Performance up-grades

[gm42]

Hey Guys,

Are there any inexpensive performance up-grades that can be done on a 2009 G37 Sports Coupe in increase horse power and torque?

Thanks,

Geoff

[gm42]

Thanks,

Can anyone give some specific direction?

Geoff

[Poyzinous]

stillen intake and exhaust maybe?

[G_whizz]

Depends how much you want to spend.

Look at Cy044baseballs sig. He has a nice MOD list of go fast parts

http://forums.g35club.org/zero...26807

[LuckyLuke]

This is not my car.. I found this on the internet..

"I have a g37S 5peed automatic.

Fi cat back/fI H.F.C.'S/Stillen stage 3.

I had cobb installed with stage 2 map, but for some reason the car responded much better with the stock map.

1st pull 310WHP. 2nd pull 305WHP.3RD PULL 308WHP.

AFTER REMOVING COBB STAGE 2 & REINSTALLING BACK TO STOCK MAP.

1ST PULL 318WHP2ND PULL 315WHP.3RD PULL 325WHP. "

[suby01]

only parts that you can get for bolt ons are

intake. exhaust high flow cats or test pipesheaders grounding wiresunderdrive pulley (not recommended)tune

with all that should be a good 50whp increase.

[johnparkyourcar]

forced induction

[suby01]

yess i forgot a twin turbo setup. at around $14,000. and your set.

[C-Kwik]

oh and here is another example of engineer vs accountant... why does the 350z have a struct tower brace and the g35 doesnt? yes the FM platform is very stiff by it self... yes the 350z is a slightly different market... but if an engineer had his/her way the g35 would of had a struct tower brace at a minimum, if not other bracing... i mean the car cost more than a 350z already...

Off topic here, but that's not necessarily a good example as a STRUT tower bar has much less benefit on a vehicle that has no struts. To be clear, a strut is a shock that bears lateral loads. Basically, the strut tower is reinforced sheet metal whose attachement point to the upper bearing plat of the strut is located some distance away from the frame. This introduces plenty of room for flex when a high degree of lateral loads and to some extent, vertical loads or present. Strut bars help to spread the load out by transferring some of the load to the other strut tower, which reduces the overall flex.

In a vehicle with a double wishbone suspension, the lateral loads are transferred through the chassis through the suspension arms. In particular for this case, the upper A arm, whose mounting points are typically on the frame rail itself, which provides a huge advantage over a strut based suspension already. The only load the shock tower sees will be the vertical loads placed through the spring and shock by the tire's interface with the ground. Adding a strut tower bar in such a case would yield negligible benefits. It would add some additional rigidity of course, but it would be indirect as far as the suspension is concerned. The proper bracing for a double wishbone would be to connect the mounting points of the upper A arms together. In such a case, there was probably a good deal of marketing value in placing placing a bar into the Z considering its target consumer. Of course, this would still prove your case in that the accountants would likely dictate its use over engineers as an engineer might see it as unnecessary or poorly placed.

[audtatious]

Hey Guys,

Are there any inexpensive performance up-grades that can be done on a 2009 G37 Sports Coupe in increase horse power and torque?

Thanks,

Geoff

Back on subject.....

"Inexpensive" can be subjective here. What do you consider inexpensive? Intakes for the G37 start in the $350 range and go up from there. I know of nothing cheaper than the intake at this point (unless you simply replace the air filters with K&N or something...does that even increase HP? IDK ).

There is at least one duel-turbo kit on the market for $8k which includes everything from the IC to the fuel pump.

[pfarmer]

Back on subject.....

"Inexpensive" can be subjective here. What do you consider inexpensive? Intakes for the G37 start in the $350 range and go up from there. I know of nothing cheaper than the intake at this point (unless you simply replace the air filters with K&N or something...does that even increase HP? IDK ).

There is at least one duel-turbo kit on the market for $8k which includes everything from the IC to the fuel pump.

As far as K&N possible from what I have read. I wouldn't state by much. One of the things I have read about older K&N is that when clean they pass airflow easier than stock, but when dirty they may be more restrictive. When clean they may not filter as well, when dirty they may filter better. What counts then is the average capability which I have read may be less than stock.

Perry

[pfarmer]

Back on subject.....

In the case of nearly any of these upgrades there may be spots for at least certain manufacturers where the torque and/or horsepower curves are below those of the stock.

This leads me to think that a good first upgrade is to install something like an OBD-11 device to record your driving habits as is. From here you may be able to take this information such as speed, rpm, etc. and plot against the verified results of various upgrades such as intake manifold, exhaust, and of course combinations such as Stillen's packages.

An intake that benefits one type of driver may well be a negative for another's driving habits. Bang for the buck matching upgrades to the driver may give the best results in the end.

Perry