accsuperstar

comptech dynos for tsx should be up sometime next week. so i was told in an email from them

Stokeless_TSX

on the second run i didnt floor it from the begining i was kinda sluffing but then i stomped on it and i got more power also i let the engine cool down for like 20 mins the first run was done right after ti got to the shop which was a 20 min drive so i think the cooler engine had somethign to do with it. i dont know how accurate the dyno is but its not inbedded in the floor there was like a lil lift my car went on raised it up and i then drove on to the dyno thats the first time i was ever on a dyno like that...kinda scary cuz if the straps broke i would have hit a concrete wall but it was coo now just need a header and then i will be good i wanna compare the injen intake vs my custom one though anyone in seattle area down to try a swap while my car is on the dyno

accsuperstar

http://solar.innercite.com/comptech/tsxdyno.html

dynos up for comptech

Stokeless_TSX

only 13.2 hp over base line....i gained 14.6 with just intake and exhaust....hmmmmm i wonder what a DCheader will do with my set up. and the addition of the apex VAFC II once i have a diagram out and a header made for it...maybe another 6 or 7hp...hopefully huh

AZTSX

how much does it cost to have ur car dynoed adn tuned?

Stokeless_TSX

depends on the shop mine isnt turned there is no way to tune them as of yet

AZTSX

mkay nother ? for yas when i am racing in the 1/4 when should i shit at 1st gear and etc... i dont just go to the redline everytime right wouldnt i have to look at a dyno and see where the power begins to drop at each gear first of all i sont know how to read one lol sry im a big newbie to these things..thx a bunch

Stokeless_TSX

power doesnt drop rises all the way to redline..trust me look at my dyno

TinkySD

i'm bettin power rises all the way to 7400 rpms, try and get a run up the rev limiter if you can

TinkySD

even if torque begins to fall of you have to take into account that the gearing in the lower gear is multiplying the torque by ALOT more than it would in the next taller gear. It is something that has to be analyzed in each car/torque curve but in the tsx it's ALWAYS better to be in the lower gear -- you get more drive power.

2.4TSX-R

Were the test done by using 91 octane gasoline?

if so, should give another shot by using 94 octane...

Lung Fu Mo Shi

Shouldn't make too much of a difference since the engine timing is designed for 91 octane.

Stokeless_TSX

but the timing is "intelegent" and should be able to change on its own

xizor

a question about dynos, don't want to think about physics too hard so I'll ask the rest of you. does wheel weight affect a dyno at all?

Stokeless_TSX

i believe so dont know for sure but its rotating mass. Kinda like if you get an after market flywheel you will see better acceration and more power cuz less weight to turn i think its the same concept but dont quote me on it.

jaje

yep...wheel weight, diameter, etc. affect power applied to the ground...that is why a brake hp is a better way to measure power (mustang dynos)...15" lightweight wheels will put more power down than 17" heavy wheels

xizor

time to get some light wheels to boost my ego. j/k

I pulled 175WHP, 154 Torque on my dyno pull last week. I ran it up to 7000RPM, and I think I could've definately squeezed out some more running it up to the fuel cut off.

fdl

Hey xizor, can you post a pic? Do you have any mods?

xizor

link to larger scan

I have an K&N CAI. I think I could've squeezed maybe 3-5 more WHP out of it going up to fuel cutoff as it was still climbling right up to 7000RPM

tmalzahn

Here we go.

All Comptech stuff. See sig.



Video Links. Taken with my digital camera, so resolution is not the best, but it works.

http://209.98.62.68/qt/2new/dyno20040316a.mov
http://209.98.62.68/qt/2new/dyno20040316b.mov

93 octane gas with a full bottle of 104+ octane boost in a full tank of gas. 4500 miles on the car.

I am almost at my goal of 225 crank hp.

-Tim

Dan Martin

Sounds great Tim! Thanks for sharing...

fdl

Tim, get your ass over to a track and see if YOU can be the first ...

http://www.acura-tsx.com/forums/show...&threadid=7497

JTso

iTrader: (2)

Tim, sound good! any idea what the a/f ratio was?

Wess

Sounds good. Did the Comptech headers make a big change? That's my last mod and maybe a better chip other than the cheap E-bay ECU one. The real chips are in the hundreds though .

l8ers
Wess

TinkySD

I'm wondering if running a lower octane gas might improve your numbers tmalzahn.

TinkySD

I'm wondering if running a lower octane gas might improve your numbers tmalzahn.

xizor

Good thought. A lot of forums I've read say lower octane contains more "power", but we have to use a higher octane to achieve the compression. Would using octane above 91/93 possibly be worse?

TinkySD

Technically the higher octane gas you use the less potential power it contains. What higher octane does is allos a more controlled burn to avoid detonation with higher temperatures/compression which is important in a boosted application. A N/A motor has to be tuned to take advantage of the higher octane gas. I'd love to see a run with 91 octane and ee if that affects your numbers.

gogozy

if the A/F on TSX already rich then lower cctan such 89 may not trigger retar, since rich can also stop the knck, thus greater energy in lower octan may gain a few hp.. TSX has compression ration of 10.5:1, and TL has 11 something...

bmencig

Please find my post on dyno test for honda accord 2.4 (europe version)

http://www.acura-tsx.com/forums/show...&threadid=8759

TSX=XTC

Hey any of you guys that are dynoing
Pls post what GEAR that you used
3rd gear pulls are not a true 1:1 dyno pull

xizor

I believe mine was in 3rd... I've read that 3rd and 4th pulls are exactly the same, but I don't know much about the process

TSX=XTC

1st Gear Ratio: 3.267:1
2nd Gear Ratio: 1.880:1
3rd Gear Ratio: 1.355:1
4th Gear Ratio: 1.028:1
5th Gear Ratio: 0.825:1
6th Gear Ratio: 0.659:1

final drive is
4.700:1


A true Measurement of RHP is 1:1
as most cars dont have a 1:1 ratio it is standard to do a DYNO pull in 4th gear.
As 4th gear is usally the closet to 1:1

Stokeless_TSX

mine was in 4th and i pulled 184.6 with just intake and exhaust...I AM STILL IN THE LEAD muahahaha!!! The DAZZ TSX doesnt count guys =)

Jab31169

yes you may have the highest HP but I have the highest TQ at 162.2 with just an intake. :P Oh an HP was 182.4

JTso

iTrader: (2)

It's hard to compare dyno output unless the cars are on the same dyno, and under the same condition.

BlackTSX

This is true, anyone see the article in sport compact car abotu dynos?

Stokeless_TSX

i saw it some had a 20 hp difference..me and jtso dynoed at the same place so i know im still up on him lol

ITR#203

Here's how I understand dynos. First off, while a 1:1 ratio is preferable, it not really necessary especially if anyone has used a DYNOPACK vs a DYNOJET, b/c dynojets have a input for what gear you are running in. Also, note that while 5th gear is 1:1, in reality it is like a 4.76 (final drive) x the secondary gear ratio (which should be around 1.2ish) so it not really 1:1. Also, note that while running in a shorter gear (numerically larger) gear raises torque transfered to the ground, 1. spinning the larger gear makes more energy to spin ( relatively minor but also explains why many times swapping a numerically higher final drive does not equal better dyno numbers) and 2. because less time will be spent on the dyno (shorter gear takes less time to go through the whole rev range), the dyno might not be able to get a good read, so I've seen cars dyno less in a shorter gear (a 350z comes to mind).

sauceman

Good explanation, ITR#203.