My buddy had the N1 Dual on his '91 T2 and it was pretty loud when you got on it. What do you have in front of the N1? Stock? Downpipe, etc? If I were you, just keep the N1 setup and get the silencers for it. If you don't have anything in front of it, go w/ a racing beat dp and ps and you'll be fine. I have the RB downpipe and ps on my GTX right now...its hella HELLA loud..oh wait, I don't have a catback yet..maybe thats why https://www.nopistons.com/forums/pub...>/rolleyes.gif

As for the HP gains from RB..they are legit. There systems frees up like 3 to 4 psi of boost and that alone is worth its weight in gold! I think they claimed like 2 to 3 psi, but I've seen a stock '87 T2 with JUST the RB turbo back exhaust and it was pushin 10.5 psi easy!

my 89 TII with RB 3" dp, custom 3" mp and apexi n1 catback ran atleast 11psi with the occasional spike to 13-14 psi. i just love the exhaust note of my exhaust. can't wait to get my car running again very soon

Yes, it's true, but it's accompanied by an increase in boost. That helps with the power increase.

On my old TII I added the RB downpipe/presilencer combo, and I noticed that my clutch started slipping afterwards. https://www.nopistons.com/forums/pub...#>/biggrin.png

Put in the motor!

i'm probably just gonna throw the motor in maybe tonight

Is everything ready to go in?

what about hp gains on an n/a

Is everything ready to go in?[/quote]

everything is ready but i'm gonna wait. i want to do a few thing and buy some stuff