wideband install

[LETZRIDE]

Re: wideband install

damn...I just realized my VE tables only go to 6400...that sucks...where can you get that fix

and what will happen if you try to take it to 6500? will it just lean out hardcore?

[jimmysprinkle]

Re: wideband install

All of the tables stop at 6400; as far as a fix, I know of no tunerside fixes. But that shouldn't be a concern, the ARHNA cam doesn't make power that high. I'd say put your rev limiter at 6400, and set shift points at 6350 (will equate to 6400 shift RPM)

Once you get your na tune done, get a few runs at a dyno shop to see for yourself where your cam reaches the peak of its powerband.

[LETZRIDE]

Re: wideband install

it doesnt need to be making peak power that high...all it needs to do is make more power then where the shift point will take you to...I.e

1st gear
5900rpm-280
6000rpm- 290
6100rpm-280
6200rpm-270
6300rpm-260
6500rpm -250 hp


and 2nd gear is

3400rpm 240hp
3500rpm 250hp
3600rpm 260hp


and say when you shift from 1st to 2nd you land at 3400rpm for 2nd gear...the power you were making at 6500 is still more then the power you are now making at 3400rpm when you made you're shift...so you dont need to be making peak power at that point, just need to find that threshold of making the same or more power then the rpm point in which the shift will bring you to...

the numbers I used are just for arguements sake... not sure if I make my point clearly, but I dont really know how to explain it any other way...this is how I believe everything works...I could be wrong...

[jimmysprinkle]

Re: wideband install

I don't go by horsepower to determine my shift points. HP is determined by torque and RPM, and the torque curve directly represents the acceleration of the vehicle.

If I feel the car is accelerating quickly, but starts to fall off, I set the car to shift there. You want your car to build power to its peak, not leach of the post powerband power.

[ssms5411]

Re: wideband install

damn...I just realized my VE tables only go to 6400...that sucks...where can you get that fix

and what will happen if you try to take it to 6500? will it just lean out hardcore?

I would email or PM Viper he shifts at 6500 or 6700. Also a dyno will tell you where you power is at, shifting that high is hard on your head componets so if there is no power for shifting that high then I wouldn't do it. I think Viper has stage 3 heads with the valves cut down so he can shift that high while also running 1.7 rocker arms. Stay in your powerband and the car will be quicker.

[LETZRIDE]

Re: wideband install

I would email or PM Viper he shifts at 6500 or 6700. Also a dyno will tell you where you power is at, shifting that high is hard on your head componets so if there is no power for shifting that high then I wouldn't do it. I think Viper has stage 3 heads with the valves cut down so he can shift that high while also running 1.7 rocker arms. Stay in your powerband and the car will be quicker.

I'll pm him and ask him a few questions...so far I have had the car as high as 6200 and it feels like it is pulling hard with no sign of letting up...maybe at 6300 it will feel like it is letting off...I wont know until I get it up there...and I wont be going to a dyno until I can find a cheap one in the States...we charge like 200$ an hour over here and another 75$ just to strap it down...