dyno'd my 97 cobra

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lang williams

New Member

Jun 11, 2003

567

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cleveland, oh

Jun 25, 2010

#1

• Jun 25, 2010

• #1

I picked up a 97 cobra last year, then last fall I picked up a used KB 1.5 for it. It has a safe custom tune, kenne bell with 5/6 lb pully, 42 lb injectors, lightning maf, jlt cai, stock TB, stock exhaust except flowmasters welded in. But down 301 HP an 279 tq. I had to run it with out much cool down time. I got there about an hour before closing. Any guess what a o/r x pipe an larger tb might do?

 

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2 cam sam

Founding Member

Apr 29, 2000

68

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6

Mabelvale Ar.

Jun 25, 2010

#2

• Jun 25, 2010

• #2

The stock cats are probably stopped up. My 97 made 282 to the wheels with a tune and a off road x-pipe.

 

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lang williams

New Member

Jun 11, 2003

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cleveland, oh

Jun 25, 2010

#3

• Jun 25, 2010

• #3

WOW, I have an o/r X in the garage but I'm waiting until after I e check it this fall to put it on. This was a mustang dyno btw. The owner was into mustangs big time an said norm they are in the 240-250 range stock.

 

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NYTMARE

Founding Member

Apr 14, 2002

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York, PA

Jun 25, 2010

#4

• Jun 25, 2010

• #4

not bad #s for a Mustang dyno and that setup....IMO, a Dynojet would yield around 330 rwhp, and those cats are def a restriction for you....throw that off-road pipe on and perhaps a larger throttle body and get a great tune, and you will def see some power gains

 

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04GTBLKVERT

New Member

May 18, 2009

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Vegas

Jun 30, 2010

#5

• Jun 30, 2010

• #5

Your stock mid pipe is killing you! I am thinking at least 40rwhp if you change mid pipe and t-body and a more aggressive tune.

 

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cronin49

Banned

Aug 12, 2003

432

1

16

SC

Jun 30, 2010

#6

• Jun 30, 2010

• #6

NYTMARE said:

not bad #s for a Mustang dyno and that setup....IMO, a Dynojet would yield around 330 rwhp, and those cats are def a restriction for you....throw that off-road pipe on and perhaps a larger throttle body and get a great tune, and you will def see some power gains

Click to expand...

Many people don't realize that in a blown car, exhaust restriction is a non-issue.
The blower will simply force the air through whatever so called resriction exists.
Please continue.

 

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lang williams

New Member

Jun 11, 2003

567

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cleveland, oh

Jun 30, 2010

#7

• Jun 30, 2010

• #7

I may get to test that. I hope to change out the stock 4 cat h pipe to the bassani o/r X pipe I have. If I do get another pull after that I'll post it up. It won't be exact since the weather will be different. It was in the mid or upper 80's the day I went.

 

millhouse

Founding Member

May 14, 2002

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Simpsonville, SC

Jul 1, 2010

#8

• Jul 1, 2010

• #8

cronin49 said:

Many people don't realize that in a blown car, exhaust restriction is a non-issue.
The blower will simply force the air through whatever so called resriction exists.
Please continue.

Click to expand...

Hogwash. Throw a potato on your exhaust pipe and see what the restriction does. If your corking the amount of air that's coming out, you'll be limiting the amount of air that is able to go in.

 

jeremy canter

Member

Dec 2, 2008

402

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17

Orange County , NY

Jul 3, 2010

#9

• Jul 3, 2010

• #9

^ yep open her up and the hp will come > do long tube's and a cat-less x-pipe and you'll smile > warning long-tubes are a B_I_T_C_H to put on a cobra

 

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lang williams

New Member

Jun 11, 2003

567

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cleveland, oh

Jul 4, 2010

#10

• Jul 4, 2010

• #10

I may put some hi flow cats on that x pipe an install it. I'll prob stick with the stock manifolds though.

 

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Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

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Jul 6, 2010

#11

• Jul 6, 2010

• #11

I think any car will benefit from greater exhaust flow.

 

EXTRPR50

Founding Member

Oct 7, 1998

370

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19

Sep 5, 2010

#12

• Sep 5, 2010

• #12

Forced induction needs to Breeeeeeathe! No or hi-flo cats, and staright thru mufflers..
Since your KB kit is not intercooled, look into meth inj. and a smaller pulley..