How to differentiate CPI big vs small bore

[bansheeqc]

I have no idea what i have to check to differentiate a CPI big bore , small flange out of frame between a small bore, small flange out of frame CPI.

 

What part of the pipe i have to check?

 

Thank you

 

Bansheeqc

[bansheeqc]

anyone???

[dragbanshee]

anyone???

 

 

I think the stinger tubes are bigger diameter, but not sure what size.

[Stellar Performance]

The stinger tubes are larger Diam. and same with the neck size at the flange. Big bores, the pipe is just a little bit smaller than the flange, small bores, the pipes steps down a fair amount.

[bansheeqc]

thank you, My friend have a set of cpi drag pipe in the garage, and i don't know if it's small bore or big bore. I check with the diameter at the flange, thank