sccastsracer

There is no finer header & downpipe made anywhere than the one made by Mazzuri. No other header even is in the same zip code as to REAL HP & torque increase. They are not giving they away, but they are THE best in every area and most importantly in being REAL equal length tubes... FITMENT & LONGEVITY. They used to sell for a grand, now you can get them with the d pipe for 600.00. Trust me......as soon as you have installed your new purchase of those 'particular" other headers......just take a lil peek under your ride & enjoy (NOT) the "lack" of ground clearance...and all of the funny "noises" that those "other" headers produce.....also keep a record of how many times you scrape & smash them...you will then understand why.."ya get what ya pay for." Sorry....there is more to producing a quality set of headers than just tackin' pipe. In our case of the IS....fitment IS everthing. In this case...cheaper is NOT better....and can be very "painful." Oh, by the way.....Mazzuri owns IS300's....hummmmm....... Good luck anyway...I wasn't try to ruin your day..just saw your posting & wanted to share some helpful "knowledge."

Let the dealer flash it.

I bought one the very first IS300's to be sold in Houston. As long as the alignment is within specs...you WILL get inside tread wear. That IS normal for the handling characteristics of the car. As the tech said, there are no camber plates available. Just be VERY sure that the car has not been wrecked and the tech aligns to SPEC! The toe setting on front & back is also very critical to premature tire wear...go to well know & GOOD alignment shop known for good & honest alignments & watch from a little distance ...some tech that are jerks will lean / hang on car to make the spec "appear correct" on your "printout sheet that they SHOULD give you for your records...they are lazy & either don't feel like doing it right or don't know how...I was a GM Tech for 18 years & Lexus tech for 3..so I DO KNOW the tricks! LOL! Just be aware that no matter what ..inside, front tire wear is to be expected. It SHOULD NOT be to bad though. Make sure to rotate your tires front to back & back to front about every 7,000 liles or so. You SHOULD be able to get pretty good mileage from GOOD quality tires & stock rims....or rims with the same "offset" as original. I think I put 28k on mine first ones. The Goodyear Eagle GSD-3 is a GREAT tire on the IS! Having had mine for over 6.5 years...I have see, read & tried many tire. A 225/45/17 is a perfect size. Even the 215/40or45/17 is as good. AIR PRESSURE is also critical! 33lbs! I SCCA Solo Autocross mine and use Falken Azenis 615's ...there is no better street legal tire that can compare...period! I would enjoy a set of the Falkens for the daily use, but I like the GSD-3's because of their UNMATCHED rain capabilities. I drive from Houston to AUstin, TX. & San Antonio, TX. regularly, pulling my 8x4 bed / 12'long trailer with my tool chest, race tires & 99% of the time I also have my TaG USA Spring Racing Kart on the trailer too. WIth GSD-3's I do not hesitate one instant to drive 80+ in the rain. Those tires are AMAZING in the rain. I also use them (if needed) when I must race in the rain, if there is any puddling...if no puddling I use the Falkins. My alignment will scare you....I run -2.85 camber in the front, 1/16th toe and in the rear -2.35 camber & 0 toe. Of course I race mine & other than trips to race tracks & working for myself..I don't put a lot of miles on the car...I only have about 63k on it after more than 6.5 years. I also have Hotchkis sway bars & Hotchkis lowering springs and adjustable sway bar links..& a few other small items.....class rules you know!