03 Sonic Coupe for sale

[Svts]

You know Stiegemeier! Always a new "stage" All I know is that's their latest port job. I don't think that's a low number. 100 hp over stock. My tune is pretty safe too. I think your numbers might be a bit high but what do I know. The car runs good with no driveability problems so I'm happy.

 

[fiveoh2go]

My intake, 2.76 pulley, tune, and exhaust car made 460 rwhp. I'd think almost any ported blower should be making around 500, if not more. :shrug:

 

[cobrakon]

What is the elevation where the car was dynoed? Do you have any engine bay pictures?

 

[Svts]

I am at 2600 feet elevation.

 

[cmnorman]

My intake, 2.76 pulley, tune, and exhaust car made 460 rwhp. I'd think almost any ported blower should be making around 500, if not more. :shrug:

mine with intake, pulley, exhaust and tune made 473 and most of the ported blower numbers I have seen have been at least 500 as well.

 

[2k4Terminator]

Mine with a cat back and 2.76 upper made 454.

 

[Svts]

So what is the deal with mine? I know the tune is rich but that shouldnt be 45 horsepower?

 

[cobrakon]

The higher the elevation the lower your car will dyno. Horsepower numbers can also vary depending on the dyno.

 

[1badton]

Sent text Thanks Brian

 

[markw351]

I dont know how accurate some of the calculators you find online are but I put in your horsepower and elevation and it calculated about a 36hp loss compared to sealevel. So if that is the case, at sealevel you'd be about what's expected.

 

[Svts]

Unfortunately our state law requires the front plate and they are pretty strict about it. The original owner put it on.

 

[nycarpenter]

Timing and fuel maybe a restrictive exhaust. Most will tune a ported eaton with 11.8 A/F and 20 degrees of timing on 93 octane. You should put down 480-500 but lots of variables weather dyno etc.

 

[Svts]

I think I am going to adjust the tune a bit and go from there. I like how the car runs though. I am going to make a recording of the timing and see what its doing. I am guessing its pretty safe on the timing too. I dont have any access to 93 octane gas which could be why its down on power. The tuner is set to 91 octane only.

 

[Svts]

Bump

 

[Svts]

bump

 

[R.D.P.]

What sort of dyno and correction? Makes a difference. If it was on a Mustang Dyno, your gold considering elevation and 91 oct. If it's Dynojet, you are maybe a little low, even considering 91oct and thin air.

 

[Svts]

It was a Dynojet with SAE correction. I still think it's a bit too rich. It runs very strong and I know it's not going to melt down a piston. I drove it tonight and played with my buddies bolt on 2V GT and I left him in the dust like he was sitting still.

 

[Svts]

Bump

 

[03cyborg]

Bump

PM sent thanks

 

[wreckit]

There any updates with the cobra?
If you werent so far up north i would be at your door step.