The FI exhaust, on an independent test, put out 87db - with stock cats and manifolds. With the 400 cell cats, it went up to 91db. I do not know what the 300 cell put out, but I would VENTURE A GUESS at about 94-95db.

My car - for instance - headers, ceramic cats, intimidator - engine mods, Vortech and more...put out 98DB about 6 weeks after install. 6 months later, it was at 103db - but the car is heavily modified.

California standards are 95db. I know many cops who have ticketed bone stock G's and Z's for loud exhaust.

 

Rick,

Do you know the db of the stock exhaust with stock everything?

 

~81 - it varies by year...

 

Alright, so without headers, it looks like I'd be tip-toeing the line (maybe under with ceramics, over with metallics, but either way pretty close). I think I'll stick without HFCs for the time being, and when I get bored in a month or two, stick a set in.

I take it the tests were done the standard way.....4500 rpm, yes?

Thanks for all your help Rick. I appreciate your technical replies, rather than just vague crap answers.

 

Yes - in a vacuum negative sound chamber, to avoid wave cancellation due to sound pressure increase.

Rick

 

Jeeeez man, I woulda been cool with "not in an alley or parking garage." Any chance you'll be at any of the meets or bbq's goin on soon? I'd like to hear exactly how loud the 103 dB is....

 

- hey there's something to be said about due diligence!

So - I would love to meet up, but can't...and here goes a story I wasn't ready for yet - next week or over the weekend, OK...so here's that cat right out of the bag!

For the last few days, I have been completely reverting my car back to stock. Over the next few months - I will be making a decision on my next development platform as I meet with manufacturers, etc. Either the G37 Coupe or the Lexus IS-F are my choices. I cannot make the decision until likely January when I can begin to get my hands on a final production IS-F.

So - needless to say - over the weekend, I will be posting a list of 'items for sale'.

Rick

 

With all due respect to Infiniti (I love my G35), go with the IS-F. If it's anything like the prototypes/pics I've seen, it's 100x better than the new Hyundai Tiburon......oops, I mean G37.

Any chance you have a Stillen airbox in that list for sale? I'm looking for one, and they seem to be a little pricier than I'd like new, and hard to find used. Good luck with all your future ventures!

 

The IS-F is my choice at the moment. I've driven the prototypes already - and really need the production unit to make the choice. Developing an acceleration platform for modifications, aftermarket that is, for an 8 speed transmission just juices me up...it's a lot to work with, and many more options and choices to develop.

Also - no Stillen airbox - sold that about a year ago - I'm talking about a Vortech kit - with 4 pulleys, EMU, Injectors, Suspension, HKS Twin Power, and more, more, more...

Rick

 

Holy chit, 8 speed (I think I'd not only be juiced up, but juiceless, if you catch my drift....)?!?!?! Clutchless sequential, I take it?

Hmmm, can't afford the Vortech, but what suspension you getting rid of? I have front and rear SPC camber kits on the way, so I need to decide on coils and rims soon. Also interested in the "more, more, more" part... Probably need a tune eventually as well.... Let me know when you get a few of these things together, as I'm trying to get this stuff on ASAP.

PS: Don't you need a license to sell Emu's? Besides, I hear they have bad temperaments.

 

Yeah I would definately go with the IS-F over a G37. IS-F is a higher up in class & performance, like the M3. Which brings up the question: Rick, why don't you have the new M3 in mind? I like the IS-F, but prefer the M3. I believe it looks much sportier and, if it remains as it currently is with brand identity, the M3 will probably be sportier than the IS-F. I like both, but too bad a manual isn't an option for the IS-F.

Goodluck with the next car Rick!

PS. UnluckyCharms, I don't see how anyone could confuse a G37 with a Tiburon. I'm guessing you haven't seen the G37 in person

 

I know someone at the Fish and Game department ;-p

 

Lol, can't tell if the sarcasm meter is on or not.....I've seen a few cruising the freeways of LA. From the back, not even close, but the grill shape and front body lines are close. It's more of a half-brother or bastard child resemblance, not identical twins.

 

So - I don't like BMW's. Never really have. I like the 5 series styling - but I don't like the interiors...its just me. The new M3 was an option, I'm not a huge fan of the new styling though.

I don't know...re: sportier looks....

http://www.zdistrict.com/2007/01/14/lexus-is-f/

 

UNLUCKY - you have a PM