i just want to see how much had to be cut out...then i will buy them and take pics to add to this thread.

 

u dont have 2 cut much at all....jus the subframe about a 1/2 inch and relocate the rear o2

 

pulsargts posted them 4 me cause it wouldnt upload from my comp

 

but yes i am gonna get a S-AFC cuz i was runnin super lean at 5k.....it was at 14.2...yikes

 

I was wondering what was up with that dip. I thought these cars normally run real rich with headers?

 

I'm pretty impressed with the dyno results considering the price. You could use the money saved to get them White Lightning coated to bring out their true potential.

 

something i thought about.... do the 5th gens and the 4th gens share the same crossmember? or at least similar ones? I wonder what differences if any would come from putting this on my 4th gen.

 

what exactly is that... is it the same thing as getting them powder coated i believe?

 

http://www.swaintech.com/store.asp?pid=10969

 

yes they do and 4th gen headers fit on a 5th gen, I have 99 cattman gen 3's on my 03 with EGR port plugged

 

where's the torque curve on the dyno slip?

 

Now I can sleep happily ever after! Very nice numbers.

 

It wasnt present on the run files. I was hoping there was a way to get it to show with the program.

 

Different part #'s but similar dimensions.

 

Can you export the power vs. engine speed to excel?

Torque(lbf*ft) = Power(hp) x 5252/(engine speed(rpm))

 

You sure can. Run#1 was the strongest run with SAE# 247whp/229wtq. Both peak numbers of course.

 

The torque data can be made to appear on the right axis - click on the right axis of the graph where it is currently saying "None" and select "Torque". You can also change it to two graph view and show the AF on the graph below. I have received datdude20's files and can post the full charts later.

I'll also post a comparison between these and my Cattman Gen 2s.

Btw, datdude20, please post what other mods you have again. Sorry if I missed it.

 

And all I'll say now is that the peak numbers can be misleading, but these are still a decent alternative with good potential considering how much they are.

 

Cool, I was hoping someone familar with the program could chime in on how to get everything to show.

 

Sweet, that will be cool. If anyone has runfiles for the Gen III's as well, do post!

 

datdude20, based on the gear ratio and engine speed data, it looks like you dynoed in 3rd and all my dynos (and all the others I have from other Org people) are in 4th. I don't like really like the comparison, given that as it is, two different cars on two different dynos on two different days are already enough for many to discount the value of the comparison.

 

Reminder. For the good of our .org site.

 

What about that video?

 

Respectfully disagree. This is just like any other comparison between two products; just like we've compared struts, springs, bulbs, everything. I think we have every right to compare the two, and just because Cattman is a site sponsor shouldn't change that.

In the past, I'm sure there have been many Cattman vs. Hotshot dynos posted as well. I'm also almost certain that Catts isn't going to run away just because some eBay company is selling cheap headers for the Maxima now. He's shown that he can stand by his products, all of which have proven to be good products for these cars anyway.

 

Here's DatDude20's dyno with torque, AF, etc.

Just a footnote - I'm also almost certain these runs were done in 3rd gear.



I've attached it too in case the picture doesn't come out right.

 

Not an expert with dyno graphs yet but isn't a 14 A/F way lean for untuned headers? I thought they make the car run rich, this is the opposite. And what's with the tq? Seems a bit on the low side.

I know I'm running rich at the moment since I'm untuned with my Cattmans, I can smell the fuel from my exhaust.

 

I noticed the a/f earlier too, I think he is running a gutted cat iirc too so not sure whats up with the ratio. The TQ maybe off from the gear he dyno'd in but I gotta believe he had them dyno in 4th. Also note that peak power doesn't come till 6.25K.

 

Look at the same graph below but for the bottom axis changed to Speed instead of RPM - it only hits about 87 mph at redline. If he was in 4th, he'd have hit about 115 mph at redline. Even the gear ratio numbers are nowhere near what a 4th gear run should be.

 

Yeah, you are right. I never paid attention to that before, I think that was the first axis I changed to rpm when I opened the file. Does that explain the tq numbers at all and the peak being so far to the right? Even with other SSIM cars Ive seen they still peak around 5.5k and plateau.

 

I'd think anyone with the stock IM would peak around 5500-5700 rpms or so while the SSIM equipped would peak at 6000+ rpms. At least, that's what it appears from the small sample of runfiles I have.

 

Where is the 52xx hp/tq cross over?

 

That's probably because I didn't use the same scale for the left and right axis. I can repost that later when I get home. Or I can email you the runfiles and you can do it.

 

Okay, only because I like you Kev.

 

Doesn't the winpep software compensate for which gear the run was done in? I know that when I post my old dyno runs with the stock 6mt, and then put a new run into the graph with the 06 6mt I get a little box popping up telling me that the ratios are different. IIRC the guy who did my dyno said it doesn't really matter which gear you run in. But most people prefer the 1:1 ratio because it take a little longer for the run. A first gear run would just happen too quick. 4th gear at 1:1 or closer gives you more curve to look at

 

You could be right, but I didn't find a definitive answer, which is why I was holding the comparison back. WinPEP will show the gear ratio, but I'm not sure what it does to compensate, if anything.

 

I agree with you there.

I think what he was trying to get at though (The way i see it also) is that this shouldnt turn into a debate/argument on what is the better product. Comparing them is not a problem and I encourage that. But it shouldnt be a shouting match about opinions as to which is the better product.

I think i worded that correctly.

 

Did you get any sound clips yet?

 

FYI, i will be purchasing these headers in about a week or two, and ill have before and after dynos(on the same dyno). i have basically the same setup....

 

still awaiting a vid.

 

+1