1KZ in my prado has a horrendous blow. Does 120-30 km/h easily with ac. No black smoke or anything. I'd say, Na cher malanga noo. The only thing i did, was install a blow pipe to save my turbo. Salute to this engine. i'm gonna get this blow fixed ... someday, but until then, i'm not going to disturb any setting of the pump or nozzles, didn't even change the due ATF. I recommend the same to you. Chalao jitni chalti hai, just keep an eye on the temperature gauge in hot summers, use a decent engine oil and change every 3-4000 kms. It will never dodge you.