Possible to take an 04 too 500rwhp w/o new super?

[OregonMustang]

Hi all ....

I was wondering if anyone has thier 03-04 cobra up around 500rwhp w/o a super.....and with out nito hit. Is it possible? I heard some guy talking about it...and I was kinda scratching my head....

Tune +24
Exhaust +24
CAI +12
Throtle body +5 ???

x factor (pully swap)
-------------------------
+65 or like close to 450rwhp total right? Where is the extra 50rwhp comming from a smaller pully?

What else am I missing? and are those pretty realistic?

Eric

 

[sawman70]

Port the factory charger, add injectors and two focus pumps and your good for over 500 at the wheels. Seen it in person.

 

[Uncle Meat]

Yup... Just send your stock TB/Inlet/Supercharger to Stiegemier for a port job which reportedly is worth an average 50RWHP on the pullied cars.

U.M.

 

[95GTS]

Yup... Just send your stock TB/Inlet/Supercharger to Stiegemier for a port job which reportedly is worth an average 50RWHP on the pullied cars.

U.M.

What UM said. I recently had my supercharger ported by Steig (TB and inlet still stock) and gained 40rwhp at the peak. My lower rpm hp/tq went down a bit due to the increased effeciency of the blower. I peaked at 480rwhp SAE but I'm also in California with crappy 91 octane so my tune is very conservative. Any place with 93 octane and a good tune, 500rwhp is definitely possible. The only change between the before and after was the Stieg port and here are the results:

[/IMG]

I'm now running the 2.8 pulley to make up for some of that low end loss. Top end was the same between the 2.8 and 2.93. Here is a dyno (different dyno shop with normally lower numbers) between the ported 2.8 and stock 2.93:

 

[missouri_guy197]

Stieg's blowers


He sure is a crazy mofo though...his shop is here in St Louis...He can port some mean heads...