Okay....I know this is gonna sound crazy. Everyone says that it's a good idea to baby your engine for the first 1,000 miles so that the parts and fluids can have enough time to mesh properly. I noticed when I first got my IS 250 that it was a little boggy on the low end. I recently passed the 1,000 mile mark and things seem different now. The gearing seems to have changed some to give the car more low end power. Do the folks at Lexus put some sort of regulator on the cars to discourage engine abuse for the first thousand miles? I need some input because there is a profound difference. My car is wicked 'torqey' now. No, the ECT isn't on. Any thoughts??????

 

some can argue a moderate break in (not redlining it, not babying it, but mid range rpms) is better, who knows, break in procedures are very hard to test and verify. Your car is dynoed and driven from the factory anyways, so I dont see how babying it will help any since its already been redlined on the dyno

 

The transmission and fuel injection system are under computer control. They "learn" your driving style, etc., to provide for maximum fuel economy and performance. Over time, the computer will make adjustments to compensate. Your observation shows the learning process. Our IS was the same way -- a real dog when we drove it home for the first time, but after a couple days, the responsiveness improved dramatically.

 

Hmm...then how do I explain the severe change in power after the first 1,000??? That's the weird part....

 

true dat . . . true dat . . .

 

Very sweet. I thought I was being an idiot. I love this freakin' car. New wheels and tires next week. Will post pics....