Stage 1
Bolt-On Basics
Cold air intake, exhaust, and tune β the foundation for any build. What to do first and why.
Estimate your 1/4 mile ET & trap speed from power and weight.
Convert between horsepower, torque, and RPM.
Rough crank HP from displacement and boost pressure.
See how your build stacks up β lb/hp and whp/ton.
Convert air/fuel ratio to lambda. Works for gasoline, E85, and ethanol.
Check if your injectors can support your HP target. Keep IDC under 80%.
Calculate vehicle speed at any RPM based on gear and final drive.
Compare two tire sizes β diameter difference & speedometer error.
STOCK TIRE
NEW TIRE
Mix pump gas and E85 to hit a target ethanol content.
Calculate static compression ratio from bore, stroke, and volume specs.
Back-calculate wheel HP from your 1/4-mile trap speed and vehicle weight.
Measure how well your intercooler is cooling the charge air.
Gas-port N2O only. Estimates drill sizes for N2O and fuel jets.
Always verify jet sizing with your nitrous kit manufacturer.
Find your ideal launch RPM and vehicle speed at launch.
Type in either field to convert both ways instantly.
Find the minimum lph rating your fuel pump must support.
Effective wheel rate after motion ratio and installation angle.
Real guides written by tuners β from bolt-ons to full builds.
Cold air intake, exhaust, and tune β the foundation for any build. What to do first and why.
Turbo vs supercharger, sizing your setup, fueling requirements, and what to upgrade first.
How to interpret power and torque curves, identify flatspots, and compare dyno results.
E85, methanol injection, port injection β what works at 600+whp and what kills engines.
Everything your car needs before lapping: brakes, cooling, safety, and data logging.
What to ask before booking, how to vet a shop, and red flags to watch for.