How are the new Cattman Headers?
10-06-2005, 08:11 PM
#81
Originally Posted by rbrown81
350 for the header install, another 50 for the wire extenders for the 02 sensors.
Pretty good deal.
Just out of curiousity. I got a little smoke under the hood after I had the install done, and for about 5 minutes afterwards. Normal? There was a little radiator fluid splashed inside... Could that have caused it?
Pretty good deal.
Just out of curiousity. I got a little smoke under the hood after I had the install done, and for about 5 minutes afterwards. Normal? There was a little radiator fluid splashed inside... Could that have caused it?
I think some smoke/odor is common with most new exhaust parts....
10-06-2005, 08:12 PM
#82
Supporting Maxima.org Member
iTrader: (15)
Join Date: Nov 2004
Location: Clifton Park, NY
Posts: 4,035
Originally Posted by rbrown81
Im not really sure how much I like the cattman muffler. Seems a little too Rice Rocket for me... I felt like everyone was looking at me. Asides from that, Jeff did a FANTASTIC job. I would reccomend maximum tuning for any tuning job for your max! Thanks Jeff!
It sounds much more ricey IN the car. have a friend drive your car while you drive behind him so you can really hear how it sounds.
10-06-2005, 08:14 PM
#83
Originally Posted by upstatemax
It sounds much more ricey IN the car. have a friend drive your car while you drive behind him so you can really hear how it sounds.
But I dont trust any of my friends with my car... Lol Puppet - The somebtch pulls hard. Real hard. The headers are
Im going to see if I can arrange some Dyno time soon
10-06-2005, 08:18 PM
#84
Originally Posted by eng92
EGR Exhaust Gas Recirculation - takes a portion of your exhaust gases and routes them back into your intake. This lowers NOx (Oxides of Nitrogen) emissions by lowering combustion temperatures.
95 thru 01 use an external EGR valve and tube to connect the exhaust and intake systems to carry out this function.
I believe 02 and 03 use valve timing to carry out the EGR function.
95 thru 01 use an external EGR valve and tube to connect the exhaust and intake systems to carry out this function.
I believe 02 and 03 use valve timing to carry out the EGR function.
10-06-2005, 08:19 PM
#85
Test pipe- especially a non-resonated one will make your exhaust sound louder and raspier. I switched from my busted Custom Maxima test pipe (which was resonated) to Warpspeeds (which is not resonated) and sound levels greatly increased and got really raspy with Greddy EVO1 and HS headers on my 01 Maxima. I think I blew all the baffling or sound absorbing material out of the EVO1 cause it was quiet and got louder and louder as days went by.
I have a Mossy exhaust system on my Max (same as Cattman, same company makes both) and it sounds awesome, doesn't rust and fits great. Tone of the exhaust is very tolerable and only gives out sounds when U push the engine hard. Its deep, and sounds like it means bussiness- puts 350Zs and G35 exhaust notes to shame. I love my HS header/Warpspeed testpipe/Mossy exhaust.
I have a Mossy exhaust system on my Max (same as Cattman, same company makes both) and it sounds awesome, doesn't rust and fits great. Tone of the exhaust is very tolerable and only gives out sounds when U push the engine hard. Its deep, and sounds like it means bussiness- puts 350Zs and G35 exhaust notes to shame. I love my HS header/Warpspeed testpipe/Mossy exhaust.
10-06-2005, 08:27 PM
#87
Originally Posted by Larrio
01 cali-specs do not have that function, ours are more similar to the 02+
10-06-2005, 10:29 PM
#90
Originally Posted by rbrown81
350 for the header install, another 50 for the wire extenders for the 02 sensors.
Pretty good deal.
Just out of curiousity. I got a little smoke under the hood after I had the install done, and for about 5 minutes afterwards. Normal? There was a little radiator fluid splashed inside... Could that have caused it?
Pretty good deal.
Just out of curiousity. I got a little smoke under the hood after I had the install done, and for about 5 minutes afterwards. Normal? There was a little radiator fluid splashed inside... Could that have caused it?
You need wire extenders??? I have a '97 with a VQ35, same exhaust manifolds though, and the wires for the 02 sensors went in fine on the Budget Y pipe, I hope they go in ok with the new headers.
10-07-2005, 06:01 AM
#92
Originally Posted by HarrisH
You need wire extenders??? I have a '97 with a VQ35, same exhaust manifolds though, and the wires for the 02 sensors went in fine on the Budget Y pipe, I hope they go in ok with the new headers.
The problem is, the 02 sensors on the manifolds are Right at the top of the OEM manifolld. On Brian's new headers, the bung for the sensor is located at the 3-1 point of the manifold, which is right by the bend near where it joins the downpipe. Apparently this is for a better comparitive reading between the pre cat o2- sensor and the post cat sensor. Also, my Cattman catback needed an extender.
Let me tell you, I was AMAZED at how heavy the old **** was. The manifolds, the Pre cats (AMAZING!). Ugly old cast iron junk. My car has lost like 30 lbs!
I actually got a fed spec Cattback by accident, and I need to either drill a hole for the 02 bung or just get an 02 Simulator. I have a 02 sensor sitting in my house at the moment, and surprisingly Im not pulling a code.
*shrugs*
Just lucky!
10-07-2005, 06:06 AM
#93
Originally Posted by 2kayznmaxima
Just pushing out these mods eh Rich? Haha. I NEED to see/hear the new toys, we should meet up sometime...
Shure man! Anytime you want to! We'll set up a time and Nilesh can come see if his stereo is louder than my car at WOT
10-07-2005, 06:12 AM
#94
Originally Posted by rbrown81
Yes, I have an 03 Cali Spec
Also, my Cattman catback needed an extender.
I actually got a fed spec Cattback by accident, and I need to either drill a hole for the 02 bung or just get an 02 Simulator. I have a 02 sensor sitting in my house at the moment, and surprisingly Im not pulling a code.
Also, my Cattman catback needed an extender.
I actually got a fed spec Cattback by accident, and I need to either drill a hole for the 02 bung or just get an 02 Simulator. I have a 02 sensor sitting in my house at the moment, and surprisingly Im not pulling a code.
What "extender" does your catback need?
I don't think that there are Cali or Fed spec cat-backs.... they are all the same, aren't they?
When you say drill a hole for the O2 bung in the catback, I think you are referring to the downstream O2 sensors that would either have to be extended and bunged after the main cat or alternatively left dangling with an O2 simulator wired in. Either method is pretty standard with header installs on these cars.
10-07-2005, 06:25 AM
#95
Ok so then my question is. I have a FED SPEC '97 with a VQ35 essentially the exhaust manifolds are the same as on any 3.0 Motor FED SPEC, cali spec I'm not to sure about. The original o2 sensors that were on the original 3.0 motor with the budget y pipe went on fine with the VQ35, no extension of wiring needed. So since my car is a fed spec will the O2 sensors go on fine without the need of wire extenders?
10-07-2005, 07:36 AM
#96
Originally Posted by Puppetmaster
All 02-03s are Cali spec.
What "extender" does your catback need?
I don't think that there are Cali or Fed spec cat-backs.... they are all the same, aren't they?
When you say drill a hole for the O2 bung in the catback, I think you are referring to the downstream O2 sensors that would either have to be extended and bunged after the main cat or alternatively left dangling with an O2 simulator wired in. Either method is pretty standard with header installs on these cars.
What "extender" does your catback need?
I don't think that there are Cali or Fed spec cat-backs.... they are all the same, aren't they?
When you say drill a hole for the O2 bung in the catback, I think you are referring to the downstream O2 sensors that would either have to be extended and bunged after the main cat or alternatively left dangling with an O2 simulator wired in. Either method is pretty standard with header installs on these cars.
The pipe only had one bung for the downstream 02 sensor. Im going to purchase a simulator for the other one.
10-07-2005, 03:23 PM
#97
Cali-specs have to move two o2 sensors behind the main cat, while the fed specs only need to relocate one. The difference in hte exhaust is in the B-pipe only. If you recieved a fed-spec B-pipe you will need to have a second o2 sensor bung welded on. You can get this done for around $50 or so if you look around.
10-07-2005, 05:20 PM
#98
Wait what???????????? I'm so lost dude.
The headers contain 2 manifolds, and the y pipe. Why would I touch anything AFTER the cat. convertor??? There's only 2 O2 sensors that would go on the y pipe, or the headers themselves right?
The headers contain 2 manifolds, and the y pipe. Why would I touch anything AFTER the cat. convertor??? There's only 2 O2 sensors that would go on the y pipe, or the headers themselves right?
10-07-2005, 05:54 PM
#100
wait the new gen2 headers are specifically designed for the 3.5L? I know the gen1 headers were a 3.0L design...and sr20den pioneered the gen1s and found out it fits the 3.5 without any modifications
10-07-2005, 06:34 PM
#101
Supporting Maxima.org Member
iTrader: (15)
Join Date: Nov 2004
Location: Clifton Park, NY
Posts: 4,035
Originally Posted by MaximaPolak
Why would they make an EGR pipe on the headers if 3.5s don't have one. They made it FOR the 3.5.
because if you put on an EGR tube you can market the headers for both 3.0 & 3.5's.... all a 3.5 will have to do is plug the EGR and Cattman more than doubled its market.
Makes sense to me...
10-07-2005, 09:09 PM
#103
Originally Posted by HarrisH
Wait what???????????? I'm so lost dude.
The headers contain 2 manifolds, and the y pipe. Why would I touch anything AFTER the cat. convertor??? There's only 2 O2 sensors that would go on the y pipe, or the headers themselves right?
The headers contain 2 manifolds, and the y pipe. Why would I touch anything AFTER the cat. convertor??? There's only 2 O2 sensors that would go on the y pipe, or the headers themselves right?
On a stock Cali spec, 2 sensors (front) are before the pre-cats and 2 are after (rear), this allows measurements of the difference in the exhaust gases before and after the precats. With headers, there are still bungs for the front sensors on the manifolds, but you're eliminating the pre-cats (so there are no bungs for the downstream/rear sensors), so in order not to throw a CEL, ya need to extend the rear O2 sensors after the cat, so the ECU thinks that the pre-cats are still there or still "working".
An alternative is to wire an O2 simulator in to trick the ECU (and leave the rear O2 sensors tied up and dangling somewhere), thus doing away with the need to extend the wires back past the cat.
If you're gonna be messing with all this, get to know this diagram well:
10-08-2005, 01:54 PM
#104
I did 1 wire extender for my first downflow 02 sensor. Didnt have the bung in the b-pipe for my 2nd one so I decided to get an 02 simulator and save me some time.
I am dying for it to stop effin' raining in Jersey so I can really test out the car. If I nail the throttle in 3rd at around 45, I can still get the tires to break loose in the wet
A question to all : There seems to be some sort of gurgling/popping/rattling sound coming from the exhaust, but only when I round sharpish corners at med-low speed. Is this a noise that is more prominent because the pre-cats are not there or am I running too rich? Might be a regular sound with headers, just not sure atm.
k
I am dying for it to stop effin' raining in Jersey so I can really test out the car. If I nail the throttle in 3rd at around 45, I can still get the tires to break loose in the wet
A question to all : There seems to be some sort of gurgling/popping/rattling sound coming from the exhaust, but only when I round sharpish corners at med-low speed. Is this a noise that is more prominent because the pre-cats are not there or am I running too rich? Might be a regular sound with headers, just not sure atm.
k
10-08-2005, 02:00 PM
#105
Originally Posted by rbrown81
I did 1 wire extender for my first downflow 02 sensor. Didnt have the bung in the b-pipe for my 2nd one so I decided to get an 02 simulator and save me some time.
I am dying for it to stop effin' raining in Jersey so I can really test out the car. If I nail the throttle in 3rd at around 45, I can still get the tires to break loose in the wet
A question to all : There seems to be some sort of gurgling/popping/rattling sound coming from the exhaust, but only when I round sharpish corners at med-low speed. Is this a noise that is more prominent because the pre-cats are not there or am I running too rich? Might be a regular sound with headers, just not sure atm. k
I am dying for it to stop effin' raining in Jersey so I can really test out the car. If I nail the throttle in 3rd at around 45, I can still get the tires to break loose in the wet
A question to all : There seems to be some sort of gurgling/popping/rattling sound coming from the exhaust, but only when I round sharpish corners at med-low speed. Is this a noise that is more prominent because the pre-cats are not there or am I running too rich? Might be a regular sound with headers, just not sure atm.
k
10-08-2005, 02:04 PM
#107
10-08-2005, 02:10 PM
#108
Originally Posted by steven88
What kind of sound is it? Does it sound like something banging against something? If so, you might need to add aftermarket exhaust hangers so the piping won't bang against the two cross members....If thats not your case, then it is very normal to "gurgle" after adding full exhaust...I'm running catless 2.5" piping all the way to the muffler...and the vq35 loves to let off a mean POP when the throttle is let off...
10-08-2005, 02:11 PM
#109
Originally Posted by steven88
10-08-2005, 02:22 PM
#110
Originally Posted by rbrown81
Hmm, now heres a thought. Is the ECU smart enough to recognise differences beetween sensors? because the Sim sensor reading will be different to the sensor I actually have sitting in my b-pipe
I noticed you only have one o2 plugged into the bpipe becuz you didn't have the other bung welded one....where is this o2 sensor hanging at right now?
The ECU won't be smart enough to set off a SES light...I've had both sensors simulated for quite sometime now and no SES....as with many other members on this forum
10-08-2005, 02:26 PM
#111
Originally Posted by rbrown81
Hmm... It is possible. It might be banging, but it sounds like it is coming from the area of the downpipe/ cat. because it only occurs when turning. Where can you get these hangers from? And do I need to take off the exhaust to install them.
Another alternative is to add hose clamps around the exhaust hangers to raise the piping a few MMs...this is what I did becuz I was too lazy to buy aftermarket hangers and taking off my exhaust...plus the hose clamps cost like $3 wheres aftermarket mounts cost alot more than that...
10-08-2005, 02:42 PM
#112
Okay, My 2nd 02 sensor is sitting in my loungeroom at the moment
I just ordered the sim from the website. I will connect the sim to the sensor and leave it in my engine bay instead of running another wire extender.
Adding the hose clamps sounds like the way to go, but how do you go about doing this. Do you think I could pull it off with my ramps? Or will I need to put the car on a lift?
Steve, from the way you have described it I am pretty sure its the 1st crossmember that is causing the issue.
I just ordered the sim from the website. I will connect the sim to the sensor and leave it in my engine bay instead of running another wire extender.
Adding the hose clamps sounds like the way to go, but how do you go about doing this. Do you think I could pull it off with my ramps? Or will I need to put the car on a lift?
Steve, from the way you have described it I am pretty sure its the 1st crossmember that is causing the issue.
10-08-2005, 02:45 PM
#113
Puppet, you're absolutely right about the cali-spec 2k's. The fed-specs have only one 02 sensor after the pre-cats, therefore you only have to move one sensor. If you have cali-spec you should really get a dual channel o2 sim and use the o2 sensor to just plug the hole.
10-08-2005, 07:04 PM
#115
Originally Posted by MadMaxNH
Aren't there two ports on the Cattman B-pipe for the sensors?
10-08-2005, 07:32 PM
#117
Originally Posted by Puppetmaster
I'll try to explain this, but those who know better, please let me know if I'm right or wrong here.
On a stock Cali spec, 2 sensors (front) are before the pre-cats and 2 are after (rear), this allows measurements of the difference in the exhaust gases before and after the precats. With headers, there are still bungs for the front sensors on the manifolds, but you're eliminating the pre-cats (so there are no bungs for the downstream/rear sensors), so in order not to throw a CEL, ya need to extend the rear O2 sensors after the cat, so the ECU thinks that the pre-cats are still there or still "working".
An alternative is to wire an O2 simulator in to trick the ECU (and leave the rear O2 sensors tied up and dangling somewhere), thus doing away with the need to extend the wires back past the cat.
If you're gonna be messing with all this, get to know this diagram well:
On a stock Cali spec, 2 sensors (front) are before the pre-cats and 2 are after (rear), this allows measurements of the difference in the exhaust gases before and after the precats. With headers, there are still bungs for the front sensors on the manifolds, but you're eliminating the pre-cats (so there are no bungs for the downstream/rear sensors), so in order not to throw a CEL, ya need to extend the rear O2 sensors after the cat, so the ECU thinks that the pre-cats are still there or still "working".
An alternative is to wire an O2 simulator in to trick the ECU (and leave the rear O2 sensors tied up and dangling somewhere), thus doing away with the need to extend the wires back past the cat.
If you're gonna be messing with all this, get to know this diagram well:
10-08-2005, 11:38 PM
#119
Originally Posted by rbrown81
Mine only came with one. Strange.
10-08-2005, 11:39 PM
#120
Originally Posted by rbrown81
Okay, My 2nd 02 sensor is sitting in my loungeroom at the moment
I just ordered the sim from the website. I will connect the sim to the sensor and leave it in my engine bay instead of running another wire extender.
Adding the hose clamps sounds like the way to go, but how do you go about doing this. Do you think I could pull it off with my ramps? Or will I need to put the car on a lift?
Steve, from the way you have described it I am pretty sure its the 1st crossmember that is causing the issue.
I just ordered the sim from the website. I will connect the sim to the sensor and leave it in my engine bay instead of running another wire extender.
Adding the hose clamps sounds like the way to go, but how do you go about doing this. Do you think I could pull it off with my ramps? Or will I need to put the car on a lift?
Steve, from the way you have described it I am pretty sure its the 1st crossmember that is causing the issue.