New 06 G35 owner with questions

[06NYG35]

A few weeks ago I got a black 6 Speed. I have to say I love the car. I previously had a 2003 350Z that I bought new. I think the quality on the G is so much better.

I do have some questions in comparison to the Z. First the Z exhaust was louder, especially abouve 4K. Why is that? Is it due to the intake tube? Is it difficult to put the Z tube on?

Second, the Z felt faster. It seemed to pull harder. Are the G's geared differently then the Z or is it due to the 260 torque compared to the 274 I had with the Z? I know I have more HP now. Maybe the G is just as fast but it doesn't feel like it? It doesn't put you in back in the seat as much as my 03 Z. I had no mods on the Z.

What are the least expensive items to make the car pull better and faster? Plenum spacer? Hi Flow cats?

Any help or suggestions would be appreciated.

Thanks
Pete

[G35maniacG35]

The only thing I know is that the G is much heavier than the 350Z

[Skaterbasist]

Yeah like G35Maniac said, the g35 is just heavier. Thats why its a bit slower than the 350z.

Dont know about the exhaust tune comparison

[06NYG35]

Thanks guys. I was thinking about the weight difference. I had a base Z so that is one of the lightest ones.

I know the exhaust is quieter becasue I am in the same garage and can tell the difference over 4K. The G just gets quieter over 4K. Maybe it is the intake tube.

[gnbtween]

I think there is only 150 -200 pounds difference between Z and G coupe...
the G coupe is bigger than the Z, but it is mostly interior space, just air?

[Skaterbasist]

Originally Posted by 06NYG35

Thanks guys. I was thinking about the weight difference. I had a base Z so that is one of the lightest ones.

I know the exhaust is quieter becasue I am in the same garage and can tell the difference over 4K. The G just gets quieter over 4K. Maybe it is the intake tube.

The intake tube has nothing to do with the exhaust sound. They create 2 independant sounds.

I havent been able to tell the difference between the Z and the G in the overall sound (intake, exhaust, etc). But then again Im not that familiar with the Z since I havent really been in one. You have, since you own both, so you should be able to tell.

[echephron]

the sound difference over 4k rpm is due to the intake tube... z tube is 3 inches inside diameter and has no baffles... stock g tube is 2.5 inches inside and had baffles which dampen its sound levels... this will cause you to hear less of a "roar" at higher rpms... granted, it's not your exhaust...but, intake that you're hearing...

the difference in torque when comparing your z and g is this...(i'm guessing you have the 6mt)...lower plenum... the g's AT lower plenum has narrower runners and causes less of a pressure drop than the 6mt's lower plenum... if you purchase Motordyne Engineering's MREV2, you will be getting a polished version of the AT lower plenum... couple that with a 5/16" spacer and you have the TQ that you're used to while adding additional horse to your existing 298... the MREV will add at least 18ft/lbs of TQ taking you over what you had with your z...

that said, i have this mod and was not impressed with it in the beginning... it took a trip to the stealership, finding out that my car was running very lean (causing spark knock) and having that issue resolved (peice of string on the back of MAF sensor causing issue!!) for me to actually feel the MREV's true addition to my vehicle... i must say that it now feels like an AT... give it a try, you won't be disappointed...

[Mr.GEE]

How many miles on your G? My G felt the same way until about 7K-8K miles. I guess the engine and drive train were a bit tight when new but get better when broken in.

[06NYG35]

Echeohron,

Thanks for the info. Should I go with the Z tube or just a different intake? I want that sound back over 4K.

Also, does just the plenum spacer help with torque? How hard is it to do both parts? Did you do it yourself? If you had it done somewhere, what was the price to install both? I would think the lower plenum is tough to do?

Mr. Gee,

1500 on the mileage. It is very new. I was thinking it was going to take some time to break in. I am just looking for little things to do to it. Not go crazy with money. Thanks.

[ISMSOLUTIONS]

Hey -

First - regarding the exhaust note comparison:
The 2 cars have different mufflers. The rest of the exhaust is the same, other than some pipe length. The muffler on the Z is a higher performing unit than the G - it does put out 4 DB higher note than the G as well - SO YOUR NOT DREAMING. The G is a luxury version of the car and is also much better insulated, so you will again, not hear as much of the exhaust either.

Second - the intake tube - YES the z-tube will make a huge difference in how the ENGINE sounds at rev points, under throttled conditions, and for less than a $100, is a great noise maker - it also does add about 3HP on the dyno - believe it or not - and those that know me will believe it.

Third - to get any kind of decent bang for the buck on these cars performance-wise - you have to MREV++ you car, Stillen CAI it, z-tube it - that will handle your air intake needs quite fine - unless you want to go FI.

Fourth - EXHAUST - once you breath the air in - it has to get out. This is a real chore of a task to deal with, unfortunately. If you love the sound, and want to enhance it only - resonated testpipes and your set. If you want a catback added to that...you have to listen to other's cars and decide for yourself. We have a great system - but I'm not here now to market that, so I wont...but I kinda just did..sorry.

FIFTH AND LIKELY THE MOST IMPORTANT!!!!
BUDGET - HOW MUCH ARE YOU GOING TO SPEND??? You have to plan the whole car out - don't just jump on certain mods. Plan them in logical order for benefit and price at the same time. Some mods will hut certain portions of performance, when combined with others the real benefit is seen.

Hope this helps...

Rick

[06NYG35]

Rick,

Thanks for the info. I knew the exhaust was not as loud. I also understand the car is insulated better for sound. The Z tube is a definite for me.

Do I need the plenum spacer with the MREV? It sounds like the MREV is the way to go to get the torque back.

I like the sound of the exhaust so I am not sure I want to change that. Is there a Nismo exhaust for the G or is that the Fujitsubo?

I probably want to stay under 1K for spending for now. I guess with that said I am looking at a Z tube and MREV and the spacer if I need that to.

What is your exhaust system and the site?

Thanks

Pete

[ISMSOLUTIONS]

Originally Posted by 06NYG35

Rick,

Thanks for the info. I knew the exhaust was not as loud. I also understand the car is insulated better for sound. The Z tube is a definite for me.

Do I need the plenum spacer with the MREV? It sounds like the MREV is the way to go to get the torque back.

I like the sound of the exhaust so I am not sure I want to change that. Is there a Nismo exhaust for the G or is that the Fujitsubo?

I probably want to stay under 1K for spending for now. I guess with that said I am looking at a Z tube and MREV and the spacer if I need that to.

What is your exhaust system and the site?

Thanks

Pete

You wont want the nismo - drone city and fuji either. MREV - call Tony at MD to get the right Rx - spacer is a must - your choice on the 1/2 or 5/16 - depends on if you want to use the engine cover or not and if you want the most power or not.

search the board for Fast Intentions and go to www.fastintentions.com

PM me if needed...

Rick