Plenty O' Fuel
Being that high-rpm engine operation and an auxiliary nitrous system can easily overtax a stock fuel system, you should consider updating your car with a high-performance fuel pump. In addition, a fuel-pressure regulator is a good idea so fuel psi can be monitored. Often times, an aftermarket, high-volume, mechanical fuel pump will work great for nitrous systems in the 50- to 150hp range. But if you intend on running a heavy-duty nitrous system (such as an NOS Cheater Series or a Fogger setup), it's much advised for you to upgrade to an auxiliary electric fuel pump, such as one from Mallory. A few weeks earlier, we had upgraded project Cheap Street Chevelle with a new Carter 7-psi/110-gph mechanical pump, so our fuel delivery system was adequate for our new NOS Super Power Shot nitrous system.
| Suggested Tuning Combos |
| Added Horsepower (via nitrous) | Jetting (N2O/Fuel) | Fuel Quality | Ignition (advance) | Spark Plug Heat Range |
| 100 hp | 47/53 | 92-octane pump gas | Standard | Standard |
| 125 hp | 55/61 | 92-octane w/octane booster | Standard (sometimes 2-degree retard) | Standard (sometimes one heat range colder) |
| 150 hp | 73/82 | 92-octane w/octane booster or 100-plus- | 2-degree retard | One or two heat ranges colder |
| 150-plus hp | 82/91 | 105-plus-octane racing fuel | 4-degree retard | Two or three heat ranges colder |
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