supra turbo mk3 tuning

[wesbam1]

hi, just bought my first supra its a 89 turbo ,but am looking for more but reliable power could anyone tell me what the most power I could get using a stock turbo,panel filter ,3inch full exhaust system, I was hoping for between 280 to 300 hp and am wondering if the standard pistons, rods,bolts etc would be ok for this power .what would be the best way to turn the boost up slightly on the turbo do I need a new ecu or would the stock unit be ok chipped ,hope you can help thanks.dale

[dcrusupra]

You could get into the 300 hp range with the stock turbo. There is 2 ways to turn up the boost. The cheap way, and the better way. The cheap way is to shim the wastegate (search) and the better way is to buy a boost controller. The rods, crank, pistons, and mostly everything on the engine are good until at least 500 hp. The only weak point is the head gasket. So you might need to retorque the headgasket if it wasn't already changed out by the previous owner. Which it should have been done by now. If you're not sure, call him back up and ask if he has.

[wesbam1]

thanks for the info never thought the engines would be that strong ,head gasket was replaced at 65000 its only on 70000 genuine miles now would the standard gasket last with just the 3inch exhaust done on its own as I will use a mhg when I up the boost on the turbo,do Ineed to chip the ecu or does the boost controller do this anyway, are the fuelling fpr ,pump , injectors ok as stock .one last question honest,will the standard cooling system be ok at 300 hp.as you can tell im completely new to the world of turbos ,thanks for the help.dale

[Burn N' Up]

The cooling system will be fine, just make sure your oil cooler is good to go and the turbo will be happy. If your new to turbos you should know that you never drive and then shut down, always let the car idle a bit to blow off extra heat and get the turbo temps into the right range, otherwise you shut the car off and bake oil in the turbo. Change oil at least every 5K and if your being rough on her the manual recommends 2500. Flush the coolant system and make sure everything is running right there. If you just got the car catch up on the basic maintenance, brake fluid, tranny fluid/gear lube, rear end, etc. the 7MGTE is, like alot of Toyotas, very over designed so its solid even with upgrades and abuse.

[FullOfProblemsMKIII]

ohhhh shyyttt....so i can push 300+ with little stuf done huh?? damnn....how far will i go with a fel-pro HG??? with like 12lbs boost?

[Burn N' Up]

You can do alot... if the car is already in excellent stock condition. Valves still sealing right, head not warped, everything in the crank in order. Trying to slam power out of car that isn't in good condition means you're gonna break something. Maintenance is key