0.6 (0.55 is used)

 

03ghoststang

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#7

• Apr 14, 2006

• #7

well the stock injectors are good for like 300HP if i remember correctly and even then you can up grade to either 24# or 30# injectors depending on your power range but you have enough to up grade to that big of an injector. If you F/I then the kits should come with a specified injector for that application

 

GTR_Stang03

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#8

• Apr 14, 2006

• #8

From what I hear my 03 has 24's. Is this right?

I know if I use bigger injectors I will need a tuner for sure.

 

03ghoststang

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#9

• Apr 14, 2006

• #9

many people say they do other say they dont all i know is taht my 03 comes with the pink injectors and teh other years come with the orange ones

 

Crzyhrse

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Dec 23, 2004

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Apr 14, 2006

#10

• Apr 14, 2006

• #10

30# injectors is overkill. Your car is gonna run like crap and your mileage will completely suck.