I was at the dyno today trying to get some spray runs in with the new harris standalone. I started with about 54psi and it was really rich. Long story short we ended up with about 30psi and the aft was at about 11.3 wot on spray. Is it normal to have to put the pressure down so low. Im running a tnt ring kit with the tnt 150 jets in.

Alex

 

Depends on what PSI the TNT jetting is for, although 30 psi seems low. Did you verify PSI with another gauge?

Matt

 

I verified the gauge and it works properly. The kit was designed for an ls1 car so i would think it would need to run off of stock 58psi. We had it at about that and it went insanly rick and only made like 50hp on a 150 shot.

 

Anyone else actually use this kit and has any advise?