zero to sixty too slow

[SatinJay'd]

I love my 300c, but the 0-60 time is way off my expectations from what I have read, high 6's. Chrysler has touted 6.2-6.3. Other publications note times under 6.0. The dealership made sure I was current on Flash updates and say they checked other specs.

I have am running the recommended octane w/ the middle grade- always name brand fuel. I tried premium, but no noticable difference. The engine has over 7K miles.

Any ideas?

[joeSRT8]

Are you taking the shift out of D and putting it into 4 before launching? Are you disabling ESP? You need to do both as a baseline.

[SatinJay'd]

I am keeping in D- either way you are in first gear, what is the difference? Also from one test I had read, maybe Road and Track, under specs, they noted leaving on the traction control gave better times.

[joeSRT8]

I'll let everyone else chime in that I've seen make the same point in other threads because the difference is actually noticeable to me when shifting from D to 4 before launch as well as leaving ESP off.

[SatinJay'd]

Thanks for the suggestion. I'll give it a try. I know w/out the ESP on, more tire spin adds to the grins

[mspeasl]

Stuck the foot in my mouth on this one. I was thinking one thing and said another. Sorry

[jcsganga34]

Originally Posted by mspeasl

Don't know where you got the idea that the car is an under 6.0 machine. Only one publication has it anywhere close to that at 6.3 all others are much higher. Also I haven't read anywhere that Chrysler says the car will run under 6.5.

I believe Road and Track had it clocked one time at 5.3 (in the special magazine they ran on the 300C) although they were not able to duplicate that on their second test,. Car and Driver clocked it at 5.9. This is all from memory, but I am positvie two different publications clocked it under 6 seconds. I think Motor Trend was around 6.1. Again this is all from memory, I think someone should be able to confirm. Also, many people on this board have clocked under 6 seconds. The launch is very important to get this time, also most people have accomplished these times by shutting ESP OFF and dropping the gear to 1 and let it run the redline and shift automatically. Also slightly power braking the car before the launch. There are multiple threads on getting the best 0-60 times in the performance mods forum

[Northern Rider]

Originally Posted by SatinJay'd

I love my 300c, but the 0-60 time is way off my expectations from what I have read, high 6's. Chrysler has touted 6.2-6.3. Other publications note times under 6.0. The dealership made sure I was current on Flash updates and say they checked other specs.

I have am running the recommended octane w/ the middle grade- always name brand fuel. I tried premium, but no noticable difference. The engine has over 7K miles.

Any ideas?

Check your tire pressure. Make sure they are at spec. or a little under. ESP off. Autostick in first gear. Warm the tires. Powerbrake - Left foot on brake - bring revs up to where you feel the wheels starting to move - Bring up revs more - keep enough brake on to let the car "walk forward" with wheels spinning - this is warming the tires - drop revs to under 1800 - apply more brake with left foot - until car is stationary - get ready for the timed run.

From 1800 rpm FLOOR the gas pedal while releasing the brake. You do not want much wheelspin nor do you want any dip in rpm. With a little practice you'll have it perfected. It's easy with the C.

Once you floor it, let the car shift up on it's own. Your 0-60 time should come in at 6.0 or under, depending on the weight of the car including fuel, the asphalt, temperature, wind, and the luck of the draw.

Hope this helps.

[goddardzilla]

SatinJay'd

What are you using to measure the times?

Let us know if Northern's technique helps.

Zilla

[Dixietwister]

Torque converter is a torque multiplier if used for max effect. 1200 RPM's and release the brake, stabbing the gas. Torque converter spin's up (before lock-up). The flywheel effect helps to launch the car. With the narrow tires more consistant times can be had, with MDS on. No time to make the tires sticky with BMW pushing it hard. Cook the tires, and the MDS kicks in, and kills the engine and your times. Don't use MDS, and torque will smoke the tires, and kill the times. Not using the MDS takes nerves of steel, when the pressure is on. More likely to be looking at the BMW's tail lights. Wider or sticker tires than stock will require higher RPM's at launch and might Require power braking to keep from bogging. Maybe no MDS. Someone at the truckstop told me this so it may not work.>>>>>>>>>>>>>>>>>>>>> :o Dixie