JTso

iTrader: (2)

Having a baseline is good. Do you also have the dyno file?

CJams

Yep! I got the file, unfortunately this new fandangled computer I bought for the shop doesn't have a floppy drive. I will have to upload it from home. I got to see some of your dyno's JT. Do you own stock in Intec?

BTW-You're still the reigning TSx champion

They have a K24 in a civic that pulls 220+hp

CGTSX2004

iTrader: (1)

Was that an 06 on a dynojet?

CJams

05 AT on a Dynojet. One of the other TSXs they dyno'd pulled 149hp. Mine was around average for the TSX's they dyno'd.

Tsx536

on getting a baseline.

I wouldn't worry about your numbers compared to others. IMHO, it's more about how much your numbers go up as you put mods on.

CGTSX2004

iTrader: (1)

Ah...got it.

rmpage

5AT guys, did you do your pulls in 3rd or 4th gear? Final drive ratio in 3rd is almost exactly 1:1, so that's what we should be using. I used 4th on my last posted pull so it is assuredly inaccurate.

Reach

I did the 2006 AT + CAI in 3rd.

Dan Martin

I understand that people want a 1:1 ratio or as close as they can get it, but that's only within the transmission. The final drive is 4.70:1 for the MT and 4.44:1 for the AT. I've never seen how they set up the dynos, but do they enter this ratio into their computer? If so, why couldn't they just enter the transmission ratio as well?

rmpage

The Mustang derives final drive ratio by conflating roller RPM with crankshaft RPM so it all works out. There isn't any error with them, regardless of what gear you're in. Not sure how Dynojets work.

chuson

Hey Dan~
Do you know where and how much to Dyno in Toronto???? And which is your favourite one??

NJTSXMan

I'm trying to find a shop with a dynojet here in the NJ/NY area.. the only thing I can find is mustang dynos. Anyone know?

rmpage

Why? Mustangs are far and wide superior test equipment.

JTso

iTrader: (2)

How does the Mustang dyno handle temperature changes and apply SAE correction?

rmpage

It's all done by the software. Being able to dynamically vary the load it puts on the wheels (the rollers use eddy current brakes rather than simple inertial resistance) makes for a very flexible platform. Also with a Mustang you can tune the engine under load, rather than having to adjust a setting, do a pull, adjust it again, etc.

JTso

iTrader: (2)

I know the Mustang dyno can load the wheels during runs to simulate road condition. But I don't ever remember seeing any SAE corrected dyno output using a Mustang dyno. The auto manufactures and DynoJet use SAEJ1349 standard to measure outputs, which means the output of a car tested under one temperature condition is the same as testing the same car under a different condition by using SAE correction. By not using SAE correction, the output is for that particular day and condition and can not be used for proper comparison. Many people intentionally used non-corrected numbers to brag about outputs, but SAE numbers are more meaningful.

Some SAEJ1349 info... www.sae.org/certifiedpower/details.htm

rmpage

Doh, now I know what you mean. I'm not sure about that. I'll ask next time I'm down there.

NJTSXMan

I finally found a dynojet to dyno my car. Is that slight dip and increase at 5,000 rpms normal for an hondatafied ECU?

2005 - 5AT with Comptech Header, Comptech Icebox, Random Cat, Hondata,
and stock exhaust.



My best run:

rmpage

Mine didn't show any sort of dip; torque at VTEC was perfectly flat. However the little corkscrew artifact at 6900 can be ignored - that's the torque converter unlocking in preparation for the next shift. Actual peak hp is probably 4-5 less.

NJTSXMan

Interesting... any reason why there would be an hp/torque dip at vtec? or the cause of it? thanks.

hondata

Yes. The cam angles on each side of the VTEC point are about 15 degrees apart. The cam takes time to rotate, so just before VTEC we rotate the cam into position needed for the high cam. This decreases power just before VTEC, but the result is a better powerband above VTEC, ie it is a compromise.

Looking at your torque curve I can tell you have good breathing and a low restriction exhaust by the way your torque jumps after VTEC. Your setup would support a lower VTEC point.

JTso

iTrader: (2)

Good inf hondata. I see a SC setup in his future with a lower vtec point.

andrew4037

edelbrock is making manifold for 24 k with wicked throttle body get reflash they say v-tec will pop in the 3,000 to 4,000 range cant wait

CGTSX2004

iTrader: (1)

Can we get that one again in English?

Reach

OK, that piqued my curiosity enough to warrant an email to edelbrock. Not that the above guy knew what he was talking about at all, but I hit their website and they have a section marked "New" for Honda/Acura.

JTso

iTrader: (2)

Before and after results.

xizor

nice low end gain there, and gains all the way through

Dan Martin

Nearly 200whp

oem tsx

time for an update...



that is my lastest dyno and here is all the data i have collected on my car over the last 3 years:

1/4 mile best time stock - 16.5s california speedway
1/4 mile best time full mods - 14.7s
1/8 mile best time full mods - 10.02s irwindale drag

mpg: 24 avg

mods:
04 mt w hondata
injen cai
comptech header
custom single exhaust
carbon fiber hood
hankook RS2
kosei k1 ts
buddy club N+ spec
comptech rear sway
ingalls camber

i tried really hard to take off as much weight as possible. For every part i replaced i weighed the stock and the new. so far i've calculated my car to be approx 3230lbs - 96lbs = 3134lbs w 207 whp dynapack

oem tsx

here is a resized dyno



when launching im still gentle with my car, so launches are only @ 2-3k rpm
hardly launching at all, but its just my stomach churns if i jolt my car violently.
i want to see if i can i drive it 100k + miles with all my mods + hondata.
I know my car is capable of faster times with a better launch.

also, am i the only one in the USA who sacrificed the super powerful dual exhaust look of our slow stock tsx and went w/ single exhaust for max performance?

i think dual exhausts on slow cars is a parody

oem tsx

tip: my single exhaust added 10lbs of torque and saved 30lbs off car

rmpage

I agree duals on engines with one exhaust manifold are a bit silly, but nobody's ever really done a comparison between single and dual-muffler performance exhausts on this car. Given that the Y pipe is so far back on the car, I don't imagine it making a difference. What is important to remember is that heat is what makes exhaust gases move quickly down the pipe, as when the exhaust is hotter, pressure is higher, the compressions and rarefactions are more pronounced, ergo everything is moving faster (thus the reason for coated manifolds, especially on turbo cars). By the time the exhaust hits the Y pipe it is back at the rear wheels. It has cooled considerably, and the pulses have combined into a steady stream somewhat. So from a thermodynamic standpoint it doesn't seem like that would make a big difference, but I'd be interested in any related testing data.

Nice output by the way.

JTso

iTrader: (2)

I would be interested to see a single vs dual exahaust comparison, but I doubt it makes much difference like rmpage has mentioned. Unfortunately, we might never find out so all the speculations remain. However, if anyone is willing to send me a single exhaust for testing, I will cover the dyno fee.

oem tsx

i think those aftermarket exhausts people get may be heavier than stock exhaust. They may actaully be going slower for the big dual exhaust look.

fyi: the stock dual exhaust weights in @ 61lbs.

also ne1 need stock intake, header, exhaust, springs and shocks, and sway bar pm me.

NJTSXMan

14.7s 1/4 mile.. impressive... I believe you have the fatest recorded time for a TSX 6MT.. The second fastest was 14.9s for a 6 speed.

oem tsx

i think 14.5s 1/4 mile is possible with better launch

JTso

iTrader: (2)

The two aftermarket exahust systems I tested weight less than the stock system. The entire package including the big shipping box and packing material is under 60 lbs.

PrecyseStylez

Where did you run that 14.7??

Chris_F

well a single exhaust wont have any negative effects thats for sure. The exhaust Im still waiting on (j's racing) weighs about 5kg flat. That's a saving of over 15kg over stock.

JTso

iTrader: (2)

The weight saving is definitely good. Let us know how loud it is once you have it on.