FORCED INDUCTION PRO presented by Highend Autosports

*For questions about rules, contact IFO directly at

PAYOUTS - $1600 - Must have 8 qualifiers for full payout. Less than 8  qualifiers will receive half the normal payout. Qualifiers must be  capable of running 12.99 and faster.

Winner - $1200 ($2000 if 16 or more qualifiers)
R/U - $400 ($600 if 16 or more qualifiers)
Semi 1 - $100
Semi 2 - $100
*trophy payout only if 2 or fewer entries *Updated 3/1/16

Heads-up Pro-tree (.400) class for F/R/AWD 4/6 cylinder or rotary import  brand/sport compact door cars only (no motorcycles, LSX Rx7s, etc  allowed). Sport Compact vehicles include any FWD or AWD 4 cylinder  (example: Cavalier, Neon, Cobalt, etc). *Domestic badged Import vehicles  permitted, ex. Eagle Talon, Dodge Stealth, etc. Import 8/10/12 cyl  entries limited to DOT approved tires. Any class with 2 or fewer entries  is awarded a trophy only. Slicks and open exhaust allowed. *Updated  10/4/13.

Import or domestic compact car bodies allowed. *Updated 9/28/15

Doors must open and close from inside and outside the vehicle. No center drive configurations. No other interior restrictions.

Full tube chassis OK for naturally aspirated only. No center-drive  systems. Wheelie bars are prohibited for boosted applications, but OK  for n/a and n20 only applications.

4 or 6 cylinder, 2 or 3 rotor Import brand engines allowed. Domestic  compact bodies limited to 4 cylinder. Outside manufacturer engine swaps  allowed. 8/10/12 cyl Import engines allowed, but limited to DOT approved  tires. *Updated 4/28/16

Turbochargers (limit 76.9 single/62.9 twins 6 cyl or rotary auto - 80.9  single 4 cyl - 88.9mm single/62.9 twins 6 cyl or rotary H pattern manual  - 82.9mm single cast 6 cyl auto). Superchargers, and Nitrous Oxide  Systems permitted in any combination. Turbo measured at inducer.  Electric motors allowed. *Updated 3/15/18

FWD, AWD, or RWD allowed. Any type of transmission allowed. *Updated 12/14/14

Any type of exhaust system permitted.

Any DOT approved tires allowed. Slicks limited to 26.0 for FWD and 28.0  for RWD/AWD or any naturally aspirated application. 8/10/12 cyl limited  to DOT approved tires. *Updated 1/17/14.

Highly modified, non-factory setup vehicles (determined at IFO staff's  discretion) 11.49 and faster required to have oil containment device  (pan or diaper). Racers lacking oil containment device when required may  still race at IFO staff's discretion with $100 track clean up deposit.  Deposit returned to racer at end of event pending no oil down. Catch pan  should cover entire area below engine/transmission with 2 inch high  lips on all sides. Lips should to be covered or curved inward. If a  competitor spills excessive oil onto the track, he or she may be  disqualified from racing at the discretion of IFO/track staff.

***If someone in your class is not within the rules, immediately ask for  IFO staff to protest. Once your vehicle is staged, you accept all  conditions of the race.

***Contestants may be disqualified from an event or banned from the  series at the discretion of IFO staff for any one of the following  reasons including, but not limited to 1) breaking rules 2) excessive oil  downs 3) playing excessively loud music with explicit lyrics 4) bad  sportsmanship 5) illegitimate protests against opponents who are not  breaking rules 6) verbal abuse of event staff 7) disrespect/personal  attacks towards the IFO series, track host, and/or fellow contestants.