How significant is a free flow cat-back system to a SC’ed Maxima?
12-26-2002, 08:15 AM
#1
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How significant is a free flow cat-back system to a SC’ed Maxima?
Hi all:
I only have a y pipe with my SC for now, after that, it is all stock. Now I want to find out how a free flow cat-back will give more power gain and other advantages. I know one of the advantages is getting lower EGT. From flooring at 65mph/4th gear, I can only get up to 6 psi @ 5500 and my EGT hits 800 already. For instance, I was messing around with an AV6 coupe this morning and I had to let him go because I had to cool my EGT from 870 back down to 700. It was only at 100mph and that uphill road was boiling my EGT. I wanted to have more fun with him but because of too much hot fart, I had to let go of my prey.
With a test pipe and a cat-back, will I expect to see a longer session of boosting? And how will it lower my EGT readings?
2k auto Maxima/V2/3.33/8:1 vortech
happy new year
I only have a y pipe with my SC for now, after that, it is all stock. Now I want to find out how a free flow cat-back will give more power gain and other advantages. I know one of the advantages is getting lower EGT. From flooring at 65mph/4th gear, I can only get up to 6 psi @ 5500 and my EGT hits 800 already. For instance, I was messing around with an AV6 coupe this morning and I had to let him go because I had to cool my EGT from 870 back down to 700. It was only at 100mph and that uphill road was boiling my EGT. I wanted to have more fun with him but because of too much hot fart, I had to let go of my prey.
With a test pipe and a cat-back, will I expect to see a longer session of boosting? And how will it lower my EGT readings?
2k auto Maxima/V2/3.33/8:1 vortech
happy new year
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12-26-2002, 08:35 AM
#2
http://forums.maxima.org/showthread.php?threadid=176357 That thread shows where matt talks about huge gains from the 3" exhaust he plans on having installed soon.
Im thinking if you go free flow 2.5" from the cat back including a high flow or test pipe you can easily pickup something in the 15-20hp range and keep the EGTs a bit lower.
Dixit
Im thinking if you go free flow 2.5" from the cat back including a high flow or test pipe you can easily pickup something in the 15-20hp range and keep the EGTs a bit lower.
Dixit
12-26-2002, 10:11 AM
#3
Originally posted by BigDogJonx
http://forums.maxima.org/showthread.php?threadid=176357 That thread shows where matt talks about huge gains from the 3" exhaust he plans on having installed soon.
Im thinking if you go free flow 2.5" from the cat back including a high flow or test pipe you can easily pickup something in the 15-20hp range and keep the EGTs a bit lower.
Dixit
http://forums.maxima.org/showthread.php?threadid=176357 That thread shows where matt talks about huge gains from the 3" exhaust he plans on having installed soon.
Im thinking if you go free flow 2.5" from the cat back including a high flow or test pipe you can easily pickup something in the 15-20hp range and keep the EGTs a bit lower.
Dixit
I have a 2.5in and it barely clears the heatshields...
12-26-2002, 10:58 AM
#4
thx Dixit and RBa.....I am thinking about 2.5" for my cat back and I doubt a 3-inch system is required for a slightly boosted Maxima. I am interested in getting a B pipe, but I want to keep my stock muffler. I want to find out if Greddy just sell the B-pipe or I have to order the entire thing. (even with just the B pipe, I am not sure if it fits the muffler)
now the problem with the SC is that I cannot get much high end from rolling. The highest boost I got some far is 7psi and that was flooring the car from second gear. At 3rd gear, 65mph, my EGT starts at 500 and shoots up to 800 in no time.
now the problem with the SC is that I cannot get much high end from rolling. The highest boost I got some far is 7psi and that was flooring the car from second gear. At 3rd gear, 65mph, my EGT starts at 500 and shoots up to 800 in no time.
12-26-2002, 11:52 AM
#5
Originally posted by RBa
3in is alittle too big.. And good luck with the rattling heatshields..
I have a 2.5in and it barely clears the heatshields...
3in is alittle too big.. And good luck with the rattling heatshields..
I have a 2.5in and it barely clears the heatshields...
Mine is getting installed in 3weeks..
12-26-2002, 01:45 PM
#6
Originally posted by BigDogJonx
3" has to fit. People have done it and on top of that it is only 1/4" larger in the circumference. It should clear without any problems.
Mine is getting installed in 3weeks..
3" has to fit. People have done it and on top of that it is only 1/4" larger in the circumference. It should clear without any problems.
Mine is getting installed in 3weeks..
01-01-2003, 06:08 AM
#8
Originally posted by BigDogJonx
3" has to fit. People have done it and on top of that it is only 1/4" larger in the circumference. It should clear without any problems.
Mine is getting installed in 3weeks..
3" has to fit. People have done it and on top of that it is only 1/4" larger in the circumference. It should clear without any problems.
Mine is getting installed in 3weeks..
The circumference (measured distance around the outside of a circle) of a 2.5" exhaust pipe is about 7.9" whereas the circumference of a 3" exhaust pipe is approx. 9.5"
Albert
01-01-2003, 10:03 PM
#12
Re: EGT
Originally posted by CBass69187
If I were you, I would ask Kev what he thinks. He had an auto w/ sc for a while and knows tons about it.
If I were you, I would ask Kev what he thinks. He had an auto w/ sc for a while and knows tons about it.
I think it's the narrow stock cat back I have which is holding my hot fart. I will ask him soon.
01-07-2003, 05:16 PM
#17
thought u r doing a 5spd conversion??? I am thinking about fixing the B pipe. If I bought a cat-back....I dunno what to do with the stock one. 
iansw : this is insane! 
13 tq just with a test pipe and cat back......
thx for the dyno
Originally posted by 96shogunmax
I have warpspeed y but car is getting the new auto in it: rolleyes:
BUT Greddy and test pipe are right here waiting on daddy to get home : kiss:
I have warpspeed y but car is getting the new auto in it: rolleyes:
BUT Greddy and test pipe are right here waiting on daddy to get home : kiss:
13 tq just with a test pipe and cat back......thx for the dyno
01-07-2003, 05:18 PM
#18
Originally posted by [maxi-overdose]
thought u r doing a 5spd conversion??? I am thinking about fixing the B pipe. If I bought a cat-back....I dunno what to do with the stock one.
thought u r doing a 5spd conversion??? I am thinking about fixing the B pipe. If I bought a cat-back....I dunno what to do with the stock one.
Read this-------
http://forums.maxima.org/showthread....0&pagenumber=2
01-08-2003, 12:08 AM
#19
Well, 3" piping will work without problems, though like Matt said its not truly necessary if not running more than 10psi. 2.5" is recommended though, it pretty much helps open it up a lot and let it breathe better. As for a Greddy b-pipe from a cat-back kit, it wouldn't work with the stock muffler since the b-pipe length isn't the same as stock, at least for the 4th gen, I know your 5th gen. so I can't really speak all too much about that, but anything is possible at a muffler shop. Your better off just getting a high-flow cat and a Greddy cat-back kit, call it a day and leave the exhaust alone.
01-08-2003, 08:23 AM
#20
Originally posted by [maxi-overdose]
thought u r doing a 5spd conversion??? I am thinking about fixing the B pipe. If I bought a cat-back....I dunno what to do with the stock one.
iansw : this is insane! 13 tq just with a test pipe and cat back......
thx for the dyno
thought u r doing a 5spd conversion??? I am thinking about fixing the B pipe. If I bought a cat-back....I dunno what to do with the stock one.
iansw : this is insane!
13 tq just with a test pipe and cat back......thx for the dyno
Stock Cat.
01-08-2003, 12:25 PM
#21
Originally posted by iansw
No test pipe, only a "uncrushed" 2.25" Warpspeed B-Pipe and Stillen Exhaust, actually. (And of course the WSP Y-Pipe, but that was on before the first Dyno).
Stock Cat.
No test pipe, only a "uncrushed" 2.25" Warpspeed B-Pipe and Stillen Exhaust, actually. (And of course the WSP Y-Pipe, but that was on before the first Dyno).
Stock Cat.
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