Dez did say that meth isn't for every combination, suggesting high-octane use for Mustangs that are more strip-oriented with limited street use. Case in point: A pair of supercharged Fox-body Mustangs rolled into the shop for dyno work while we were in town. Each pumped out over 20 psi of boost and made 700-plus rear-wheel horsepower. Both cars also ran in the nine-second zone at the track. Because of the limited street time, Dez said it's better for them to run on the VP C16.
Cost aside, both high-octane and a meth/pump gas mix will allow your Mustang to ingest more boost and run much higher timing. It all leads to more power from your equipment, and it can be done safely. Those with street-driven Mustangs should look at methanol injection, and those with limited street time would benefit from race fuel.
The intake was chilled to...
The intake was chilled to help keep the car at consistent operating temperatures for all runs. Dez also drained the tank dry before we moved on to the race fuel tests.
Five gallons of VP Racing...
Five gallons of VP Racing Fuels C16 race gas were added. This stuff goes for $13.50 a gallon and is rated at 117 octane.
All dyno testing was done...
All dyno testing was done on Dez Racing's Dynojet chassis dyno.
To further prove the point...
To further prove the point that meth injection and race fuel require higher boost and high timing is Adam Secour's '01 Mustang GT. It has a stroker engine and a ProCharger F1A blower. On pump gas, the maximum boost and timing was 14 and 12, respectively. Pump gas/meth and racing fuel allowed the boost to go to 21 and the timing to 17 degrees. That made for a Cobra-slaying 695 rwhp! You can't do that on pump gas.
It may sound as if race fuel...
It may sound as if race fuel is a thing of the past, but it isn't. Dez doesn't recommend it for every combination; it's meant for street machines that see a lot of street miles. That way, the customer can drive around and get the most out of the parts he bought. There are instances where race fuel is the preferred drink, such as the more racy combos like the one pictured. This combo consists of a 356ci stroker with a Vortech YSi-Trim blower, Edelbrock Victor Jr. heads, a TFS intake, and enough boost to push the 3,300-pound LX deep into the nines. The car sees limited street use and a lot of track time, so Dez says running straight C16 is the way to go.