Dan Martin

Nice run Johnny!

Xtremespeed2102

man, i wanna hear these things in person... we need another otown meet, with TSXs with exhaust

rmpage

The 5AT shift points top out at 7,000 RPM. The only time you can advance all the way to 7300 (or 7600 if you have the Hondata reflash) is if you are in sportshift mode.

DateTSX

I'm just scared if something happen to it if I redline it. I spend 15,000 miles pampering her. I dont 'think I ever went pass the 4,000 rpm mark before! I just hate to see something mess up later on. Haha some say I take care of my car more than my g/f

tonka_146

next otown meet i'll show up ... you can hear mine .....i love them man...they sound soooooo great!!!

tonka_146

heres a pic of mine without the body kit

TSX 3Pedal

tonka...
you have the Tanabe cat-back also?

Xtremespeed2102

oohh very good... well im living oncampus at UCF now, so anyhting nearby is definaetly not a problem... but then agian we get back into that whole whos going to organize it and where

GSGOMEZ

Nice!!!!!!!!!!

dzuy

set one up and i will be there.

Viking

Congrats! Awesome run!

CJams

Sounds killer Johnny! 10:34? Does the wife know you were out playing that late or did you push the TSX out of the drive way again?

sauceman

Awesome run Johnny! Get it validated at the track.

And don't be scared to do full throttle quick shifts. The car can and will handle it.

JTso

iTrader: (2)

The chamber is not connected directly to the inlet pipe like the one in your picture. If you are looking from the exhaust tip, the internal camber goes all the way back and terminates a couple of inches before the end of the muffler. I can't tell if there's another chamber connects to the inlet pipe though...

Thanks! I'll try it at the track. I imagine it can be intimidating with other people watching. Oops, mis-shift again!

I've tried quick 1st to 2nd shift before, and it usually ends up grinding a little as it enters in second. Almost seems like the synchro is off or something... but I'll try it again.

The test runs were actually done earlier than I normally would. I normally test cars in the middle of the night, sometimes 1 or 2 in the morning when no one else is around. As you can see in the video, I shut down immediately when I saw traffic.

JTso

iTrader: (2)

Just got back from the dyno for some numbers...

This is a comparison with the big bored TB project (the last real gain). As you can see, there isn't much more peak gain but it's where the usable horsepower and torque that really matters. There is a spike near the end of the torque curve so the peak torque is not 170.77 (I wish) but more like 162.5 at 4300 rpm. I'm happy with the performance from the custom cat and Tanabe exhaust. The car really pulls and drives like a dream. Judging from the hp and tq curves, one might think I just got another Hondata reflash!

drunkenbuda

WoW, makes me want to buy the TEin coilovers fast just so i can come see your ride, LoL!

CobaltForge

So JTso, how much did this setup cost you? And do you think the same gains could be gotten out of a different catback (GReddy, Comptech, Fuji) paired with a custom cat?

JTso

iTrader: (2)

I spent about $2200 on engine performance mods (all bolt-ons external mods). A high flow cat is always a good idea to unleash the potential from a catback system, but don't forget the header is also important. It's difficult to speculate if similar gain can be obtained from a different setup, as I have not seen any independent dyno results from any other catback systems.

kaikai114

linkie no workie =|

JTso

iTrader: (2)

Sorry, too many people didn't right click and save the file, and causing some bandwidth issue. Links are down until I can find some place else to host them again.

Edit: I'm currently looking at Google video. They allow unlimited size of upload and storage but they will not be full screen mode , so I should have the links up soon.

https://upload.video.google.com

CobaltForge

Thanks for the info JTso. I was actually just wondering how much the custom catback and exhaust cost you (not including the header, etc.). I was thinking about going the header route first. Would you recommend that first vs. the custom high-flow cat & exhaust route?

tonka_146

sure dooo... got mine before jt

tonka_146

just me personally i wanted the exhaust first.. the header will come next week from excelerate..

rmpage

I'm trying to recompress those vids into something a bit smaller using the XviD codec (wouldn't lose any perceptible quality) but having difficulty. When I do, I'll host them.

Zasker1

Ug, I want to see this

rmpage

Couldn't get recompression to work, so here are the vids in original form.

RIGHT CLICK, SAVE TARGET AS. IF YOU DO NOT DO THIS IT USES MUCH MORE BANDWIDTH. THIS IS THE REASON WHY JTSO'S HOSTING CRAPPED OUT.

Nighttime interior clip
0-60 clip
1/4 mile clip

JTso

iTrader: (2)

Thanks rmpage for hosting the files! I have updated the original posts pointing to your links.

rmpage

No problem mang.

The reason why I obsess over internal muffler construction is because everything I've read and learned about exhaust systems says that baffled mufflers are really bad for a performance exhaust. The objective of designing a performance catback is to take those pulses from the engine and allow them to flow freely out into the atmosphere without getting too messed up, because if they're left unmolested the rarefaction (low pressure area) behind each compression actually pulls the next compression (high pressure area) down the pipe, just like how intake manifolds and headers work. So when you put a baffled muffler at the end of the pipe, it totally ruins the uniformity of the pulses, so that added advantage is lost.

There will still be benefits of reduced backpressure, but that's only part of the problem (just like with a header). I think the GReddy Evo2 is the only catback to utilize free flowing mufflers.

JTso

iTrader: (2)

rmpage, here's an idea for ya. How about utilizing an exhaust cutout device similar to the one below, and place it where the Y pipe is on the TSX. Connect one side to a normal quiet type muffler for normal driving. Connect the other side to a straight through type muffler for performance. The control will be managed by an adjustable pressure/vacuum switch connects to the intake manifold. When the engine hits atmospheric pressure or whatever the adjustment is on the pressure/vacuum switch, the exhaust cutout is energized and routes the exhaust through the straight through muffler. This way the TSX still retains the dual muffler look but with the benefit of a single muffler setup. It would be very easy to do.

Btw, you might need two cutout devices. When one opens, the other closes.


Pressure/Vaccum switches

drkangel348

Impressive.

drkangel348

Where could I get my hands on the Tanabe exhaust for the TSX? Johnny you've got me interest in buying one now.

tonka_146

got mine from www.hpautoworks.com ... everything was 714 shipped to jax fl

rmpage

Yep, thought about cutouts. Actually the way I had considered doing it was considerably simpler. It was to take advantage of the "fake" dual exhaust the TSX has and have one side with a quiet muffler, and the other side with a race muffler. The cutout would be manually operated via a switch on the dash or some such. The trick would be making them look somewhat similar, but I think it could be done.

Activation via manifold vacuum would be really kickass though. Such a circuit could be enabled via a dash-mounted switch.

Hmm...

JTso

iTrader: (2)

rmpage, this is for you . Perhaps wire it to the DBW circuitry.

rtlltj

someone host these files

rmpage

Shit, sorry, I cleaned out the folder and deleted them. I'll upload them again.

Oh and that video is awesome.