Alfa Romeo SC @ CPT

Corr Performance Tuning
Milano 3liter, SC
PWR water to air IC
RC 550cc
Haltech E6x
AutoX car

Category:

Autos & Vehicles

Tags:

• Alfa
• Romeo
• Dyno
• Dynamics
• Milano
• Supercharger
• Haltech
• E6x

[Xeneize05]

He is also going to be adding a better exhaust system to the car. The one that he had on was a tad bit restrictive up top, but as the owner told me he is not worried much about top end since he never even sees 4th gear in a AutoX.

Well he will be back to the dyno down the road to see what it does with the new exhaust system. Its a big improvement from how the car came to the shop in the beginning.

[lancoston]

the wheels must not be so big, you lose speed, etc.

[snwbrdr5656]

what class do you race in?

[stupidbuthey]

@edtheved2

Yes, it's an American 75, here we call it a Milano.

That car is a Milano Verde (3.0)

Same thin as 3.0 America

[rovy4545]

italian!!

[CaptWSims]

Have refined the tune, changed the exhaust system, and repositioned the throttle body to be in front of the supercharger. Most recent dyno test was 333 whp on a Mustang dyno at 5900 rpm. That should translate to about 400 crank hp.

[ekecristo]

this is alfa romeo 75 3.0 v6

[edtheved2]

American Alfa Romeo 75??

[CaptWSims]

Dynoed again last week after replacing the "No Brand" Summit Racing glass packs with a set of Thrush Magnum glass packs. Made immediate difference--got 251 hp at wheels on Dyno Dynamics. That equates to 295 hp on a Dyno-Jet dyno. Is exactly what I expected at 7.0 psi. Peak torque was 228, and was very flat from 3800 to 5800 rpm.

[CaptWSims]

That post was by Alberto of Corr Performance--great guy. He told me that his dyno, a Dyno Dynamics, shows honest wheel hp that is on avg 15% below Dyna-Jets. His dyno puts on a eddy current load. Dyna-Jets compute off inertia. Alberto usually tunes while his brother runs dyno, and his brother was out of town for these runs. I told him that was fine--I'd tune and he'd run dyno. His brother says the ramp rate wasn't right, and that may have been the missing ponies.

[CaptWSims]

No, didn't quite make 250. When it came back for a 2nd dyno session it did see 1 run at 246, and another at 235. Were not able to duplicate--power went flat at about 5K rpm and 219 hp, indicating restrictive mufflers. Running headers into glass packs, but found out they are very loud and very restrictive.