Stage_3

So nice,...yet so nasty sounding! \m/ (I mean that in a good way!) Awesome car Burton. Sidepipes for the win!

rmurer

sounds very good burton!

FromZto5

Guys, thank you very much - I appreciate it a lot. I'm very happy with her current state, audible and power wise. I'd say she's Perfect (again), but y'all I'd be lying because there's always something I'd want to add eventually. HAHA.

The biggest thing was going to the 3/8" restrictor plates. (pasting this from my other response) So yes, the restrictor plates do in fact reduce sound levels - they reduce air flow (therefore sound) out the sides. Before, the sides were WIDE open, no restriction. So, since my Corsas were still "mufflers" they had restriction. As we know from fluid dynamics, things take the path of least resistance. So the flow was completely coming out the sides, and it actually felt a tad more sluggish at low rpms. (To add insult to injury, I couldn't full utilize my hp gain in the upper rpm band because I couldn't take it that high for obvious audible reasons).

Thus I had 3/8" restrictor plates fabbed up, and sandwiched in the flange opening - much like the stock Boss 302 and its stock restrictor plates. Imagine, I reduced the flow/sound by a crazy 81.25%!!! (wide open was 2" opening). I mean I love loud, but when I got it out of the shop it was ridiculously loud. And I knew that a) the cops would find me, b) I couldn't enjoy my car because I couldn't rev it up (safely) that high, therefore c) I lost power in the lower rpm range where I drive most of the time.

The new plates are PERFECT. I got more torque down low, plus up high, I can feel (butt dyno) that added 25 to 30whp or so, additional pull from before. Can't wait to get it dyno'd again.

5.M0NSTER

Wow, that sounds mean. Well done. The pop during the in gear coast down has an interesting note to it.

FromZto5

Thanks man! Yeah she's the best she's sounded so far.

Speaking of which, reminds me I have to sell my Borla x pipe now! No longer need since I'm kooks from headers back. Anyone interested before I post in on the for sale section?

Skrapmetal

Sounds good! Bring it to Karls in June? I should be there with the Boss.

FromZto5

What's up Skrap! Yeah man, I hope to. I think my son has a baseball tourney there that weekend, so it would be PERFECT! I'll need to talk to my bro in law to make sure he will have room for me in the garage, or I ain't driving her overnight. hehe.

Btw, to your question earlier - I don't need a new tune because my tuner already gave me the tune last year with the provisions intact for the headers and O2 sensor relo's.

In fact, I just datalogged the new setup, sent them in, reviewed them and they gave me the thumbs up that all was perfect. So I'm good to go. I reset the ECU though, so it can learn the new setup.

FromZto5

Had to update this thread with a few changes. Corsas are now for sale, and here's a few pics and a vid of the new setup. Wanted a change... had the Corsas on for almost 2 years.

Stage_3

Sounds great Burton!
Enjoy.

FromZto5

Thanks a ton Tony! Enjoyed driving her today to work