Ok, I was supposed to buy a guy's slightly used N1 single cat-back, but he has never responded to my picture requests, sooooo....Will I see any substantial hp gains running the RB header and presilencer w/o an aftermarket cat back? I will get a new N1 here in a month or so when I can afford it, but in the interem, will this setup be good? 1991 n/a....

 

Oh some on, can someone help a brotha out?

 

guess it depends on the condition of the stock mufflers but ya, it should give pretty good improvement in power.

 

My stock mufflers are fine. How would the sound be?

 

about 5x more power then only adding a catback...

 

you are gonna put a cat-back in a month anyways so install what you have now !!

you will gain a little bit of HP with an aftermarket cat-back.

 

Just wondering what to expect. I know the biggest exhaust performance gains comes from the header and presilencer, but I was just wondering! Thanks guys!!

 

leave the entire catback system off and I guarantee you'll see a performance gain Might be a bit loud though!