MUST READ: How to turn a new Infiniti Q45 into an E55

[SonzofGod]

OK, well I called a different Infiniti dealer this time, Bommarito, and they are checking into the update and getting back to me.

I was able to check out my pedal assembly and it is the OLD style with the spring action. As for the TCM reprogram, I am assuming it has not been done since the pedal has not been changed.

I was able to do a little test driving last night in my neighborhood...he he he

I turned off the traction control (VDC?) button and burned out to about 40 mph. Guess the neighbors are awake now. The burnout was nice, not too loud though since Im running Goodyear Eagle RS-a which are a soft tire.

The Q is almost twice the horsepower of my 97 max! Yikes! I am looking forward to hearing about this update regarding the pedal and TCM reprogram.

I will post again if I find out anymore info. Thanks Jason!

Nick

[Jesda]

Let me guess, the first dealer that didn't know what was up was Plaza Motors in Creve Coeur? They suck.

Patrick Baumann at Bommarito is a good guy.

[This should be moved to the Q45 section and made a sticky.]

[Louis123]

I have a 2002 Q45 Sport that has a build date of 05/01.

My initial experience with my Q's performance and acceleration was disappointing. When the car was in 5th gear and I would press the accelerator pedal to the floor, the car would hesitate for a second, as if the transmission was unsure of what to do next. My initial conclusion was the same as yours: the transmission's programming must be defective. I was unaware of the ITBs, however, so I did nothing.

A second disappointment was the quality of the tires. The rear tires seemed to loose traction quite frequently, as I have what has been described as a "lead foot". After several such episodes, I noticed that the feeling of the traction control disengaging the drive wheels was similar to the feeling of the transmission hesitation I was experiencing.

When the time came to replace my tires, I chose the Goodyear F1 Eagle GS-D3 W-rated tire. This is the same tire as used on the Corvette. Advantages: Outstanding wet and dry traction and handling. Disadvantages: more road feel; no more silky smoothness.

Afterward, what I thought was transmission-hesitation disappeared. Flooring the car resulted in instanteous and tremendous acceleration, as the tires grabbed the road. I also drive a supercharged 2001 Jaguar XJR (0 to 60 in 5.3 sec.) and I can tell you that the Q is now nearly as fast.

So, while there are certainly Q45s that need the ITB-2048 updates performed, not all of them need this update. The text of the updates have flow charts to help identify the cars that need them.

By the way, be careful when testing for transmission-hesitation. The Q covers a lot of ground in a hurry when you floor it. I went from 40- to 80- MPH so fast that I nearly rammed a Lexus SC430 that had just passed me a couple of seconds earlier. I'll bet the driver was impressed with the Q's headlights coming at him like a train engine

Modified by Louis123 at 12:29 PM 12/22/2006

Modified by Louis123 at 2:57 PM 12/22/2006

Modified by Louis123 at 4:05 PM 12/22/2006

Modified by Louis123 at 4:08 PM 12/22/2006
Modified by Louis123 at 4:10 PM 12/22/2006

[szh]

When the time came to replace my tires, I chose the Goodyear F1 Eagle GS-D3 Z-rated tire. This is the same tire as used on the Corvette. Advantages: Outstanding wet and dry traction and handling. Disadvantages: more road feel; no more silky smoothness.

A good choice of tire! I use it in my 2003 M45. However, I use the 245/45-18 in a 100W load index and rating. Gives me a bit more load index (these cars are heavy!) and still has the high-end performance in wet conditions, that I want!

Z

[Louis123]

I use exactly the same as you: 100W, 245/45-18. I mistakenly typed "Z" and not "W" above. I will correct it. Thanks.

[thecrappster]

If you guys are really that concerned with optimal shifting points, wouldn't it have made more sense to buy a car with a real transmission in it? What's the point of having power under the hood that you're not in complete control of?

Silly rabbit... Shifting is for real drivers!

[Ozzie]

If you guys are really that concerned with optimal shifting points, wouldn't it have made more sense to buy a car with a real transmission in it? What's the point of having power under the hood that you're not in complete control of?

Silly rabbit... Shifting is for real drivers!

What's the point of you posting in a section of the forums, about a car which you know nothing about?

Stick to your honda fella.....

[Jesda]

If you guys are really that concerned with optimal shifting points, wouldn't it have made more sense to buy a car with a real transmission in it? What's the point of having power under the hood that you're not in complete control of?

Silly rabbit... Shifting is for real drivers!

You drive a Civic. Suck my balls, tard.

[mcrews]

Man, life must be slow in clinton, sc. Digging up a six month old thread in a Q45 site.next thing you know he's gonna post pics of is little "daily driver" on 22's!!!!

maybe he thought "q45" stood for "Quick shift between 4th & 5th" and thought he was on some transmission web site!!!!

mcrews

[Haitian_King]

Holy ****. LMAO.

Good one Jesda. Sounds like he touched a nerve.

[thecrappster]

You guys all sound to angry to talk to. Hondas are crap for performance. It just gets me where I need to go. Life IS slow in Clinton..... VERY slow.... slow. Honestly, I don't remember HOW I came to this thread.... OH, I am looking to get a q45 motor for my 300zx. It's getting up there in miles, and I want to start a new project on my project car.

BTW, I drive the Honda because I have to drive an hour and a half to go to school and back (wife doesn't want to move) and my Sentra is too nice to rack up regular miles on and my 300 already has miles racked up on it. I consider Nissans too good for such.

But I do loathe automatics in vehicles that are fast.

:-P

[mcrews]

If you guys are really that concerned with optimal shifting points, wouldn't it have made more sense to buy a car with a real transmission in it? What's the point of having power under the hood that you're not in complete control of?

Silly rabbit... Shifting is for real drivers!

First of all, welcome. enough of the nicities.

YOu said "wouldn't it have made more sense to buy a car with a real transmission in it? " right?on your first post you are jumping in our face because the car we buy doesn't have a stick shift!!!!!!!!!!!!!! wtf

hey crappile, read the thread. there was a bog or lag or flat spot in the computer program on the trannie. Thanks to Jason's efforts many 02 owners, including myself, get to experience the true shifting of a true luxury sedan. Thanks to the correct control unit being installed. at no charge. If we wanted stick sh*t rice racers we would and could have bought one or two or three. We wanted Q45s.I did not buy a Q to be shifting....get a life.

look for the "2 door Q45" post if you are interested in a 45Z car.

but don't come in with your stick shift mentality and knock us for the car we drive. we are a little farther up the food chain than that.

mcrewsq

[Ozzie]

......also, may I add something here......Look at the fastest drag cars on the planet..... what kind of trans do they use?

AUTO!!! (There's a reason for this.......)

Any auto can be built to shift quicker.....And end up being much quicker through shifts compared to a manual, and cheaper than doing a conversion.

If you expected us to take your comments in a different way, then you should have written your post in a more effective manner.It's easy to blame us for "being too angry to talk to", but did you ever stop to think that it may be your fault? (because it is your fault...)At least I said what I had to say in a nice manner......

And don't rule something out until you do a little research on the subject you are discussing....

[ScottJackson]

Actually, the fastest drag cars have no transmission at all. They're a 10-15 plate clutch that's computer controlled to engage more and more as the dragster makes the 1/4 mile pass. That said, of drag cars that have a transmission, the fastest ones run something in between a manual and auto (Jerico, Lenco...). For street cars, yes, a manual transmission is generally more fun than an auto EXCEPT for fast street cars. Above 500-800hp (depending on chassis/suspension/tire setup) and most guys go from a built manual (TKO, T56, Richmond...) to a built auto trans. The truth is, if you can break traction on a whim and things can get hairy in a second or less, the manual becomes a pain more than an extra lever to row about while driving.

[Haitian_King]

Question.

What would win in a race?

A stock g50 or a stock y33? Only asking because I just dusted a y33 on Rt. 130.

[maxnix]

Anyone have the current combined ITB number for this update?