Ultimate 3.8 Exhaust by Stefan

[toast]

Well are hearders really nessary when you have the tubulars already from the factory? I have heard a cars with and without headers with the same set ups and the both sound pretty much the same.

[ February 28, 2003: Message edited by: toast ]</p>

[Camarorulz]

How does it sound above 4k? Is the popping completely eliminated, or did you have it to begin with. It seems that people with the 3.8 who don't have the pop still have a ricey buzz. I will admit right now that mine pops big time

[FirebirdGT]

<blockquote>quote:</font><hr>Originally posted by Deuce Bigs:
sounds cool but i gotta disagree about your CIA headers statement. you say that the primaries are too small. the cia headers have a 1.5" primary while the rksport headers have 1.75" primaries. the standard lt1 headers are 1.625" primaries and heavily modded ones get 1.75" primes. the ls1 which makes considerably more power than the lt1, most header manufacturers make them 1.75" primes. do you think the 3.8 flows comparably to the ls1? there is no need for large primes like that it's just going to slow the exhaust down to much. <hr></blockquote>

I agree and disagree.

The engine size is not what is important here, but cylinder size.

If you do a comparison, a LT1 1.625" primary would be similar to a 1.5" on a 3.8. A 1.75" LT1, 1.65" on the 3.8.

So it is my opinion that the 1.5" CIA is small and the RKSport large (but the better of the two options). What we need is a 1-5/8" primary header.

I have not read in any thread what the Pacesetter primary size will be. Anyone?

[ February 28, 2003: Message edited by: FirebirdGT ]</p>

[Deuce Bigs]

as soon as i learn more about auto math i'll be able to back this up more but i did talk with dave inall a lot from incon systems (they do a lot of twin turbo systems for ls1's and mustangs with incredible results) when i talked with him about a turbo system for my car i told him my goal was 450-500rwhp and part of what he said i needed was 1.5" primaries on the headers. now that may have been because i needed to keep the exhaust speed up to spin the t60 fast enough but still. 500 rwhp and he recommends 1.5" primaries has gotta say something. anyway that's all i got to back me up right now.

[Galigator]

Let´s Wait til he put the EXHAUST VIDEOS AND THEN WE´LL BE ABLE TO JUDGE WHAT HE SAID.


Don´t you think.-

Fbird 97 V6 3.8

[img]graemlins/burnout.gif[/img]

[Jason McCallister]

I have a recommendation for recording exhaust clips....

Attach a lapel microphone to the rear bumper with some masking tape, run the cable to a laptop, and start up a WAV recording program like Microshaft's "Sound Recorder". Set the recording quality to 16 bit 44kHz. Don't forget to compress the WAV's to MP3's before posting on the web! ;)

Road/Wind noise will be a problem at higher speeds. I recommend putting a wind screen (should come with the mic) on the mic to help reduce road/wind noise.

Happy Recording! :D

[pgriffith]

THats the same exact exhaust setup I have. Except I dont have the blower :( . It does sound damn good.

[naptown]

Well I have the SLP CAI, RKSport Headers, I just need to know which catback to get. Also what are the gains for these mods? CAI/Headers/Catback

[satellite98]

<blockquote>quote:</font><hr>Originally posted by mw02:
Why does everyone seem to be stuck on flowmaster? <hr></blockquote>

Cause, we're cheap bastards [img]tongue.gif[/img]

[navyblue2000]

hows this for a plan?

all that same that stefan has, but instead get a Z or SS muffler, and in the Z case open the exhuast inlet to 3", and put a cutout around the end of the straight portion of the I pipe...
taht way, you STILL HAVE good gains around town, and a nice rumble, but nothing ricey in the high RPM (i can make a sound clip of my Z exhaust)
and a cutout to unleash hell when you want ;)

[1998silverbird]

<blockquote>quote:</font><hr>Jeff! Nice to see you on the board again! You should post the story of you, Jenn, and the Viper...

(James is going to LOVE that one...)

<hr></blockquote> Well Jenn and I Are Drive the Virus one day last summer ( when the blower was off) and we roll Down to the ocean front to the exon station ( were all the cars hang out during the summer) and we roll into the parking lot and the only space avaliable is between a Viper RT and a 1994 Supra TT.. So we back in and park and I notice the viper has his hood.. Now The Charger on the Virus is not hooked up but the Alternator or another pully still wines a little ( nothing compared to the Procharger).. Jenn ask's the dude in the Viper If he runs his car.. He says yeah but I am going to get the twin turbo setup for it here in a couple of weeks!! He then asks us if thats our Firehawk!! ( because of the hood and exaust) We say yep!! Then he notices the Procharger stickers on the fender then asks the usual stupid question that everyone asks Stephan the first time people meet him is your car supercharged?? I said yes then he said He will run me when he get his turbos on!! I thought that was funny seeing a guy in a viper wimp out from a run against a firebird..

[whtefbrd96]

HAHAHA i had missed that story Jeff definatley classic. and about the exhaust.... I DEFINATLEY say THE BEST sounding v6 EVER. :D

[Ironman24]

I'm another witness to agree that Stefans car does sound awesome as a whole package with the blower. I'm not a big flowmaster fan but it does sound good on his car.

I ran a Decoma 3" catback for 5 years, I recently sold it. It was a rare exhaust to have and I got one of the last ones in stock. It sounded great but not near as good as a Borla.

After reading this whole thread I find it funny nobody mentioned a Borla. Today I returned from the exhaust shop with a new Borla installed to a 3" off road pipe and the RK Sport headers.

Totally different sound, it got rid of a lot of that raspy/ricey top end and just sounds plain awesome. I am extremely happy with the Borla and would highly suggest it. Yes I know it's expensive but worth every penny I spent on it.

I should be able to go out and do some runs with the video camera soon and record some sound/video.

[naptown]

Well some of us cannot afford a Borla Catback, so therefore we need something else. I need to know which catback I need with a RKSport Headers/SLP CAI setup? I dont want Loud, I want nice sounding. I dont plan on changing my cat so I want a 2.5 exhaust or a 2.75 if they make one? WHICH BRAND?!

[MotorHead69]

stefan you have it all wrong straight headers on an 8 is the best