3inch single exit exhaust too big for N/A

blacknismoZ · 12-05-2011, 11:38 PM

Anyone has this set up? Im planning to do 3inch single or 2.5 single exit? anyone has dyno chart with 3 inch single?

98intrigue · 12-06-2011, 12:10 AM

Quote:

Originally Posted by blacknismoZ

Anyone has this set up? Im planning to do 3inch single or 2.5 single exit? anyone has dyno chart with 3 inch single?

It won't be a problem... Depending on a few things, I'll be running FI LTHs with my 3" single exhaust with a HKS Hi-Power muffler.

blacknismoZ · 12-06-2011, 12:23 AM

Quote:

Originally Posted by 98intrigue

It won't be a problem... Depending on a few things, I'll be running FI LTHs with my 3" single exhaust with a HKS Hi-Power muffler.

Thanks, I notice on your pic your single is on the driver side. any reason why? Im planing doing mine on right

98intrigue · 12-06-2011, 12:37 AM

Quote:

Originally Posted by blacknismoZ

Thanks, I notice on your pic your single is on the driver side. any reason why? Im planing doing mine on right

No particular reason...that's just the way the piping was ran.

NYBladeZ · 12-06-2011, 12:22 PM

Wow FI LTH plus 3" single HKS exhaust? Must be loud as hell

and you have the power to back up the screeeeaaam.

fuct · 12-06-2011, 01:41 PM

wouldn't it flow better through two separate exhausts than routed into one?

blacknismoZ · 12-06-2011, 04:08 PM

Quote:

Originally Posted by fuct

wouldn't it flow better through two separate exhausts than routed into one?

Most JDM exhaust like Amuse used 3 inch mid pipe then connect to 2 canister.

370ZTUNE.com

im guessing same flow but lighter. I just want lighter exhaust without going TI.

NYBladeZ · 12-06-2011, 04:15 PM

for a single turbo setup a large single exhaust is ideal of course you then need to either live with the extra bumper cutout or fill it somehow.

awkwardturtle · 12-06-2011, 09:42 PM

I doubt it. To be honest, I keep wondering why every company keeps putting out the same 2.5" exhaust. It's almost as if people are afraid of 3" exhausts.

In the civic community (8thcivic), everyone ran 2.25-2.5" exhausts for years because of these claims that a 3" was 'too big'. Finally a company came out with a 3" and showed that it gained everywhere, with no losses, and now no one wants an exhaust that isn't a 3". I suspect the gains would be just as great (greater) here. I really don't get all of the FI guys who are running 2.5" DPs/exhausts. That one really boggles my mind.

edub370 · 12-06-2011, 11:34 PM

dual 3" WILL lose you low end torque. back ressure creates torque. sure u might gain slight hp up top but the butt dyno will feel like there is less power because of the torque loss.

and before anyone asks "how do u know if a 3" will lose power? have u tried it?"... well no i havent, but i understand how cars work...

"Horsepower sells cars, torque wins races".

-Enzo Ferrari-

blacknismoZ · 12-06-2011, 11:38 PM

^ not sure if you're talking to me but i want single exit 3 inch exhaust.

edub370 · 12-06-2011, 11:44 PM

Quote:

Originally Posted by blacknismoZ

^ not sure if you're talking to me but i want single exit 3 inch exhaust.

i was more responding to awkwardturtle above. comparing a single 2.25" to a single 3" doesnt mean it would work on duals.

i think a single 3" would work great on our cars tho. our engine would definately create enough exhuast gas take advantage of that type of setup

blacknismoZ · 12-06-2011, 11:53 PM

just making sure lol... btw how do you like your cnt catback w/ test pipe? loud?

edub370 · 12-06-2011, 11:57 PM

not too loud at all. very low rumble at idle actually but really opens up up top.

here's a vid to give u an idea

370z CNT cat back and test pipes - YouTube

to be honest nobody that has heard it has even noticed im running test pipes

blacknismoZ · 12-07-2011, 12:08 AM

damn sound really good. what kind of test pipe? is your check engine light on? notice any hp increase?

12-05-2011, 11:38 PM	#1 (permalink)
blacknismoZ Base Member Join Date: Mar 2010 Location: PDX Posts: 166 Drives: 2010 370Z NISMO Rep Power: 15	3inch single exit exhaust too big for N/A Anyone has this set up? Im planning to do 3inch single or 2.5 single exit? anyone has dyno chart with 3 inch single? __________________ HKS filter, DBA 5000/4000, HPS, Stoptech. bone stock dyno at Surgeline tuning 294whp 251tq.

12-06-2011, 12:22 PM	#5 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	Wow FI LTH plus 3" single HKS exhaust? Must be loud as hell and you have the power to back up the screeeeaaam. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

12-06-2011, 04:15 PM	#8 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 20	for a single turbo setup a large single exhaust is ideal of course you then need to either live with the extra bumper cutout or fill it somehow. __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

12-06-2011, 11:34 PM	#10 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 20	dual 3" WILL lose you low end torque. back ressure creates torque. sure u might gain slight hp up top but the butt dyno will feel like there is less power because of the torque loss. and before anyone asks "how do u know if a 3" will lose power? have u tried it?"... well no i havent, but i understand how cars work... "Horsepower sells cars, torque wins races". -Enzo Ferrari- __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

12-06-2011, 11:38 PM	#11 (permalink)
blacknismoZ Base Member Join Date: Mar 2010 Location: PDX Posts: 166 Drives: 2010 370Z NISMO Rep Power: 15	^ not sure if you're talking to me but i want single exit 3 inch exhaust. __________________ HKS filter, DBA 5000/4000, HPS, Stoptech. bone stock dyno at Surgeline tuning 294whp 251tq.

12-06-2011, 01:41 PM	#6 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	wouldn't it flow better through two separate exhausts than routed into one?

12-06-2011, 09:42 PM	#9 (permalink)
awkwardturtle Base Member Join Date: Nov 2011 Location: minnesota Posts: 98 Drives: 07 Civic SI Rep Power: 14	I doubt it. To be honest, I keep wondering why every company keeps putting out the same 2.5" exhaust. It's almost as if people are afraid of 3" exhausts. In the civic community (8thcivic), everyone ran 2.25-2.5" exhausts for years because of these claims that a 3" was 'too big'. Finally a company came out with a 3" and showed that it gained everywhere, with no losses, and now no one wants an exhaust that isn't a 3". I suspect the gains would be just as great (greater) here. I really don't get all of the FI guys who are running 2.5" DPs/exhausts. That one really boggles my mind.

12-06-2011, 11:53 PM	#13 (permalink)
blacknismoZ Base Member Join Date: Mar 2010 Location: PDX Posts: 166 Drives: 2010 370Z NISMO Rep Power: 15	just making sure lol... btw how do you like your cnt catback w/ test pipe? loud? __________________ HKS filter, DBA 5000/4000, HPS, Stoptech. bone stock dyno at Surgeline tuning 294whp 251tq.

12-06-2011, 11:57 PM	#14 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 20	not too loud at all. very low rumble at idle actually but really opens up up top. here's a vid to give u an idea 370z CNT cat back and test pipes - YouTube to be honest nobody that has heard it has even noticed im running test pipes __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

12-07-2011, 12:08 AM	#15 (permalink)
blacknismoZ Base Member Join Date: Mar 2010 Location: PDX Posts: 166 Drives: 2010 370Z NISMO Rep Power: 15	damn sound really good. what kind of test pipe? is your check engine light on? notice any hp increase? __________________ HKS filter, DBA 5000/4000, HPS, Stoptech. bone stock dyno at Surgeline tuning 294whp 251tq.

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