Which SFI rating is requiered for a nitrous car 9.99 and quicker? It has OEM firewall. Is it 3.2A/5 or do I need the 3.2A/15???? please say its 3.2A/5

 

3.2A/15 for under 10 sec ....correct me if if im wrong

 

i have 3.2A/5 impact i just bought so i hope im wrong

 

3.2a/5 is the one. nhra rule book says so.

 

Even when using nitrous? I am confused because the rulebook says its 3.2A/5 for 9.99 and quicker but then somewhere it says 3.2a/15 when, without oem firewall, turbocharged, supercharged, nitrous and when transmission is in driving compartment.

 

good to know

 

my buddy runs 8.40's with nitrous with oem firewall. 7.49 and quicker i believe that is when you need the other suit. i think.