BOSS Intake on Modded Auto

[05yellowgt]

I did have a question about what fuel was used with this car? Was it pump gas or some level or race fuel? I'd love to see you guys throw some E85 and larger injectors if needed and see what you can do with some more DRC and timing.

 

[Livernois Motorsports]

I must have something to do with the different runners in this intake.
There is a guy with a turbo cobra here in new orleans that had used stock intercooler with sheetmetal intake and his dyno graph had a few peaks and valley's. Then he had new custom intake built with longer runners and the graph was more consistant with no peaks or valley's.

I'm not the tuner, not am I as technical as some others in the shop, but I think you're correct.

I did have a question about what fuel was used with this car? Was it pump gas or some level or race fuel? I'd love to see you guys throw some E85 and larger injectors if needed and see what you can do with some more DRC and timing.

When we put it together a few months back, we didn't have time to test before an invite shootout and ran race gas to be safe. The last few times it was at the track, it had 94 octane pump gas.

-Rick

 

[Full_Tilt]

Contrary to popular belief, short runners dont actually correspond to power at high RPM, they simply resonate at a wider range or RPM so the torque band gets flattened out.
Longer runners will favor a particular range, which is typically tuned in on modern cars, so it will focus the torque in a "lump".

If you look at a sportbike dyno you will see a overall very flat torque band that remains relativity constant (although bumpy) across most of the RPM range. This is due to the very short runners.

This is a cbr1000, as you can see the torque remains pretty flat over an amazing 6000 rpm range

Its something that hasnt be brought up, but I havent seen a good dyno starting at real low RPM (like maybe 1500), its possible that because the band will be flattened out by this manifold, that there may actually be gains at low RPM in addition to those at high RPM.