Removing pre cats on 02 3.5
01-27-2005, 07:12 PM
#1
Removing pre cats on 02 3.5
I've heard that it may be possible to remove the pre cats on the 02 Maxima by using the exhaust manifolds from a specific 00 or 01 maxima.
On previous maximas the pre cats were located in the y-pipe. On the 02+ maxima they're located in the exhaust manifolds and the aftermarket y-pipes don't eliminate them.
Does anyone know about this? If so, What type Maxima do the manifolds come from? Also, which y-pipe would I need? 5th gen, 5.5 gen or neither?
On previous maximas the pre cats were located in the y-pipe. On the 02+ maxima they're located in the exhaust manifolds and the aftermarket y-pipes don't eliminate them.
Does anyone know about this? If so, What type Maxima do the manifolds come from? Also, which y-pipe would I need? 5th gen, 5.5 gen or neither?
01-29-2005, 02:08 PM
#4
Originally Posted by E55AMG2
Emax once used a 95/96 manifold....but why do that when you can get headers?
01-31-2005, 12:32 PM
#7
I have headers w/ stock cat-back, and it's very quiet, you can't even tell they're on.
I think Emax's best dyno was 228 WHP, that was with those ex. manifolds and a 3.0 y-pipe.
Nm here it is from the dyno slips section
--------------------------------------------------------------------------------
229whp 230wtq
2002 6spd with 12K miles and stock 17's, the CF was .99.
Power Mods
Stillen cali Y-pipe conversion with 2000 fed-spec manifold swap
Franken intake
RT cat
UR UDP
Greddy Cat-back exhaust
I think Emax's best dyno was 228 WHP, that was with those ex. manifolds and a 3.0 y-pipe.
Nm here it is from the dyno slips section
--------------------------------------------------------------------------------
229whp 230wtq
2002 6spd with 12K miles and stock 17's, the CF was .99.
Power Mods
Stillen cali Y-pipe conversion with 2000 fed-spec manifold swap
Franken intake
RT cat
UR UDP
Greddy Cat-back exhaust
02-05-2005, 06:41 AM
#8
Senior Member
Join Date: Jan 2004
Location: West Henrietta, NY
Posts: 831
Wow. Are there actual physical differences in the manifold between 5th and 5.5 gen? I think SR20DEN did this. If there is are no physical differences besides the precats in the manifold they can be gutted and O2 simulators can be added on.
Got any info SR20??
Got any info SR20??
02-09-2005, 08:46 PM
#13
Originally Posted by mdloops
What is the point of eliminating the precats if you car wont make more power?
If you get headers: you will make a lot of power and eliminate the precats
replacing the manifold: make a little power and eliminate the precats
Thread
Thread Starter
Forum
Replies
Last Post
MaxRPM6
New Member Introductions
0
09-11-2015 06:56 PM