Thread: Optimal Shift Timing/Powerband
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Old Mar 25, 2010 | 08:54 AM
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Walters5507
Joined: Mar 2010
Posts: 66
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From: West Bend, WI
Default Re: Optimal Shift Timing/Powerband
Originally Posted by Franc Rauscher
OK, Your 1st gear issues are just part of the car. Some relief can be offered but the damm thing is just clunky. It is not you or your clutch.

Now, do a throttle reset.
Get in the car and put the key in the ignition.
Turn it on, all the way to the right, but don't start the car.
Push the accelertor to the floor. All the way hard.
Hold for 5 seconds and release.
Turn the ignition to the left but not off, and leave the keys in the ignition for two full minutes.

You have now reset the throttle to factory presets.

Drive the car and see if you have throttle response improvement. The engine will literaly seem "brighter."


Step one is done.

Cheapest peformance mod you can do on the car.

Until you get a sprint booster, you should do this every 4 to 6 weeks. Especially if someone else drives your car.


OK. Now we go for shifting points. This may vary from car to car and driver to driver. I'm trying to remember exact RPM's from before my dyno tunes so if anybody has better numbers for stock, chime in.

Remember that the rev limiter will come on around 5400 to 5700 RPM's
If you want to spin tires, two things to remember. One, most likely you can't. Two, the only way to do so, even slightly, is to turn off your traction control. That might be part of the "clunkyness"you feel.

Best power band is between 1800 and 4500 RPMs so shift into second at about 4500 or 25 MPH

2nd to 3rd is from 25 MPH to about 50 or 55.
3rd to 4th is 50 to 95
4th to 5th is 90 to 130
5th to 6th is 120 to top end (arguably 156 MPH)

There is some overlap but somewhere inside the overlap is the best for your car. Depends a lot on overall weight and how many people in the car.
Quarter mile speeds and time about 95-98MPH @14.7 sec. A decent Corolla can do it. Don't sweat it. Corollas are plain and have no souls.
With practice a little better is possible.

Spend money on a CAI and a good flash tune you can do better but breaking into 13's is next to impossible without major bucks or laughing gas.

TVT has some decent mod kits as does Eurocharged.

TVT is a good shop in NJ.

Eurocharged is in Plainfield IL about three hours from you and well worth the trip.

Both have ads here and are on the forum a lot.

Anthony at TVT is a good guy. I have met him and many here swear by his work.

I have had real good luck with Eurocharged and recommend them highly. Tony Lawshee is awesome at squeezing every ounce of HP and torque out with a dyno tune.

If you come to the CAA, Eurocharged will be doing tunes here on Tuesday the 22nd.

Hope this helps you get started. Don't hesitate to ask these guys or anybody on the forum. I'm just one of many willing and eager to pass on what we think we know about these really cool cars.

DID I miss anything guys? Chime in for the newbie.

roadster with a stick
Franc, Let me just tell you that you are a god send. I knew I was going to need to surround myself with people that know these cars and was hoping to find that here. Well, I have now I’m just plain ole’ excited.

Well, I did the throttle reset this morning before work and I could already tell the difference just in my drive to work. I’m excited to play with it a little after work. You say do this every 4 to 6 weeks until I get the sprint booster. I’ve never actually used, or seen anyone use one on any platform around here. What exactly is it going to be doing and what are the gains?

The shift point information is exactly what I’ve been looking for. This should help me out a lot getting some decent pulls. I’ve been trying to learn the car and I’ve been getting a rough idea of where the power is. This is perfect though. I can see myself spending a good amount of time and gas in the car this evening feeling it out with those shift points.

What do you suggest for the CAI? Is there a specific brand that you prefer or no? I’ve kind of been looking around because I know I need to let my baby breathe a little better.

With the tune, do you suggest I get the CAI all put together and then make the trip down to Tony at Euro? If that’s case, that just sounds like a fun day trip and spending some time down there chattin with the guys at the shop. If he’s as good as you say he is then I definitely deem the trip worth it. I want to do this car up right and somebody that knows it inside and out, plus knows how to get the most out of it in a safe manner is exactly what I need.

As for mod kits what do you suggest? I’ve heard a lot of people going with the TVT kits but what is going to be the most bang for my buck? Obviously they have lots of different options in kits but at what point are you just going over board? I looking to get the full potential out of my XFire and going with tasteful modifications. I have a different thread for what people suggest for mods and kits. So, if you want to check that out and see what people have said then toss in your input there it would be greatly appreciated.

The CAA that you are talking about, I assume that it’s on the events page? Where is that being held? I might want to come to that to see all of your guys’ cars and then get some face to face pointers on mine. There is nothing better than spending a day surrounded by people that not only share a common interest in cars but in a specific car. I might need to take a road trip J

Ever since I started spending time on this site, my XFire and this site have almost become an addiction. I go from the site to car, from the car to the site, back and forth. My free-time is no longer free time. It’s XFire time… I’ve become utterly and completely infatuated with this beautiful, really cool car.
 
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