Thinking about getting a '03 Cobra

tjm73 · Dec 3, 2004

What mods would I need to have at least 400 rwhp on pump gas? An easy number to hit so it seems.

I think a cat-back, pulley (what size?), MAF (best brand? size?) will get me close since it's about 350ish stone stock.

Thanks.

sawman70 · Dec 3, 2004

Put on a little pulley and tune it. You'll have over 400 for about $700.

20th turbo · Dec 3, 2004

Drop in K&N and welded in Magnapacks got me 411rwhp/384rwtq sae corrected. I think it will depend on the car, some run harder than others.

Tat98Cobra · Dec 3, 2004

all you need is an k&N and exhaust and you're over the 400rwhp number.

peace

Dr. Wu 2000 · Dec 3, 2004

Like everyone else said, don't worry about the pulley swap if all you are looking for is 400rwhp. Simple CAI and exhaust should do the trick or be very close to it.

Darkhorse845 · Dec 4, 2004

Do the pulley and a tune and your set!

sawman70 · Dec 4, 2004

The pulley should be the first thing you do. A filter and exhaust are good mods but do not and I mean do not make the difference the pulley does.

$700 and you'll have 500+ at the crank. It's that simple.

03 Dark Shadow Grey
455rwhp 483rwtq

sawman70 · Dec 4, 2004

sawman70 said:
The pulley should be the first thing you do. A filter and exhaust are good mods but do not and I mean do not make the difference the pulley does.

$700 and you'll have 500+ at the crank. It's that simple.

03 Dark Shadow Grey
455rwhp 483rwtq

Before any one starts crying foul about the warranty. The motor is the only warranty you will void and it can handle the power anyway. Just do not beat the snot out of it every second.

MMFF continuosly states the motor can handle 800hp.

A guy by me has 618rwhp and 575 rwtq, races constantly at the track, has showroom driveability and no internal engine mods.

but, if it scares you, do the exhaust, the intake tube/filter and a superchips flash (it can be removed without dealer seeing evidence)

64Comet · Dec 4, 2004

sawman70 said:
Before any one starts crying foul about the warranty. The motor is the only warranty you will void and it can handle the power anyway. Just do not beat the snot out of it every second.

MMFF continuosly states the motor can handle 800hp.

A guy by me has 618rwhp and 575 rwtq, races constantly at the track, has showroom driveability and no internal engine mods.

but, if it scares you, do the exhaust, the intake tube/filter and a superchips flash (it can be removed without dealer seeing evidence)

There was some guy in florida last year that got 1600 hp with the stock bottom end before it came apart.

Uncle Meat · Dec 5, 2004

64Comet said:
There was some guy in florida last year that got 1600 hp with the stock bottom end before it came apart.

Details please... reason I ask is because there hasn't been a published account of anyone pushing the stock bottom end farther than 1000HP thus far. I think someone is yankin' yer chain...

U.M.

Darkhorse845 · Dec 5, 2004

64Comet said:
There was some guy in florida last year that got 1600 hp with the stock bottom end before it came apart.

Lay down the crack pipe please!

svtcobra0304 · Dec 5, 2004

simple exhaust/intake should give you 10hp at the crank you'll need. Pulley will help even more. Crank up the boost a little on the Eaton.

MystiChrome Coupe · Dec 5, 2004

If a catback & intake don't get you there, adding a X/H pipe will, IMO. That's all I have done to mine & the midpipe is a catted X. Numbers are in my sig.

Dr. Wu 2000 · Dec 6, 2004

64Comet said:
There was some guy in florida last year that got 1600 hp with the stock bottom end before it came apart.

vipergts281 · Dec 7, 2004

Yeah, but that motor is expensive.

tjm73- If warranty is a concern to you, then just go with a catback and CAI. Those mods will put you over the 400 rwhp mark. See my sig.....just Magnaflow CB and Steeda CAI, that's it.

If warranty isn't a concern , then do the above and get a smaller pulley and tune. Then you will be anywhere from 445-470 rwhp.

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