Where's the dyno sheet? I thought u getting it redyno today??? Would like to see the hp/tq and a/f ratio. thanks.

 

I said in the morning lol, I didn't say today. I have an appointment for 8am Thursday.

 

I want to see worse than you what it'll do on a diffrent dyno 20 degrees cooler.

 

Speed Density is a tuning paradigm based on a MAP (Manifold Air Pressure) sensor and the other engine sensors combined input to arrive at predicted input of air to mix with the fuel to give you an optimized Volumetric Efficiency and Air-Fuel Ratio. The stock ECU derives similar information based on the MAF (Mass Air Flow) sensor and is perfectly adequate for airflow at ambient pressures and vacuum pressures but is inaccurate under boost due to a lack sensing range (the sensor 'tops out'). To predict airflow under boost the stock ECU is set with 'best-guess' numbers for the boost phase of power. With the predictability of supercharger performance this is usually adequate but could be insufficient in environments that are less than ideal. Excessive load, heat, lack of humidity, decreased coolant efficiency, knock sensor malfunction, etc. You have very little 'margin for error' with the stock ECU and predicated numbers. The more info, the safer the set-up. Redundancy in systems monitoring is essential to longevity in your engine.

'Nuff said?

 

The UTEC system (and others) has an input for a MAP and uses this data (rather than guessing) to operate off a 'map' to adjust spark timing and fuel flow (pulse width-modulation) to give optimal Volumetric Efficiency (i.e. POWER) for any given circumstance of load, temp, throttle position, rpm, etc. These piggy-back, or 'interceptor' systems let the stock ECU govern engine management under conditions of ambient pressure or less but give an altered response during boost and give an optimal mix of power, driveability and safety when properly tuned.

Hope that helps, it is just MHO

 

Thanks for the info, Lady Jax. I was also talking with my neighbor about this. He's getting a Utec for his Vortech tuner kit. Problem is there's no one around here to tune it. Is the vacuum/boost line on the SS box going to a MAP sensor?

 

The SS box has MAP sensor inside the box . There is a vacuum tube that runs from it to the plenum or other vacuum/ boost source

 

Booger, where do you get the software to tune the SS box? I couldn't find it on the Vortech or the SS websites.

 

If he's getting a Utec you take the SS box out and throw it away.

 

PM sent

 

Received and replied.
Thanks Booger.

 

I don't understand. He's getting a tuner kit. It doesn't come with any fuel/ignition support. He wants a Utec. I'm not using the SS box right now, but I'm not going to throw it away. I may need it later.

 

doesn't SGP tune UTEC's?

 

A couple of people have had a few problems with them and some bad threads were started about them . They dont come to this site anymore [ that Ive seen ] to defend them selves . So people think they are a bad shop . I totally disagree , I think they went thru some growing pains . But you know how it goes around here .

 

I wouldn't trust them. They have reputation for doing sloppy work. There's no excuse for that.

 

My neighbor said he's either going to SGP or all the way to Forged.

 

well you said tuner kit but then you started talking about the SS box. If he's getting a tuner kit and your not using the SS box I don't even know why your talking about it. I see you took it out. You should never put it back in.

 

If your running the stock Vortech blower , the SS box is a very effective piggyback . There are very few problems with it [ unlike the Greddy EM ] The resolution [ every 500rpm ] is not good , but the thing works good and is simple to tune . Im still running it with the T-trim and havent blown my motor . Granted I cant get the WHP out of it thats possible because it only goes to 16psi . But it works and people spend money on other EMS's thats really not needed IMPO when they have the stock kit . If your running 11psi or less...the ss box is plenty good enough .

 

I agree it's a little better than the EM Blue just becuase it controls timing. It's effective when it works. A local domestic shop did 6 vortech installs on Z/G's. 5 out of the 6 SS box's had to be sent back. For people that don't plan to upgrade and plan to stay within the base parameters it should work fine.

 

I probably won't. People have been boosting cars since the 1890s. Most of that time with carbs and no electronic controls at all except a distributor. Y'all are just tooo nervous. Take a chill pill.