Hey guys and girls, Im tuned with everything in my sig. I was wondering if i replace my ETS hi flow cat with a ETS test pipe will i need a retune or would it be safe without it? Im not fond of paying another 500 just for a test pipe retune. Thanks in advance

 

i don;t think you would need one... with those two small mods... with what you have done... it should have a dramatic effect.

 

Thanks thats what I was thinking since im tuned for the hi flow shouldnt be a problem

 

Can I ask why you wish to switch from a hfc to test?