2k2 SE 6-Speed I/H/E 250 HP / 244 ft-lbs
#1
2k2 SE 6-Speed I/H/E 250 HP / 244 ft-lbs
Went to a dyno day today in VA... Got 3 Runs with A/F
This is with Cattmans 3" Exhaust, and I actually put down better numbers then my car with the 2.5"
Run Files are here - http://boredmder.com/dyno/merlyn/
Dyno Run -
Click for larger Image.
This is with Cattmans 3" Exhaust, and I actually put down better numbers then my car with the 2.5"
Run Files are here - http://boredmder.com/dyno/merlyn/
Dyno Run -
Click for larger Image.
Last edited by Merlyn; 04-21-2008 at 12:20 PM.
#7
#10
#12
#17
We tried to get autotune working the night before the dyno and with that a lot of stuttering at idle and bad A/F (The car was sitting at 14.5 then would spike to 18.5 A/F at times) we decided to turn EVERYTHING off on emanage. I am sorta glad we got to run the car without a tune, because we were able to see the effects of the 3" Cattman exhaust.
#19
Holy cow!!!! I didn't think people were laying that good of numbers w/o a tune...I'll be happy to get 245whp after I put on my Cattman Headers and SSIM with my other mods and get the car tuned!!!
#20
For my POS? I think the dyno has limits on how low it can read It's basically stock right now, just a custom 2.5" catback, gutted cat (accidental) and hacked stock airbox (sound, of course). Probably has less power than stock, heh.
Yea, it was a nice surprise to us both...hitting close to (actually above, with the uncorrected numbers) the stock flywheel rating for his car at the wheels with nothing but I/H/E and flywheel. Eh, '04 trans counts too, I guess.
Still, we left the shop very happy with the numbers...
Never heard of that member, and can't find them in the list...link? Just wondering what he had.
Still, we left the shop very happy with the numbers...
Never heard of that member, and can't find them in the list...link? Just wondering what he had.
#22
I only know 9 or 10 org members real names.
#23
#26
Thanks for posting these results. Your performance mods seems to be working, the #s are exactly what I'd expect to see from a VQ35DE with this equipment. My 02 runs about 243whp w/ similar equipment. I've got a stock flywheel, so I lose a little there, and a gen3 header set, which does a bit better than a gen2 set. I've got a 2.5" exhaust, so your 3" catback could have made the difference.
The 3" gen5 Cattman catback is already developed, but there's never been enough interest to take it into manufacturing. I sort of assumed it would only make power on a turbo/sc application, but Merlyn's results seem to contradict that.
Anybody interested? We could have a batch ready in a month, but we'd need to see some expression of interest.
Brian C Catts
Cattman Performance
The 3" gen5 Cattman catback is already developed, but there's never been enough interest to take it into manufacturing. I sort of assumed it would only make power on a turbo/sc application, but Merlyn's results seem to contradict that.
Anybody interested? We could have a batch ready in a month, but we'd need to see some expression of interest.
Brian C Catts
Cattman Performance
#27
Thanks for posting these results. Your performance mods seems to be working, the #s are exactly what I'd expect to see from a VQ35DE with this equipment. My 02 runs about 243whp w/ similar equipment. I've got a stock flywheel, so I lose a little there, and a gen3 header set, which does a bit better than a gen2 set. I've got a 2.5" exhaust, so your 3" catback could have made the difference.
The 3" gen5 Cattman catback is already developed, but there's never been enough interest to take it into manufacturing. I sort of assumed it would only make power on a turbo/sc application, but Merlyn's results seem to contradict that.
Anybody interested? We could have a batch ready in a month, but we'd need to see some expression of interest.
Brian C Catts
Cattman Performance
The 3" gen5 Cattman catback is already developed, but there's never been enough interest to take it into manufacturing. I sort of assumed it would only make power on a turbo/sc application, but Merlyn's results seem to contradict that.
Anybody interested? We could have a batch ready in a month, but we'd need to see some expression of interest.
Brian C Catts
Cattman Performance
#28
Viewing the actual data of the 2 run files... just some random RPM's these are the comparison HP / Torques...
2.5 Inch Exhaust
4,500 RPM 191.88 HP 223.94 Torque
5,000 RPM 216.38 HP 227.29 Torque
5,500 RPM 231.13 HP 220.72 Torque
6,000 RPM 237.81 HP 208.17 Torque
6,500 RPM 221.92 HP 179.33 Torque
3.0 Inch Exhaust
4,500 RPM 209.32 HP 244.30 Torque
5,000 RPM 232.01 HP 243.71 Torque
5,500 RPM 244.90 HP 233.87 Torque
6,000 RPM 244.15 HP 213.72 Torque
6,500 RPM 239.31 HP 193.39 Torque
2.5 Inch Exhaust
4,500 RPM 191.88 HP 223.94 Torque
5,000 RPM 216.38 HP 227.29 Torque
5,500 RPM 231.13 HP 220.72 Torque
6,000 RPM 237.81 HP 208.17 Torque
6,500 RPM 221.92 HP 179.33 Torque
3.0 Inch Exhaust
4,500 RPM 209.32 HP 244.30 Torque
5,000 RPM 232.01 HP 243.71 Torque
5,500 RPM 244.90 HP 233.87 Torque
6,000 RPM 244.15 HP 213.72 Torque
6,500 RPM 239.31 HP 193.39 Torque
#29
Here's a quick visual of what we gained over last time (as always, click for the full-res):
Horsepower
Torque
The blue run in both was the best run out of the old two (239/229), vs the 3 runs from this weekend.
I altered the scaling on both so as to not have dead space on the charts.
Peak differences seem to be ~20whp, ~24wtq, at a quick glance.
Both the new and the old runfiles can be found here.
Horsepower
Torque
The blue run in both was the best run out of the old two (239/229), vs the 3 runs from this weekend.
I altered the scaling on both so as to not have dead space on the charts.
Peak differences seem to be ~20whp, ~24wtq, at a quick glance.
Both the new and the old runfiles can be found here.
Last edited by pmohr; 02-13-2009 at 11:54 AM.
#31
#32
Hmm, not a bad idea, but considering all the noise reduction I've done (boat load of resonators) it might be worth it, these cars have a tendency to work (react well to certain mods) using items 'outside the box'.
#35
Damn thats crazy!! I guess this contradicts what most will say that a 3" exhaust on a NA VQ will loose too much power and only gain it in the top end.
Hey Brian, any development for the cattman 3" for the 4th gen? Or maybe a 3" ID Muffler?
Hey Brian, any development for the cattman 3" for the 4th gen? Or maybe a 3" ID Muffler?
#36
Well, the way I personally look at it, we have a single exhaust... in the 350z aftermarket world... you have true dual 2.5" exhausts, that are gaining power, so you simply have 2.5" per 3 cylinders... where as we have 2.5" per 6... so yea, I could easily see how it could be done... I would love to put 2.5" exhaust back on the car and then take it off and put 3" just to make sure 100% that this was 100% from the exhaust, but I personally can't think of anything else we have changed... had intake header and exhaust on the first dyno, along with emanage, same trans, same clutch, same flywheel, same tires... emanage was not tuned in any of the runs... so
#39