4IN. DOWN PIPE

[CUMMINS_KILLA99]

WOULD THERE BE ANY POWER TO GAIN OR LOWER EGTS BY SWITCH FROM A STOCK DOWN PIPE TO A 4IN. I ALREADY HAVE STACKS BUT MY EXHAUST GOES FROM 3 OR 3 1/2 TO 4IN THEN TO THE 5IN. STACKS I WANT TO MAKE IT ALL 4 INTO 5 WOULD THERE BE ANY BENEFITS FROM DOIN THIS I ALSO HAVE NO MUFFLERS

[Jonathan734]

I would imagine your EGTs would drop, maybe a slight power increase as well. My EGTs dropped when I put my 4in down pipe on.

[willypscustoms]

mine dropped when i switched to a 4" down pipe

[Logan]

Yeah, should run cooler.

[CSIPSD]

You wont feel anything seat of the pants but you will drop about 100 at max EGT.

[sttstroke]

I just put on a 4'' turbo back saturday. The stock pipe was already straight. The only differance is the bottom end power seems smoother, lowered temp, and sounds better.

[Stroker7.3]

anyone know who i can get a 4" down pipe and mid pipe to my stacks