badstsx

When I first got my 06 tsx auto i put Cold air intake. My 0-60 time was about 8.4-8.5. Then I put my kazera 18" chrome wheels on but my tire size stayed the same. My 0-60 time was low 9's to mid 9's. Then I put my comptech header and exhast and my 0-60 time clocks anywhere from 8.2 - 9.1. WTF is going on here. Is it the wheels that are slowing down the car, road conditions/weather conditions, or is it just me using the stop watch incorrectly ( to late pushing the start button.) I know my car isnt a race car but I still want it to be somewhat decent. Thx

junktionfet

There are so many variables at work, it is impossible to say for certain... Here are some thoughts though:

Wider and/or larger tires do provide higher rolling resistance (in general). If the level of traction during a 0-60 run doesn't change significantly with larger tires, then the acceleration times will likely suffer a bit. If traction was never a problem, "pizza cutter" tires inflated to very high pressure would give you brisk acceleration and excellent fuel economy.

Contamination in the ATF can increase losses in the torque converter and during shifts. The fluid gets dirtier with each mile, albeit a very small amount. As contamination is added, the performance of the transmission drifts farther away from "theoretical".

Contamination in the oil can increase parasitic power loss in the engine. This goes without saying.

Fuel grade, drive belt tension, and the condition of the ambient air, air and fuel filters, and spark plugs all have a small but cumulative effect on performance.

I wouldn't expect a header to make an extraordinary change in acceleration from 0 to only 60mph in the real world, but tires and some of the other items all added together might affect it more than you would think.

tlbkcal

maybe get a real dyno reading?

acn684

isnt um...8.5 a bit high for even the at's 0-60?

etarui

iTrader: (2)

What size tires exactly are you running?

acura_ak

i agree, 8.5 seems very slow, even for an auto. does anyone know the manufacturer's or any magazine's 0-60 times for an auto TSX? i'm curious to see how fast the autos are for the '06 models.

yfin

How much does your chrome wheels and tyre combo weigh compared to stock? My guess is a lot more than your OEM rims. If you have added 10 pounds at each wheel that is effectively the same as adding 160-240pounds weight to the car (multiplier of 4 to 6). That is a rough estimate anyway.

If you want better performance from your TSX - skip the trend towards fitting heavy, large rims.

rmpage

Listen to this man for he speaks the truth. Blingin' chrome RIMZZZ may look nice but they usually hurt flat-out acceleration because their increased diameter acts like an increase in flywheel mass at each wheel. This is why you see professional racers fitting wheels to their car that are only big enough to wrap around the brakes.

BusyShifter

The OEM Michelin tire is not the greatest rubber for the sack of performance.

badstsx

a few magazines acutully clocked there 0-60 time in 9.2 sec. i think this was in the full auto mode and not the sport mode.

badstsx

215-45 r18

TSXdawg

TOV reports 06 AT times as:

Auto mode - 8.7 s
SS mode - 7.7 s

Stock with no mods.

CarbonGray Earl

I get about 8 sec consistently in SS with my 05 5at w/ Comptech Icebox with VSA on. That's consistent, not any real effort to get that, and I think I can get it down even more if I tried. 8.5 seems a bit much, but with 18s and a sub in back, I can see that happening pretty easily.

psykotik

your rims are what weighing you down

jwood_06TSX

i think you are experience what i was in my other post when i was talking about why my 04AT was so much slower than the 05 AT rental i had. Read the posts in there and about what simplyscion wrote about the intake! I also agree with psykotik maniak about the wheels because when i got my car back, it actually seemed sluggish at the wheels.....i have chrome wheels too....17's though

badstsx

Yeah those times are wrong. motor trend and comsumer reports say 9.2 full auto.

jlukja

The TOV times posted are correct. I remember reading them at TOV. The 9.2 time, I believe, was for the 04 AT.

chuson

9.2 is really out of range. With no mod, my 0-60 time is around 8.0-8.2 depends on how I shift the SS. W/ all da mod I had now, it's around 7.5-7.7sec, depends on the road condition, launch, temp, and shift as well.

The Cold Air Intake might slow you down a bit as well, because 0-60 only involve 1 shift from 1st to 2nd, and the low rpm range will rob your time dramatically.

badstsx

Chuson, Im talking about a/t not manual. and how the hell can cold air intake slow down your car. cold air intake sucks cold air to the engine, it doesnt slow it down. if cold air intake slowed down your car know one would buy it smart guy.

CarbonGray Earl

I think CR (where teh 9.2 sec is from) has just terrible methodology....they're usually a second or a second and a half off of the performance oriented magazines.

The TOV times are the more realistic ones, like you said.

badstsx

well when i clock my 0-60 time, i do it with a stop watch. also i didnt take into consideration the weather, road either.

godfather2

those are slow, even for an auto

badstsx

1-1.5 seconds off! huh! well its an automatic, i dont understand how it could be that much that off.

etarui

iTrader: (2)

Your tire diameter is slightly larger than stock (only .15 inches), which means that when your speedometer is showing 60 mph, you are actually going a little faster than that. That, along with wheel weight and manually timing with stopwatch, may contribute to lower than expected results.

rmpage

Also, larger tire circumference lowers your final driveline ratio somewhat, resulting in less applied torque.

You shouldn't time 0-60 with a stop watch because of the inherent margin of error involved (inaccuracy of pressing start/stop, parallax error reading the speedometer, variables like aftermarket wheel sizes). For truly accurate data you should use a G-timer or at least an OBD2 scan tool.