A stock Eaton, will put out about 14lbs. of boost maybe 15. If you want more from an Eaton, you'll have to port it to get more boost. If you really want to create more boost, I would swap it out for a Whipple Charger. And I didn't say Kenne Bell, I know to many people who went with Kenne Bell and today they regret it. Too much down time, with a Kenne Bell a Whipple Charger's the way to go if you want to make a lot of boost, Mike. SCT Tuner.
With a Posi Race Port, 2.76 upper/4lb lower, 17-18 MAX.
The rotors will only spin to a certain rpm with the snout gearing!
Steg has a new Stage V++ called the Snakebite with reworked internals that can get you close to 20.
For a comparison Whipples and KB's see boost in the 28 range that's why their Dyno numbers are Crazy!
A stock Eaton, will put out about 14lbs. of boost maybe 15. If you want more from an Eaton, you'll have to port it to get more boost. If you really want to create more boost, I would swap it out for a Whipple Charger. And I didn't say Kenne Bell, I know to many people who went with Kenne Bell and today they regret it. Too much down time, with a Kenne Bell a Whipple Charger's the way to go if you want to make a lot of boost, Mike. SCT Tuner.
Not to jack the thread or punk you out but i'm curious. I've heard that KB and Whipple are both built by a company called Lystom (SP)?. Internally they are the same and only the outer cse is unique to each manufacturer. Confirm or deny and explain the down time with the KB since a SC upgrade will be in my future.
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Your typical Terminator with all the usual mods Ford meant for you to do right after you left the showroom.
If you can afford it, a Twin Screw like Whipple would be the best route but then you also need supporting mods.
You can get away with a 2.76 pulley, around 15-16psi. I have a 2.80 and a 2lb lower but my Eaton is ported and I should see 14-15psi. They do generate alot of heat but it'll lower with the port. Also the port is cheaper than a Twin screw but after a Stage 1 port, you'll pretty much need the supporting mods too, as in BAP or GT pumps, 60lb injectors and MAFIA or SCT MAF.
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1995 Mustang GT-Heavily Modded-Sold 2003 Ford Lightning-Sold 1997 Saleen-5.4 conversion-Sold 2005 Mustang GT-Torch Red-Sold 2003 Mustang Cobra-Oxford White 2003 4Runner V8 Sport Edition 4X4
2003 Mustang Cobra, How much boost can i get out of my eaton 
