tberry

okay so I was bored and wanted to know what my car is capable of and decided to get a dyno and G-tech run. The car is a 02 C230 coupe w/ auto+C5+C7pkg (if u're too lazy to ready the sig)

Dyno: I'm in Houston, TX (sea level) and the weather was a nice and sunny 75F. I ran 3 dynos and the best was 165+hp and 178+ft/lbs (1st run 161hp&172ft/lb, 2nd 162hp&173ft/lb). This is complete factory settings with ESP off and quarter tank of 93 octane gas in 4th "gear".

G-tech: This is now in the evening and a buddy of mine and I decided to go to an industrial empty road. The weather is a cool 50F at night. 1st run i turn ESP off, level the G-tech, come to complete stop, leave it in D and just punched the gas: result was 0-60mph in 7.8sec and quarter miles in 16sec at 90+mph. Note that i'm 175lbs (a little on heavy side I know ) and my buddy is about 140lbs, the gas tank is over 1/8, and yes the spare tire is still in trunk. I woulda love to do different runs (COMPLETE ESP off mode, no buddy and spare (160lbs less?) and maybe a little power-braking launch and probably could be 0-60 7.5sec and quarter in high 15s. Unfortunately the nice Sugar Land cop saw me do the first run and decided to stop me. After running my plates (or should i say plate since i only got ONE and illegal/non-DOT light bulbs) he pretty much gave me a pep talk and told me to go home

Well this conclude my evening and I was pretty happy with the way everything turned out overall. Will try to post a scan of the dyno w/ A/F ratio graph and my car has about 2400miles BTW. Good nite all

*Note: car is rated at 192hp at crank and dynoed at 165+hp which translate to about 15% drivetrain loss. NOT FREAKIN bad for an automatic car that weighs about 3300lbs+. I think with a pulley kit+filter/intake+intercooler and a chip/software to optimize all of these mods can bring it to 200hp at the wheels! hmmmm.....

MagicianB

Wow nice, wish you got a 15 sec 1/4 mile tho. Still not bad You got lucky with that cop hehe. Cooler = better runs? Or am I wrong? I know that lower level = more air = more hp... right? :p Help!

tberry

I believe cooler dense(r?) air = more hp. I was expecting during the 3 dyno runs to get worse and worse but was surprised that it got better (first 2 runs were done immediately but 3rd was 10 min after). I also notice the coolant temp after 3 dyno runs was at about 95C (i think celcius) and normal driving around is at about 85C so couple of hard runs = 10C increase? Heck if I did a dyno run at nite it may have even yield better results! Although I think anything lower then 50F ambient temp would not be good (there must be something bad once temp reach into 30F and lower....dunno what )

Mercedes

Wow good numbers. And you have a auto, so that would mean better numbers for the manual. Good job

tberry

i would guess hp diff btwn manny and auto would be about 10hp (+ or - 1hp). I heard that magazines best coupe dyno at wheel #s were about 178hp for manny (w/o air filter, probably almost empty tank, no spare, and a variety of other things to get best #s) and I'm sure I can do those things to show about 168+hp as well. Of course real world advantage of manny would be ability to launch better and if driver is good quick shifts btwn gears. Although I wonder since the coupe has pretty wide powerband that if a 5spd manual would have been more advantage rather than the 6spd (although 6 spd just sound DAMN cool )

*I was reading some of the old posts and someone w/ similar pkg as my coupe got 0-60 in about 6.9sec w/ powerbraking at 3500rpm (with just aftrmkt filter&muffler)...realistically w/ pulley&filter and some practice I should be able to hit 7sec flat or less.

Matt230K

I know removing weight will help your acceleration times, but how does this give you more horsepower on the dyno?

tberry

i could be wrong but since the dyno is measured at the wheels on rollers wouldnt less weight (as well as probably lighter/smaller rims/tires) would yield better results? just my theory. Also no filter will give more CFM of air, maybe also tweak around fuel/air (105 unleaded Sunoco gas?)....i know some spray nitrous into engine bay to yield better results on dyno as well (i figure temp&weight effect dyno results)....again i could be dead wrong.

BlackC230Coupe

i was hoping my auto c230k would run high 14's like a 14.9 when i get my pulley but i dont think that will be possible. maybe i will be wrong. hopfully my exhaust and air filter can help.

Mercedes

Hell yeah you should be in the 14's easily. You should be putting at least if not 198HP at the wheels or even 200Hp at the wheels. I just can wait until they make something for the 2003 1.8

Outland

If Buell's Dyno figures are to be trusted, and his car was making something like 236HP, I can see 14s being no problem. Older C4 Vettes ran low 14s and high 13s with only 230HP, and they weighed about the same. They had more torque, but still, 14s should be cake.

vadim

Correct. Plus, the cooler the ambient air, the more efficient the intercooler. Double delight

BlackC230Coupe

thanks guys i feel better knowing it may be possible to run 14's.
the only thing is that buell's dyno was takin with the stock fuel settings, i hope stage 2 wont really take away much HP.

Outland

They do...larger intercooler. I think its like 700bucks. Given how hot the air must be at 11psi, it should be good for 10-15HP. You could also have ASP churn out a S/C pulley...not a crank pulley like the M111's use, but a new supercharger pulley.

tberry

I hate to say but i dont think you'll make 14sec quarter on just pulley, filter, exhaust, with auto. I figured with all those things and maybe the proper software/tuning you'd get 195-200hp AT THE WHEEL and will prob get low 15s like 15.3+sec. Also, have you dyno'd your car yet? Mine stock at 165+hp i'm told is good for auto as there are some dyno'd at about 155hp

oggle

Exactly what does a "pulley" do and how much do they cost? Also, anyone have these types of numbers for C320?

Outland

The car runs 15.3 stock. Pick up a copy of MT if you don't believe me. Shaving off .5 seconds with the increased boost from the pulley should be doable.

tberry

Outland...thank you for the MotorTrend quote. In the real world the numbers are typical different and not in a good way. I know a few folks around here quote magazines and play paper racer (example: coupe 6spd 7.2sec vs civic Si 7.8sec....oh i win...etc) and if only it all work that well. if u wanna get better idea of your car get a dyno, get on a track and do some quarter mile, get a G-tech and do some runs. My past experience has taught me not to be optimistic when doing dyno or runs as you will be disappointed 90% of the time. also, those thinking of quoting me, YES there are things u can do to vary and manipulate dyno, track, g-tech times as well but those are about the only tools most ppl. have access to.

Outland

I'm not a paper racer...each car is different, and the conditions and the driver effect the testing results dramatically. I'm not a big street racer...but when conditions arise that put me against another car in the other lane, sure, I'm gonna go for it.

I feel confidant about the MT results because they tested a couple dozen cars all at the same time, under the same conditions(no fudge factors) and that makes those numbers useful for comparisons...instead of the usual mag A(notoriously unkind to brand A) got this time, and Mag B(which favors brand A) got this time kinda results. Its also nice to see that they match MB's 'official' results almost dead on.

Then you have the really wierd results, which bashers of one car or another always quote. Here's one to make you scratch your head...in a recent Sport Compact comparo, the Civic Si nuked the RSX-S in accelleration...wierd, eh? Each car is different, and each testing is done under different conditions.

FWIW, the RSX-S ran a 15.1 in that same testing. 2 tenths of second quicker, and the RSX is a 'fast car', but the C-Coupe isn't? Give me a break. Get a pulley, go have some fun.

MacPhisto

Where does MB publish the "official" performance stats for their cars? Most of the stats are listed as "TBA" on their website.
Thanks

tberry

I have the 2002 MB coupe brochure for C class and it state coupe 0-60 manual to be 7.2sec and auto to be 7.5sec. Also, according to it the auto only weighs 40lbs over manual tranny.....if true thats amazing since every other manual vs auto has been 100+ to 200lbs.

BlackC230Coupe

i was not sure it can break 14's but i was hoping.

now i feel bad again knowing it might not.

tberry

actually i think with pulley KIT, exhaust, filter/intake, larger intercooler, and software to manage/tune it i'm sure you can hit under 15 sec. easy

BlackC230Coupe

to bad i do not have a larger intercooler and software.

Outland

My god man, get out there and put some numbers down before you go all sad on us You sound like youve been whipped by the SoCals and the paper racers on this board. If youre afraid of looking silly at the dragstrip, get a G-Tech, and do some before and after runs. The G tech is notoriously inaccurate in terms of trap speed, but its times are reasonable close, and good enough fore measuring a DIFFERENCE.

Hell, put some small(14s or 15s) wheels on, ice up the intercooler, and go for it. You should be able to run mid to high 15s stock with the AUTO. Get out there. There's always ways to make more power.

BlackC230Coupe

Calm down down man, i am not embarrassed to go out there and race stock, as there are tons of slow cars that go there. I will just wait till i get the pully to go since the track is to far out of my way.
How would i be able to ice up the intercooler on this car? theres no access to it without removing something.