Next mods for a 99 Cobra?

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Landmonster

New Member

Apr 12, 2009

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May 17, 2009

#1

• May 17, 2009

• #1

I recently purchased a clean 1999 Cobra, with some bolt-on modifications installed by the previous owner.

The car dynoed at 311 RWHP.

Here are the mods:

Exhaust:
BBK Chrome long-tube headers
BBK X-pipe with high-flow cats
Magnaflow 2.5" stainless catback system

Intake:
Cold air intake with K&N air filter

Drivetrain:
3.73 Ford rear-end gears
Centerforce Dual-Friction clutch kit
Short-throw shift kit

Other Performance Mods:
SCT Xcalibrator 3 programmer
Underdrive pulleys



What are the next logical upgrades? Are any of the exhaust mods worth replacing, with something better?

 

blackfang

Founding Member

Dec 17, 2001

1,290

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Richmond, Va

May 17, 2009

#2

• May 17, 2009

• #2

You should swap out the 3.73's for some 4.30's if you plan on staying NA

 

horsinaround9

New Member

May 13, 2009

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May 17, 2009

#3

• May 17, 2009

• #3

blackfang said:

You should swap out the 3.73's for some 4.30's if you plan on staying NA

Click to expand...

I will second that. I had 4.30s in my 01 when it still had the i.r.s before the blower. I loved them.

 

blackfang

Founding Member

Dec 17, 2001

1,290

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Richmond, Va

May 18, 2009

#4

• May 18, 2009

• #4

I had 4.10's in my 99 and 4.30's in my 97 and the 4.30's definitely were the way to go. I wish I went 4.56's.

 

L

Landmonster

New Member

Apr 12, 2009

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May 22, 2009

#5

• May 22, 2009

• #5

What are 4.10s and/or 4.30s going to do to my gas mileage? this car is a daily driver, and seems to get like 17-18mpg as it is.


Furthermore, what about some suspension mods?

 

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shoobs99svt

Member

Jul 31, 2006

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Charlotte NC

May 28, 2009

#6

• May 28, 2009

• #6

Landmonster said:

What are 4.10s and/or 4.30s going to do to my gas mileage? this car is a daily driver, and seems to get like 17-18mpg as it is.

Click to expand...

Bone stock I was at 18 city and 25 hwy. Now with the 4.30s and other mods, im at 16.5 mpg, but thats ALL CITY. No idea what it is on the hwy.

 

SVT32VDOHC

waiting for the next hack atta

Founding Member

Nov 22, 2001

3,501

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Motor City

Jun 1, 2009

#7

• Jun 1, 2009

• #7

From a 3.27 to a 4.10, I didn't notice gas mileage. I really don't care either since I don't DD any more my Mustangs. Even after the Vortec on my 96, I didn't notice a gas mileage change.

Your power is great right now. Next up, a hit of nitrous, or take the u/d pullies off and get a supercharger.

 

S

shoobs99svt

Member

Jul 31, 2006

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Charlotte NC

Aug 4, 2009

#8

• Aug 4, 2009

• #8

Landmonster said:

What are 4.10s and/or 4.30s going to do to my gas mileage? this car is a daily driver, and seems to get like 17-18mpg as it is.

Click to expand...

BUMP only because I finally used one full tank on the highway...

My 4.30s let me keep 16.5 city and 20.2 highway mpg's

 

T

tsacch

New Member

Jun 3, 2009

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Aug 15, 2009

#9

• Aug 15, 2009

• #9

I have the same dilemma I have a 1999 cobra vert with high flow cats and full bassani exhaust, JLT intake and SCT tune......so I want the next step but want to keep daily drivability. Let me know what you do. Changing to 3.73's or 4.10's is a logical step for me, but very expensive to have some one do it.