Stokeless_TSX

TSX put down 158 whp at Intec racing. with injen intake and fujitsobo exhaust. How is that possible? I mean they must have had the AC on and using 87 octane. I really don't see how a car can be running so bad. Was that anyones car that is here?

dzuy

it's the 19s dude.

TSX Cman

he needs to be specific cuz i dont think hes tlakinga bout his car. dont get it tho. and he doesnt have the fitz exhaust.

Stokeless_TSX

ok read the title worst dyno I have ever HEARD of. I was talking to the guys at the dyno shop today and they told me about this car. ITS NOT MINE lol. Why would I say "they must have had the AC on and been running 87 octane''? I would have said I must have if it was my car...ahhhh Dzuy read it first thats not my car I don't have injen or fitz exhaust. And at the end I asked if the car belonged to anyone here. I wouldn't ask that if it was my car. READ DZUY!!!!! lol :troutslap

xizor

when my engine got heat soaked it retarded the timing, but it still pulled near 170. I hope that wasn't his best run.

JTso

iTrader: (2)

More details needed to determine why the low number. I remember my first dyno with the CAI was pretty low when the engine was relatively new. It has gotten a little better since.

TSX Cman

yea i posted that message to try and clear up that it wasnt his car. due to dzuys 19 inch comment. hope thats not how my car would fair

kangjin

OH NO!

that's my car.



I have no idea why it was so danged low...first time on the dyno, didn't even run to redline...engine had 15k miles, oil was about 5k old (full synth), i think my tire press might have been low, the a/c wasn't on, and I've always run premium from Chevron... maybe I just have the weakest k24 ever?

I was trying to keep it a secret...

I'll be going back to Intec next weekend with JTSo, hopefully to save face...

oh yeah, i've got the stock 17"s too.

oh yeah2 - since then i've changed the oil/filter, rotated/inflated the tires, installed the hondata gasket, tb coolant bypass, and the reflash. if my numbers don't improve dramatically i'm selling my car!

TinkySD

The curve is the right shape...just looks like about 5-10lbf low across the board. I would say either bad gas, or heat soak from the dyno runs. The tsx can easily knock 5-10 lbft off a run if the coolant is too hot or IAT is too hot from the dyno runs. For best reslults make sure you give it some time to cool down between runs!

PS it will be awesome to see a pre and post hondata dyno on a dynojet!

I should also note taht the under 3k curve looks bad... were you at part thropttle until 3k then gunned it?

Stokeless_TSX

Wow that hurts man. You need to change your oil. I change mine every 2.5 -3k. Also change your coolant. Add some redline water wetter. Your power should jump up is it an auto or a 6mt?

kangjin

I flushed the coolant after the gasket install.

It's a 6MT.

and yeah, I didn't gun it until past 3k.

I'll look into getting some water wetter. AND I didn't wait at all between runs, the first one the wheels were slipping (it was raining pretty heavily that day) so these are my 2nd and 3rd runs.

anyway, hopefully we'll see some good next weekend...

xizor

I wouldn't worry too much about the low numbers, I think you experienced the same thing I did. Check out my dyno from last month link. I had 5 runs, first was 180, then the second was right afterwards and you can see its normal till 5500 then throttles back! WTF!#$. Then a run right after that sucked, worse all the way through.

We were trying to figure out what's going on so we let it cool off for a while. Next run 180 again, and then we did another run right after and throttled back again.

I don't know what's happening other than its heat soak or the ECU is retarding the timing. I have a CAI, hondata gasket, TB bypass and oil catch can Next time I dyno w/ the hondata reflash I'm hoping this will go away, but I'll probably try to be more scientific by taking heat readings on the intake.

My throttled numbers are nearly identical to yours, so maybe you'll be making 180hp on a good run too . It sounds like you were experiencing heat soak since your first run was crapped out and the rest were all back to back. Glad I'm not the only one w/ this problem

madmanmax3000

redline water wetter? that sounds nice....what is it

Stokeless_TSX

It makes it so the coolant wont boil when hot. No bubbles means less heat. Usually drops engine temp by about 30 degrees give or take.

cmf

Isn't this the first dyno we have seen with the Injen and Fuji combo? Maybe it has something to do with the exhaust. Correct me if I am wrong, but some mixing and matching of peformance parts can actually cause a loss, rather than a gain.
Maybe you should try a dyno with and without the Fuji exhaust.

madmanmax3000

I'd be into doing that, is it easy to just add in? I'm not good with engine fluids and stuff....i stick to doing my own washer fluid

Maxboost

I have to agree with you JTSO but it's really hard to see how can Injen and Fuji can decrese power. First, we all know that Injen deffinitely produce more power. As for the Fuji, it's actually made for CL7 with K20A WHICH could decrese power since it was made for 2.0L engine. So the Fuji might be too restrictive for our 2.4L.

JTso

iTrader: (2)

I think you meant to agree with cmf. It was cmf that made that statement.

Btw, What is the pipe dia of the Fuji comparing to the stock exhaust?

Stokeless_TSX

Yes water wetter is easy just pour it in....make sure you have room for it though. might have to drain a lil stock fluid out...

kangjin

fuji: 60.5mm to dual 50.8mm I think, I could be wrong.

kangjin

Here's pre-reflash vs. post-reflash. I also added the hondata gasket and coolant bypass between dynos, so take that into consideration.

Numbers still seem really weak to me, might have to hop on the DC Header bus.

Stokeless_TSX

171????thats a normal stock dyno

xizor

that's pretty hardcore to install the gasket while dynoing, but i guess jtso could speed it up

cmf

Maybe you should drop the exhaust if you have the time and run another dyno if the cash is there as well with the stock exhaust. Would be interesting to see if that makes a difference.

JTso

iTrader: (2)

He installed the gasket after the last dyno.

I think there is something holding it back though... clogged cat?

BlackAc036

Maybe your traction control was on... most likely not, but I agree with JTso it might be exhaust related...?

Matell

Hmmm have you got the plots for your Air-Fuel ratio? Maybe you're ECU is running rich for some reason, and hasn't learnt from you configuration how much it can lean the mixture out, giving you back a few more hp....Dodgy O2 sensor maybe?

Just pulling straws.

I've had my Accord Euro on the dyno a couple of times now, and experienced similarly disappointing results. I know the K24A3 has 10hp less than the K24A2 but stock I ran 154.5hp, and with an Injen in CAI mode and throttle body bypass the best I got was 158.3hp. I was a little piffed with that. I compared my Air-Fuel ratio to other Euro dynos, and mine was constantly running a richer mixture.

It's something I'm considering asking my dealer about at my upcomming 30,000km service.

But still it's good enough to run the 1/4 in 15.5sec.

Good luck on sorting it out!

TinkySD

looking at his graph again it might be something with the ignition system. Look how rough and jumpy that curve is compared to all the other tsx dynojets we have. maybe it's bad gas and the knock sensor retarding timing? In all honesty the torque numbers look fine so it's something holding the car back at high rpms. Maybe you need an oil change or to clean your intake?

TinkySD

Maybe you should try bolting the stock exhaust back on to see what happens?

kangjin

I was thinking about going back to the stock exhaust and then running another dyno, but it is starting to get expensive.

also, i changed the oil + filter in between the first set of runs and the last set of runs.

everyone's been offering a bunch of good advice, but really on a motor that's a little over a year old, properly maintained with ~15k miles on it, i wonder if it really is the compression / ignition / other reason?

oh yeah. i got the gas at different stations too, so i doubt that's the cause, unless all of chevron's 92 octane is fouled up now... who knows.

vwong

I really doubt that this is the problem. My baseline dyno was done about 3 weeks ago. At the time, my car was 1 yr. and 8 mos. old and had about 18,500 miles. The dyno result was pretty good, very similar to other stock TSX's. So there might be other factors. Have you tried a different dyno place? Just a thought.