I know there is more than 1 subject on pipes but non on just this.

I was thinking about putting straight pipes on my 03 5.4 Screw and I read something about they don't run good with straight pipes because of no backpressure.. Is this true?

Thanks for the help guys

alex

 

u will lose bottom end with the lessened backpressure.

 

Thanks a lot Dan

 

i wondered the same when i got my straights. maybe lost a smidgen, if any at all. defiantely not enought to keep me from doing this again.

-Lee

 

you really don't lose much at all,especially if you just chop off the muffler.if you have full straight pipes you lose a little and if you have straight pipes from the cats back i don't think you lose any,i thought mine actually gained power from idle on up to 5,000