If your target is ~425HP street car, a different set up (smaller turbo) could meet your sound goals and give you a better powerband as well... Just sayin, I know few people on Evom like to hear the words "smaller turbo"

NM I just saw your other thread...

 

I did get an RRE stealth exhaust last fall, but have not had a chance to put in on yet. I'm dissapointed it came in 3rd loudest on BluEVOIX's list, after reading several reports on this board that it was so quiet (again, relative term). Hopefully, it is better than reported here. I already own it, so might as well slap it on. Will be keeping the cat.

Anyway, I ran a 12.54 @ 108.6 and I hope to get back to the track with just the exh change soon to see if the Fujitsubo is really holding me back any. The only problem with back to back is I will not be getting retuned after the exh change. Should not really need a tune jsut for that, unless the Fujitsubo was really bottling things up.

 

I got my RRE stealth used. So it is possible that it had a lot of miles on it and the sound absorbing material wore down before me installing it. Many people say it to be really quiet, but from my experience it was not. Hopefully you have better experience than I did.

 

OP, the gt35r will NOT make the car louder at idle or under light cruise. It will of course be louder under boost and WOT. I can't stress that to you enough. I could tell you this all day but I know you won't believe so please ask some knowledgeable tuners that you feel comfortable taking advice from.

The cams could make it louder depending on your how aggressive your cams are. This is a whole 'nother can of worms. So before anything else is said what are your cam specs?

And I will upload vids of my exhaust when I get a chance. Probably in the next 2 days. My life is pretty busy as is so no promises.

 

Don't bother with the vid. I appreciate it, but they are almost worthless to try to gauge loudness. My video of my car portrays it as quite quiet, and I assure you it is not. It gives the racebikes i have owned in the past a run for their money.

My cams have been mentioned several times, but they are HKS 272's.

If the turbo is an exhaust restriction, and a larger turbo restricts less exhaust, then why would I expect a larger turbo to be as quiet as a stock turbo? This is not my first rodeo, it is just my first Evo. I've heard big turbos on several cars, and they were all loud. Though admittedly most were not as loud as my Evo, they were all too loud for leaving my house in the middle of the night.

I will go to the next local meet and hope that someone is there with a GT35R so I can compare ridiculousness, but honestly, it boils down to two choices.

I can either turn up the boost and ride around with 500whp, or I can swap to the stock turbo and ride around with ~350. I'm leaning towards going back to a stock-frame.

 

+1 for the tanabe medallion touring, second evo, second tanabe medallion. nice deep tone and under 93 db as well. very high quality setup

 

You know, you should take this suggestion more seriously. Personally I have seen this technology used on the intake systems of two stoke motors in jet skies by Bombardier Corp. ( a very high tech Canadian Company, they also build Corporate Jets and high speed rail trains ). They spent large $ to incorporate this into their jet skies ( another, and very credible, testament to the technology ) and being that it is a very easy and relatively inexpensive way to eliminate the drone in your exhaust ( as stated in the above quote ), I would at least try it. Also, you will not have to give up most of your current HP if you used an FP "Green" Turbo ( check out some of the threads about the "Green" turbo ) and it has a much smaller turbine side than your current turbo so it would also have more of a muffling affect. You might even find a used "Green" for cheap! Combine these things with a resonated test pipe and a quieter rear straight thru muffler and you got it all!

 

I don't think the green will make the 575-625 hp that the AMS kit advertises, but I could be wrong, so it would be giving up horsepower potential. I agree that I'd like to find a used FP though, but it would have to be a good price. In all likelyhood, I'd run the IX turbo until it needs a rebuild, then send it to FP.

I am taking it seriously. If I change to a stock-frame, put a quiet cat-back on it, and it is still loud and droning, then I will have someone fabricate that piece. I don't expect that though, to be honest.

 

I was thinking more of the 400 to 450 WHP, you were referring to, that your car is presently tuned at.

 

At this point man just call a reputable evo shop and just explain to them what you need. You're getting advice and anecdotal evidence from every angle. 20mins on the phone with a good shop will kill all doubts and give you an idea of what you need to do.

 

I prefer to make my own decisions and hoped that I could get good quiet exhaust
recommendations when I created the topic. But yes, now that i have decided to go
back to a stock frame, a call to a shop is in order.

 

I have a Cobb tbe w/ a megan resonated testpipe, I don't think you can get quieter than that, WOT is a diff story.....i don't have a clip yet, no cams either....

But I had a Turbo XS tbe & Man is a night to day difference w/ the droning....

 

OP, is your car a RS?

I added hi density carpet foam in the trunk of my car....maybe added ~15/20 lbs....its beneath / above my spare tire, between the trunk liner & fenders, above where the speakers live.

now this obviously didnt do anything for the outside exhaust note, but it did quiet it down in the cabin.

i have heard ~5-8 different rre exhaust systems, they are all quiet for the most part, but for what ever reason, some were louder than others....that meaybe due to the resonators that were used. i believe they offered both perforated & louvered types...

I have always heard the cobb exhaust is quiet, but never heard 1 in person.

I am toying with the idea of making a whole new exhaust, but it sucks that it will gain so much weight in doing such....

btw, on ebay there are exhuast shipped for $120- that looks ok & puts the muffler in a oem postion / fashion = non jdm style!... i am thinking about getting 1 & using this to fabriate a new exhaust, as the pipes are bent correctly & would cost the same / less than making it myself. heck, 1 90° & 1 180° bend is ~$90 alone in s.s., then you still need to get ~4' of straight, a bung, a flange, rod for the hangars....it adds up quick.... i havent even added a muffler & silencer yet!

 

I recently put a Thermal R&D exhaust system on my car and it is super quiet. It's so quiet that I am actually upset about it. All I hear is the blow off valve and turbo spoolin. I think Thermal R&D does not make the exhaust anymore but there are people that still sell the system such as HorsepowerFreaks.

By the way, this exhaust has a good reputation in the DSM world.

 

Not an RS. I think the Cobb is discontinued. I'm toying with the Megan. Someone local PM'ed me recommending running a dual muffler setup, and I may give this a try to keep from having to "unload" my GT35R. If I can get it mostly quiet, I can take my time selling the turbo setup or looking for a local IX setup trade or used FP trade.

I'll check into them. I'm still kicking around all my options.