Race Tips Performance Newsletter Archive Below are past issues of the Race Tips Performance Newsletter for your viewing pleasure.  If you would like to get the jump on the competition and receive the current version as soon as it is published, click here to sign up.      Mar Aprl 2013 Driving vs play, Nuts & Paper in the shop, HP from speed, weight, & acceleration Jan - Feb 2013 Driver Coaching, Engine diagnostic tool, Brake rotor temp Nov - Dec 2012 Data phobic, Webinar dates, Mean effective cylinder pressure Sept - Oct 2012 Bearing driver, Data training, Toe per flat Aug 2012 Spark plug puller, Back to school, Suspension frequency July 2012 File Cleaning, Volunteers, Mph vs Speed June 2012 Test Probe, Data Trick, Lap Speed April - May '12 Tool Tip, Data Trick, Weight Transfer Jan 12 Torch Tips, Webinars, Cam Math Nov - Dec 11 Misc Shop Tips, Unfair Advantage, Weight Conversions Aug - Sept 11 Pit lane adjustment sheet, Advanced data classes, motion ratios July 11 PTN Data article in SportsCar magazine, pre-spring checker, steering wheel pull June 11 PTN Data classes, better memory with track maps, pinion angle change April-May 11 PTN Voltage targets, Advanced classes, Drive Thrust Feb-Mar 11 PTN Ball joints, Data classes, Aero drag calc Jan 11 PTN Data Acq Classes, Aero tufts, Leaf Spring rate November PTN Online Magazine, Reading Plugs, Coil Spring Rate October PTN Online Library, Tire temperatures, Avg lateral G September 2010 Off Site Data Analysis, Race Studio 2 graphics, Compression Ratio August 2010 Data Acq Training ,Shock bleed, Center of Gravity Height July 2010 Set-up Management, Tire Indexing, Ackerman angle June 2010 Data Bank Club, Set-up method, Corner (turn) radius May 2010 Free calculators, Its about time, Pinion angle vs toe April 2010 Race car College, Tire cards, Weight vs % March 2010 Front Suspension Geo Pro4, More newsletters, Engine air inlet