Well last weekend I installed my Cattman Gen III Headers/Y-pipe and I was so excited to drive the car but here are some thing I should note:

1. The car sounds like it's really raspy and it is not really that loud at WOT but there is a really loud whistling almost like a turbo. But it's kind of annoying.

2. I am not going to lie, I really feel like these headers were not worth the $850 that I paid for them. I was expecting to get in my Maxima and drive the car and notice some nice gains but instead I get in and feel like I'm driving a Honda Civic and there really doesn't seem like theres a change in power. Now I know that the butt-dyno isn't always accurate so we'll have to see this Saturday when I get the car dyno-tuned...

Now onto the SSIM, the install was easy like I knew it would be, only $160, and I did notice the small gain up top but once again I didn't see anything spectacular.

Now like I said I know butt-dynos aren't always accurate and I should wait til I dyno but I really hope after my tune that the car gets a kick in the rear because right now I am not satisfied at all with how these parts perform. I mean is there anyone else who has put headers on and been disappointed?

I will post my dyno results on Saturday but with the way the car feels I really don't think I will break 230whp...

 

Very dissapointed to hear all that because I'm actually going to install my gen I headers this coming week, if time allows. I'm also sending in my extra upper IM for gut out service. I wonder if it's just your car having any other factors like weight or tuning.

Anyways, I will proceed to do mine and see if I have similar outcomes. If it's just your setup being the problem, we can try to find a common denominator to track things down.

-Peter-

 

Did you reset the ECU? When I put a header on my Accord, I really didn't notice much change until I reset the ECU and within 40-50 miles, the improvement from 3500 and up was very noticable, especially from a freeway roll.

Could just be the ECU has to adjust to the changes in airflow.

 

Hmmmmm, I do not see any dyn'os

 

Sell me the headers.

 

I would guess your A/F mixture is off. After getting the A/F corrected I bet you will feel different?

 

When I first got my headers, I didn't think they added much power and kind of sounded like loud vacuum cleaner. After several days of driving, the car felt a little stronger but never expected the results that I got. I believe at the time I was the first to dyno with HS headers so no one knew what to expect but as it turns out my results were right in line with everyone elses that dyno'd with headers after me.

My point is, wait for the dyno.

Oh, and get rid of the test pipe. It should help with the sound a little.

 

Get rid of the catback you have and it will solve that problem. I had the greddy Evo then got the headers. It was loud but not ricey. But I wanted a little quieter so I went to the cattman catback and couldn't be happier. Whatever you paid to install the headers will cost the same to take out.

 

That exhaust you have is not helping your problem at all.

 

Is it just me or have we been seeing a few of these threads lately?

I don't know what kind of difference you were expecting to feel. I hope you realize you didn't do anything drastic like FI or an engine rebuild... You're dealing with the same animal...

 

I guess this is the flipside of the coin when certain proven mods are discussed and asked about so much over time that they reach epic status and some people inevitably end up disappointed. Like joebangaa just mentioned, they're just bolt-ons.

 

Roger that if you got a potato canon for an exhaust no sht its gonna sound like rice, also you gotta drive around a bit so the ecu relearns for the new intake and exhaust set up

 

my best mod was switching from berk to stock airbox

torque = you can feel the difference

 

It's not dyno tuned, and I'm sure you're running a little rich. Post back once it's tuned, I'll bet your results would be different. It's hard to just slap these mods on and not do some adjustments with the air/fuel. Same settings, different major mods /= more power.

 

Wow, I have the Gen3 headers, and catback and gained 25HP. I noticed the power gains as soon as I left the mechanics lot. Then gained another 15 with the tune. Noticed a huge difference again.

 

Sucks that you do not have a baseline dyno to really prove any gains.

 

from my experience, installing headers makes the engine run rich. tune your A/F.

 

THANK YOU!!!!

Someone had to say it all your impressions are pointless, no tune no care. My AFC reset itself once and my car was so sluggish, but once i tuned it back out, man did it fly.

if you think 850 is not worth the money then your not gonna think anything else is worth the money

 

I've got plenty of low end torque, I ain't telling one what my special setup is, I have more then what I list in my sig.

 

Don't worry Justin. You'll get some good numbers. Call me after you dyno.

 

Well, like previously stated I am going this Saturday to get the car dyno tuned with my SAFC-2...also I think the exhaust is good it's just the 4.5" tip that's making it sound ricey I just ordered the OBX DTM dual tip muffler (I think it's the same as maxspeed96ct had) so maybe that will help with the rice. Also I am glad to hear that some of your cars have ran like crap until the tune so now I will be looking forward to that even more , I will post all the dyno graphs and videos this weekend.

 

neither is the test pipe, my hs headers and cattman c/b sounds so fawking awesome

 

Everyone should arrange a group deal with TS for at least the L-Spec flash so that once tuned with an AFC the ECU won't learn around the tuned parameters.

Get a full exhaust and leave stock mufflers...cheaper, quieter, better TQ, but slightly worse HP.

 

videos please

 

Here is the video of my car that I just took:

RICE RICE BABY!!!

I know it's hard to tell what's going on but the first clip is me just revving it and the last two are me doing some pulls. I took this on my digital camera and it doesn't have night vision so it's kind of hard to see.

 

The link you posted didn't work for me. Try this one.

http://www.youtube.com/watch?v=Z7ybqFfiadY&feature=user

It doesn't sound as bad as you were making it out to be. If you put a cat on there it'll probably get rid of some rasp.

 

honestly its not as raspy as you made it seem its just a higher note. Which will be taken care of with the new muffler you ordered. After the tune you WILL feel the differnce.

 

Don't forget the runfiles.

 

I won't, I should be posting them up sometime Saturday, I am taking it to be done on Saturday morning...also I know this is a but I was wondering if I need to tell the guy anything like what octane I run or how aggresive I want it or what A/F...etc...etc???

 

Tell him you want a flaaaaaat line of 13.5. Do you know what type of dyno it is?

 

No I don't know what kind it is yet...I forgot to ask if it isn't a dynojet will I still be able to post the runfiles??? Also so I should just tell him basically to get the A/F as flat as possible and around 13.5...thanks for the advice man, I appreciate it. Also what do you think of the video, is it RICEY

 

looking for some good numbers from him hey?

 

Sounds good to me.

 

I wouldnt ask that question to the stock muffler and resonator king(nmex)

 

That's why I asked him although I do have the stock intake on right now and I'm lovin' that torque. But tomorrow I'm probably going to buy the autozone special intake...lol I'll just buy a 3" round tube then a maf adapter then two couplers then a filter, then of course I will need a breather for the vacuum, sort of like a berk setup...but not quite

 

About the AFR, i would personally get tuned for maybe a 13.0-13.2 after 4500 its alot safer when driving on the street and during seasonal changes. 13.5 is pushing the envolope which is why im sure he said FLAT because any higher in the wrong ambiant conditions could spell disaster.

 

Maybe it is your rice exhaust?

I have the Gen 2 Headers with Cattman 3" Exhaust, and have had 2.5" from him as well, and the exhaust / header combo is far from ricey...

http://www.youtube.com/watch?v=PbUpwdMbmKU

http://www.youtube.com/watch?v=He6twM-PW68

3" Cattman Exhaust

http://www.youtube.com/watch?v=48f9NVofy_8

and ever since I actually got the 3" bolted on right (without any leaks) it sounds even cleaner and deeper...

 

crap im scared to get gen III headers now

 

Why, because one guy who just put them on is not happy...

When i first got my headers on they sounded way different then a week or 2 later...

here let me try to scare you some more...

[sarcasm]
I personally have had so many problems with my car... it is a problem car.. my butt only feels 100 WHP coming out of my max... it doesn't matter if I am not the end all be all of performance, but I personally think the maxima sucks... [/sarcasm]

Cattman has made some GREAT products, I don't think anyone has ever complained about his work, and I DOUBT that he would produce a 3rd gen header that is not as good as his second gen, if not better... hell I even think he has the 3rd gen headers on his car....

my 2 cents... don't take 1 persons opinion of something and run with it...

Hell I have never taken ANYONES opinion on performance parts for my car, and I am pushing 250 WHP... so obviously I am doing something right

 

Mine is tuned for 14.0 flat. The reason for the flat curve is that these cars respond better to flat curves. Whatever you tune for, make sure it’s flat (12.5-13 if you're paranoid). The leaner it is, the more timing will be added.