Are most exhaust applications for our cars using 2.5 or 2.25 ? Also whats the diameter of the piping on the Stillen CBE...I already know the tips are 4.5 Thanks
|
|
LinkBack | Thread Tools | Display Modes |
05-13-2009, 09:40 AM | #1 (permalink) |
Track Member
Join Date: Jan 2009
Location: Jersey
Posts: 919
Drives: 370Z (SOLD)
Rep Power: 279 |
Stillen exhaust piping diameter ?
Are most exhaust applications for our cars using 2.5 or 2.25 ?
Also whats the diameter of the piping on the Stillen CBE...I already know the tips are 4.5 Thanks
__________________
Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold) |
05-13-2009, 01:01 PM | #2 (permalink) |
Track Member
Join Date: Jan 2009
Location: Jersey
Posts: 919
Drives: 370Z (SOLD)
Rep Power: 279 |
2.5 - nevermind
__________________
Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold) |
05-13-2009, 07:50 PM | #3 (permalink) |
Track Member
Join Date: Feb 2009
Location: so cal
Posts: 793
Drives: 2009 370Z 6MT
Rep Power: 270 |
i think i read somewhere that it varied from 2.25 to 2.5 since it had different pieces
and that it would have produced more power if they stayed 2.5 all around
__________________
Stillen G3 CAI*Stillen CBE*Berk's HFC*Eibach Prokit*Hotchkis Sways*ichiba 15/20mm spacers*? Oil cooler*Stillen Pulley*Stillen Headers |
05-13-2009, 07:54 PM | #4 (permalink) |
The370Z.com Sponsor
Join Date: Dec 2008
Location: Costa Mesa, CA
Posts: 1,197
Drives: 2004 G35 Coupe 6MT
Rep Power: 533 |
Written by someone who has no experience building an exhaust for a 370Z. The piping size does vary, by design, tuned for maximum power.
Last edited by Josh@STILLEN; 05-13-2009 at 08:04 PM. |
05-13-2009, 08:02 PM | #5 (permalink) |
Track Member
Join Date: Jan 2009
Location: Jersey
Posts: 919
Drives: 370Z (SOLD)
Rep Power: 279 |
LOL - GG Josh...
but seriously i think its 2.5 into 3ish in the center back out to 2.5..
__________________
Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold) |
05-13-2009, 09:07 PM | #6 (permalink) |
Track Member
Join Date: Feb 2009
Location: so cal
Posts: 793
Drives: 2009 370Z 6MT
Rep Power: 270 |
lol not my opinion i just read it
and i found the thread for it http://www.the370z.com/engine-drivet...html#post71932
__________________
Stillen G3 CAI*Stillen CBE*Berk's HFC*Eibach Prokit*Hotchkis Sways*ichiba 15/20mm spacers*? Oil cooler*Stillen Pulley*Stillen Headers |
05-13-2009, 11:01 PM | #9 (permalink) |
A True Z Fanatic
Join Date: Jan 2009
Location: GSO
Posts: 2,803
Drives: VIR
Rep Power: 188 |
Good to have an ex-nissan engineer on the board then... what area were you assigned to ? how long did you work there ? nissan corporate or the sales / marketing division ? new vehicle design, aftermarket parts (nismo), dealer support, or something else ? lots of engineers around here... i'm sure most will tell you they keep their expert opinion focused on what they know... so, were you working on thermal management and emissions?
|
05-13-2009, 11:05 PM | #10 (permalink) | |
The370Z.com Sponsor
Join Date: Dec 2008
Location: Costa Mesa, CA
Posts: 1,197
Drives: 2004 G35 Coupe 6MT
Rep Power: 533 |
Quote:
We always appreciate editorial on our products, and are always open to discuss our process (within reason, some things must remain in R&D to not hand the keys to the castle away.. ), a simple phone call could have assisted in some background information on the exhaust design. Making assumptions on the design elements and their reason for function, without doing extensive development testing to back the statements up, borderline as irresponsible as the general consumer can interpret that statement as fact, such as what you've seen happen in this very post, due to the story you've written and the liberties you've taken. That's also fueled by the inconsistency in every other dyno being run by numerous forum members, including the results from the owner of the other 370Z tested at that same facility, on the same dyno. So in regards to the specific caption from your article.. "The Stillen 370Z exhaust goes from 2.5 inches in diameter to 2.25 inches and back again in several places along the flow path. If it were 2.5 inches all the way through, it would make more power" is incorrect and irresponsible, the exhaust was designed as is for a reason, and a good one, horsepower and tone. My statements are based on making an assumption in saying you have not designed a specific exhaust system for the 370Z and have not tested the effects of tubing sizes and their effect on power and sound.. if I'm incorrect on that point I apologize. |
|
05-14-2009, 12:06 AM | #13 (permalink) | |
Banned
Join Date: Jan 2009
Location: Cypress Ca
Posts: 69
Drives: 300ZXTT, 350Z, 200SX
Rep Power: 0 |
Quote:
I have been tuning and racing Nissans for most of my adult life. |
|
05-14-2009, 12:19 AM | #14 (permalink) | |
Banned
Join Date: Jan 2009
Location: Cypress Ca
Posts: 69
Drives: 300ZXTT, 350Z, 200SX
Rep Power: 0 |
Quote:
I have been a friend and supporter of Stillen for many years and have used high quality Stillen parts in many evaluations I have written for many magazines over the years. Stillen has always helped me in providing support for my editorial and racing endevors. However, I call them as I see them. I always have, otherwise an article would seem like a catalog discription for Stillen and not a neutral observation. Although the Stillen exhaust is a good high quality piece which I stated in my editorial, in my opinion it can be improved upon. All designs including every single thing I have designed can be improved upon. Stating all of somethings attributes, good and not as good gives more crediabitly to a part than if it was an all sunny review heaping praises like a piece of ad copy. As for reasons in dyno testing inconsistancy. Technosqaures superflow dyno has a correction programmed into it where it trys to mimic the output of a more liberal dynojet which is useful when trying to compare the output to what others are getting with the more common dynojet. Killerbees report uses these corrected numbers. However I prefer to state and publish the actual much lower output of the superflow. I want to be conservative as my reputation is on the line as a reporter. When looking at a more stingy dyno, you have to look at the delta from part to part, same car, same dyno, not the numbers compared to different cars and different dynos. Last edited by smartbomb; 05-14-2009 at 12:34 AM. |
|
05-14-2009, 12:27 AM | #15 (permalink) |
The370Z.com Sponsor
Join Date: Dec 2008
Location: Costa Mesa, CA
Posts: 1,197
Drives: 2004 G35 Coupe 6MT
Rep Power: 533 |
I can appreciate that, and your review stated both things you liked and things you would have preferred to see, and many of those things we've had the same discussions internally before releasing.
But making a statement so determinate, you can see how others reading the stated caption would take that to mean fact, given your resume in the aftermarket world, when it really hasn't been tested on your end? |
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Stillen Exhaust, headers, and CAI | midgetcricket | Engine & Drivetrain | 8 | 10-18-2010 08:49 AM |
Stillen Gen3 Intake, Berk Hi-flow cat, and Stillen cat-back exhaust | axio | Intake/Exhaust | 82 | 07-31-2009 12:41 PM |
Can Wheel Diameter Be Reprogrammed? | ChrisSlicks | Nissan 370Z General Discussions | 6 | 04-29-2009 02:50 PM |
Stillen Exhaust | DinoJ | Nissan 370Z General Discussions | 2 | 04-27-2009 03:47 PM |
Exhaust Piping Size? | JonnyH | Intake/Exhaust | 7 | 01-14-2009 01:57 PM |