How Do Tuners Tune?

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Re: How Do Tuners Tune?

Post by Vlagra DUH on Tue Jun 05, 2012 8:32 am

BiggLou55 wrote:Viagra... I have a spread sheet i put together for calculating Spring Rates... It's based on the Xtreme Skills formula, and is very handy for dialing spring rate... I have a link somewhere here in the Student section... Wink

Yum, I'll have to check it out.
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Re: How Do Tuners Tune?

Post by nubrocket on Tue Dec 03, 2013 8:26 pm

I just read through this for the first time. Besides feeling nostalgic for all the names of folks that contributed, I find this thread amazing.  I'll make it my mission to learn how to tune in FM5.

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Re: How Do Tuners Tune?

Post by BiggLou55 on Wed Dec 04, 2013 3:21 pm

Keeping my fingers crossed that I get an Xbox One for X-Mas...

On the tuning tip...  There are some other things to note...

Keep your eye on tire width and type.  I always go with the lightest rims possible (the lightest three categories), but I will change the width and type (sport, race, etc.) depending on increased power/class.  If I'm not really adding that much power and the car already handled well, I may only go up one or two sizes in width.  If I'm taking a car from D to B, I usually go to Sport tires instead of full race.  Why?  Tire width adds weight, and if you are not adding that much power, going from a 195/55-17 to a 235/40-17 might be too much.  going from stock tires to race tires will add so much PI, that you might not be able to do anything else.

It's all about balance...
If you are going with drive-train and/or engine conversion (like engine swap or aspiration) start with those, then move on to the rest....  Brakes, suspension bits, weight reduction (appropriate to class - remember it provides handling and acceleration not top speed), Tires (width & type to class), Rims, clutch and flywheel should come first...  Then Transmission...  Then engine bits, but start with exhaust, intake and air cleaner.  Those provide the biggest weight removal in FM4.  Then on to Pistons and Valves..  Then everything else.


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