01-21-2008
|
#1
|
Join Date: Mar 2007
Location: Minneapolis
Posts: 469
|
Suggestions...Exhaust...
I am looking to buy an Apexi n1 on my eclipse gs. No boost at the time now. Running N/A. Would a 2.5 pipe, 4.5 tip work? Is there any difference between the sound of a 3.0 pipe and 2.5 pipe exhaust?
|
|
|
01-21-2008
|
#2
|
R U DTF bro?
Join Date: Aug 2003
Location: Oak Point, TX
Drives: C8 Stingray Z51
Posts: 20,620
|
Re: Suggestions...Exhaust...
A 3" pipe will be a lot louder and more annoying on a N/A DSM. Hell, even a 2.5" is too big.
__________________
Quote:
Originally Posted by Murlo26
I agree with Kracka.
|
|
|
|
01-21-2008
|
#3
|
immune from paybans
Join Date: Oct 2005
Location: West Des Moines
Drives: poorly
Posts: 4,358
|
Re: Suggestions...Exhaust...
Do you plan on running a turbo in the future? If not then 3" is way too much overkill.
I thought the N1 was a turbo exhaust. Isn't it possible to lose power on N/A if it's too big?
|
|
|
01-21-2008
|
#4
|
Wanker
Join Date: Nov 2005
Location: St Paul, MN
Drives: 95 M3
Posts: 1,027
|
Re: Suggestions...Exhaust...
A nice 2.25 inch mandrel bend exhaust would probably be best for that car.
|
|
|
01-21-2008
|
#5
|
Join Date: Nov 2005
Location: Cottage Grove
Drives: Silver '02 IS300, Blue '06 Suzuki SV1000
Posts: 5,293
|
Re: Suggestions...Exhaust...
Quote:
Originally Posted by slowboy
Isn't it possible to lose power on N/A if it's too big?
|
Yeah, you can. Backpressure is more important on N/A cars, and if you put an exhaust on it that's too free flowing, you'll lose ome backpressure and some hp along with it.
__________________
'02 Lexus IS300
'06 Suzuki SV1000: Back on the road and ripping hard as ever!
|
|
|
01-21-2008
|
#6
|
Join Date: Oct 2003
Location: edward lake
Drives: toaster
Posts: 6,431
|
Re: Suggestions...Exhaust...
2 .25 on a n/a 4 banger is more than enuff
|
|
|
01-21-2008
|
#7
|
Banned
Join Date: Dec 2003
Location: Boulder, CO
Drives: Conquest
Posts: 5,049
|
Re: Suggestions...Exhaust...
Quote:
Originally Posted by Kevin_1G_Drummer
Yeah, you can. Backpressure is more important on N/A cars, and if you put an exhaust on it that's too free flowing, you'll lose ome backpressure and some hp along with it.
|
BAH! Humbug. If you lose power, it will be in the lower rpms, maybe midrange, but you should gain power up top.
2.5 is plenty big.
|
|
|
01-21-2008
|
#8
|
Join Date: Nov 2005
Location: Cottage Grove
Drives: Silver '02 IS300, Blue '06 Suzuki SV1000
Posts: 5,293
|
Re: Suggestions...Exhaust...
^^ Are you sure about that? I don't know if it's the same, but I had a little 50cc pocketbike. When I took the exhaust off, I gained a little low in the rpms, but lost alot up top. Put the exhaust back on, and got my top end back.
__________________
'02 Lexus IS300
'06 Suzuki SV1000: Back on the road and ripping hard as ever!
|
|
|
01-22-2008
|
#9
|
Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
|
Re: Suggestions...Exhaust...
smaller diameter exhausts will yield more torque down low on N /A cars, but kill it and power up top.
-A. Swift
__________________
Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
|
|
|
01-22-2008
|
#10
|
Banned
Join Date: Dec 2003
Location: Boulder, CO
Drives: Conquest
Posts: 5,049
|
Re: Suggestions...Exhaust...
Quote:
Originally Posted by Kevin_1G_Drummer
^^ Are you sure about that? I don't know if it's the same, but I had a little 50cc pocketbike. When I took the exhaust off, I gained a little low in the rpms, but lost alot up top. Put the exhaust back on, and got my top end back.
|
If that was a 2 cycle engine (which I bet it was), they actually do benefit from backpressure, I believe. I know what you are talking about though, my friend's 80cc scooter exhaust broke off at the flange once and we re-welded it and it was faster. Took it off and saw some bumps of metal from welding on the inside of the pipe. The turbulence those bumps caused probably added backpressure and thus, a little more power.
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|