Basic Performance Upgrades. These modifications are: A full length three inch down-pipe (with or with-out high flow cats), 3″ (75mm) or bigger cat-back exhaust system, raised boost (18psi), and the required boost cut eliminator (GReddy BCC) needed to achieve that boost without activating the factory fuel cut-off at 14-15psi. These are the modifications that have proven to provide the best HP-to-$$$ ratio.
Chassis, electrical, and suspension components should see little effect on reliability on street driven Supras. The stock 2JZ-GTE engine should hold up pretty well to this power level. Just how long depends on maintenance, and how hard you drive it, and how often. But typically Supras can go for years at this power level. The transmission reliability will depend on whether it’s an Automatic or Manual. A stock automatic will not hold this much power, a built transmission will be required, and it’s reliability will depend on it’s design and construction. The 6spd Manual should hold up just fine, as well as the rear differential and axles.
Get it in writing. Any promises are meaningless unless you have them in writing. Car salespeople at car dealerships are notorious liars. What the seller says and what a warranty really covers can be 2 entirely different things. I was sold a car through eBay by Farmerville Motors in Farmerville, Louisiana and the salesman promised that the car would pass inspection in my state. It didn’t due to a bad OBD system. The salesperson at Farmerville Motors stated that the entire emissions system on the car I purchased was covered. It wasn’t. At a local GM dealership it was found that only the catalytic converter was covered, not any part of the OBD and emissions system. Get any promises in writing.
When the pressure reaches say 30-60 psi, you turn the key and go. You step on the pedal you send more energy to the electrodes and thus more vapor to the catalytic converter recycling cylinders i.e fuel vapor on demand.
HHO “hybrid hydrogen oxygen” is what we’re after. This little cocktail is going to increase our fuel efficiency, and is extracted from water. You can run your fuel leaner when you introduce HHO, hence the added miles per gallon. Pilots lean their fuel when they fly above 10,000 feet, because running leaner saves gas. Chances are your car isn’t flying, and is under more atmospheric pressure than those planes, so we’re going to introduce HHO to achieve the same effect. We’re going to lean your fuel with it, you are going to use less fuel. HHO is going to burn the fuel you would normally just cook and waste in your catalytic converter too. So there are two bangs for your buck, and we haven’t even started yet.
There is some debate on this subject. There are rumors that 180 can be achieved. But by going with the numbers, 168-172mph in stock form seems possible.
So, how does the information above help you? The next time you visit an auto repair shop or dealership, ask the technicians about the published flat rates for the work you need. Then, ask them how long they expect the job to take. By doing so, you’ll have the right expectations when you receive the bill.