Readheart,

I have the Exact cross over on ur NGK TR-6 now, but in champ, thanks to the reference cross over you send me.

About the engine making more than 550HP I doubt it. My guess is between 380-420hp most at the crank!!!!!

By Allen instructions, I'll be testing from 100HP shot with a Fuel pressure gauge and the AEM WB O2 and then climb up as we succed with the tune.

Where can I buy that presure sensor to turn of the NOS?