Klaus9

Hi all,

Has anybody here owned or driven a g37 and can compare the throttle response of the is350 and g37?

I'm very disappointed in the slow throttle response and TCM of the g37 and am considering jumping ship to the is350 (older or newer models, still haven't decided). Is the IS350's throttle response better?

For the record, I am not talking about the g37's slow transmission itself, I'm talking about the way the TCM is programmed.

SC400slide

iTrader: (11)

I would say that they are both similar in throttle response in general. The G37 might feel slightly quicker due to the higher redline. You should drive an IS350 and see how it compares, maybe there is something off with your G?

AMIRZA786

I've beaten off the line both a G35 and G37, The G37 was a 2 lane freeway entrance that ends in one lane and the G35 was stop light to stop light. I'm assuming both were stock. The G35 was a 6 speed MT, don't know what the G37 was as far as transmission. The G37 actually has more power than the IS350, the problem is that it's heavier, a lot of Nissan's carry a lot of extra weight, which would give you a slightly less throttle response. Probably in a quarter mile run it would beat the IS350, but I can tell you 0 to 60 that extra weight gave me the edge. I have a 2010 IS350 Sport, no power mods accept F-Sport intake.

Just as a perspective, a guy I know who has a Youtube channel did a Honda Civic Si vs his friends Nissan 370z, and he beat him in every race (all were rolling). His Si is a 2019 that has a tune, dp, intake and exhaust. I was pretty surprised because I know I can beat his Si. It was mainly due to the 370z's weight. Same engine as the G37

Klaus9

Thanks for the input... do you guys know how the two compare with the actual throttle though and how they are programmed? With the g37, there is a noticeable and frustrating 2 second delay between depressing the accelerator and the car moving. The way it is programmed, it is constantly trying to save MPG. From everybody I've spoken to, it seems to be a widely known issue people are dealing with based on how the TCM is programmed by the computer. For the record, I'm referring to auto transmissions in regular D mode.

Klaus9

There are several cars I'm considering jumping ship to... newer or older IS350's, BMW 335i's, and Audi A6 3.0t. I've heard the Q50 has the same dopey shift logic, so I'm avoiding that. I've decided instead of test driving all these cars, I would join their respective forums and ask around a bit first.

AMIRZA786

Out of the list you wrote, I personally would stick with either an older IS350 with lower miles or the Q50 with TT 3.0L V6. I don't what your budget is, but my friend picked up a 2018 Q50 Lux with only 30K on it for $25K. That's a steal. They are definitely faster than an IS350 and have a ton of low end torque. Just stay away from German, whatever you do. Anyway, I think you won't go wrong with either...although my preference is the IS350

AMIRZA786

This should give you an idea of throttle response: https://photos.app.goo.gl/EE3wwiyLWWvWqoTe8

This was before I changed the stock intake to an F-Sport intake. Now response is even better

Klaus9

Very cool - thank you

Patton6964

iTrader: (3)

I had an is350 which I ended up selling for a g37. I became friends with thr guy who I sold the 350 too. Later down the road, my g37 had Full bolt ons and a tune. The 350 walked away from me with his entire family in the car. I sold the g37 soon after for an isf....I'd never own another one again.

ncatona

lol 😭😭😭 thats too funny

AMIRZA786

Before the pandemic I traveled frequently to my companies San Antonio TX office, so I've rented a ton of cars. One of them was a Nissan Maxima. Great car, comfortable, with a quieter version of the engine in the G37. Problem was this car was so heavy it cut into the throttle response and handling. I think more than trying to achieve better fuel economy its held back by sheer bulk. The IS350 is no skinny model itself, but definitely feels much lighter.

Regularcars called the G35 and G37 "Lexus light". I personally don't think they are bad cars, but Lexus autos are superior IMHO. Whatever that's worth​​​​​

GrizzlyMan

For BMW, join 1addicts, IMO is a site for the insane.
I almost bought a 135i, but after readingnd all the horror stories of cracked plastic valve covers, bad solenoids, fuel pump, power steering, and even wiper motor failure and I mean, a constant among many of their vehicles. The N54 actual twin turbo, their compressors fail, wastegate issue.
And on some instances rod bearings on vehicles with pristine vehicle history. YTubers will say again and again, as a lease yes, but to own, a money pit.

good luck in your choices, those Q50s is a luxury sedan, not really sporty, but so easy to get power of those turbos.

AMIRZA786

Let's not forget Valve Stem Seals, which is a constant costly problem on especially M5 series. I was once a German car enthusiast, now I wouldn't touch any European vehicle with a 100ft pole unless it was a lease. A very short one.

The Q50 seems like a very nice car, but I'm wondering why they are so damn cheap, price wise used. My friend picked an almost brand new fully loaded 2018 Q50 Lux with only 30K on it last year for $25K. Nothing wrong with it, title checked out, warranty intact. An IS350 that year with those miles are in the mid to upper $30's

Patton6964

iTrader: (3)

My G was actually a great car, I never had any issues with it while I owned it. I did really enjoy it, but it was without a doubt slower than the is350.

So in my book lexus is a no brainer.

Better reliability, quicker, better gas mileage (I had the 5 speed auto), better looking as well.

Repo

Worst "tip in" throttle response I have ever experienced was a 2005 Mercedes Benz C240 (AWD) formatic - it was DANGEROUS in its ridiculous S-L-O-W response from the time you FLOOR the accelerator until it friggn moves. It was maddening. My wife's car (until it left our garage) and she is a mellow . . .normal driver - and even she felt it was lethargic. All I can say in response to your question is TRY before you buy and be seroius about your road test / driving eval - it can NOT happen in an around the block try before you buy.

PS: I really like my 2008 IS350 "tip in" . . .she ****s and gets : )