Infiniti G35 Turbo Charger GUIDE! ( 2003-2006)

[Gimli G35]

For those of us G drivers , Have you ever wanted to get more power? Bought ALL the other engine mods? Looking for FI?I work at my brothers auto repair shop doing installs alot so here is my advice Here is my guide on which FI you should get , im not really going to go into SC kits very much , they are much easier to get working.

The Chargers we can get!

Turbonetics - 6k - SINGLE TURBO! - 8 PSIGreddy - 6.4k TT - 1.4k Intercooler Upgrade Kit - 5.5 PSI-8 PSIJWT ( Must be purchased at authorized installer) - 6.8-7k - NO LAG Keep Stock Bumper - 6.8-7.8 PSIAPS - 7.5k - 8 PSI+PE ( Power Enterprise) - 8.5k - 4.5 PSISFR - 7.5k 6.7-7 PSI

Extras You Might Want To Get\Have To GetUpgraded ECU (Optional)UTEC\Anyother EMU - $700-1.6KFuel Pump Upgrade - $350Testpipes \ HFC - $300-1.2KLOW Compression Pistons (For High Boost Setups) - $Unsure$Boost Controllers - $500-1kBoost Gauges - $200-500Many More that can help you.

ALL the PSI ratings are from manufacturer. Tested at higher PSI

JWT has all the included valves \ fuel pumps needed and unbelievebly they dont require you to have ECU upgrades!

Most of everyone would like a TURBO with NO LAG \ Low lag. That has a downside though , your Turbo may spool up at 2400 RPM , but it loses its boost once you hit red line. The Greddy kit is a very good kit because it spools at almost 2600-3k RPM , allowing you to lose out a little on first gear , but regaining all your momentum while shifting.

Here are some DYNO results ! ( These test are ran on STOCK engine , with just Fuel Pump mods on a few, Spark Plugs, Exhaust, Intake, and HFC)

Turbonetics

SFR

PE

JWT

Greddy

APS

Quick Video ! Of what a Greddy TT and a Semi Built Engine can do. ( this is one of the Georgia Z's)

http://youtube.com/watch?v=HXVexQ2q554


Modified by Gimli G35 at 11:28 PM 7/19/2007

[C-Kwik]

Great write-up. We'll sticky this thread.

I'm diggin the JWT's dyno myself. It is besting Greddy's kit pretty much everywhere. None of the others come close.

It would have been nice to see the SFR and PE kits at 2000 RPM though. Those two seem to get up to the boost threshold early as it's already on the downward slopes of the torque curve at 3000 RPM.

[Gimli G35]

JWT turbos are small , Fast Spool rate but it loses power if your pushing it very hard - JWT did make upgrade kits for a reason

[FamilyZ]

Any of these carb legal in CA? I know the greddy is not.

Maybe I'll just register my car in a different state

[Gimli G35]

JWT is the only trying to be CARB legal

It is very very very silent tho , sounds like the car is stock , no loud BOV sounds .. good for the SLEEPER car

[AddictionG35]

Nice! +1 Gimli! Sure helps out with deciding what kind of Turbo I want to have wet dreams about until I can actually afford it.

[Gimli G35]

Make sure you check out the video .. i almost cried when i saw the 5k+ RPM

[FamilyZ]

Niice!

[C-Kwik]

JWT turbos are small , Fast Spool rate but it loses power if your pushing it very hard - JWT did make upgrade kits for a reason

Unless you're intent is to turn up the boost later, the size of the turbo is irrelevant. In it's bolt-on state, it looks to be making more power period. I'd venture to guess that if a person was stepping up to more boost, you could probably find much better suited turbos at those boost levels than any of the ones included in these kits.

[Gimli G35]

The Greddy turbo is built for 10-18 PSI of boost out the box

Just have to get low compression pistons and a better fuel pump

[C-Kwik]

I think you're missing my point. Out of the box, the JWT simply performs better. In other words, at the boost level the kit was designed to perform at as a BOLT-ON, The JWT kit is a more efficient system which nets more power everywhere.

While I'll reserve any actual judgements of my own on the Greddy turbo and it's use on the VQ until I can see a compressor map of the TD05H-15Gs, I'd speculate there is likely a much better suite GT turbo out there for those kind of boost levels. Not to mention Mitsu turbos are not as robust as any of the Garrett turbos (Garrett uses bigger shaft and thrust bearings which can lend itself to more longevity). No doubt that Greddy put together a fine kit. But it's performance as a bolt-on kit is simply not as good as the JWT kit.

[ArEs23x]

this is a great topic because I have been wondering whats the best turbo kit for my g35 awd sedan..but i find turbos for the coupe, then hear that its the exact same engine, so it should work right. Looking at the graph from the top, the JWT or the greddy look like the best ones. are those graphs with everything stock on the car with the addition of the turbo kit, or is that already a modified car. I barely got my 20's on my car and its going to take like 3 months to pay them off, the thing that sucks is i think i messed up cuz i never took in consideration how heavy they were and how would they affect me if i wanted to haul @ss on it. so just to make sure, the turbo's up there are absolutely the best for the g35's because if ima spend over 5k...might as well get the best lol

[Gimli G35]

Some have Fuel Pump upgrades , while others just have Intake and Exhaust , ALL are running STOCK INTERNALS .. when considering the JWT, you can only purchase and get it installed by the authorized shop (which can be hard to find) .. and you might need some extras like a EMU \ UTEC to help with fuel management

[AZhitman]

AWESOME thread... I want to boost my G SOOOO bad!!!!

[Gimli G35]

Would it help if i get a video of a local G35\350Z Expert shop doing an install ...

Be warned .. it looks "easier" than it looks ....

Here it is as i promised

http://youtube.com/watch?v=67BCKVwtXaw

[2thelimit]

Do u have prices on the turbo kits?

[2thelimit]

If anyone has pics of their G35 with a turbo please post them!!

[Gimli G35]

Prices are up there, and you cant see the turbos in a G, unless there mounted different

[joas007]

hey ARES,

I LIKE YOUR RIMS.WHAT ARE THE BRAND? AND HOW MANY INCHES ARE THEY?E-MAIL ME A [email protected]

THANKS

[thechronic]

what would a twin turbo kit do to your fuel economy?

[Gimli G35]

what would a twin turbo kit do to your fuel economy?

well if you get fuel rods \ new fuel pumps , you will lose some fuel econ, and also if you run high PSI, the more air your putting into the engine , you must put an equal amount of fuel

[nuclearcarnie]

Need a little advice here. I have a 06 G35 Coupe MT and plan to add a turbo next spring. I have read aobut people grenading this engine with some of the kits out there running less than 8 PSI. My question is this...I do plan to eventually stroke the engine as well with a new block but in the meantime I want to add the turbo and run it on stock internals (maybe for a year or so). What can I reasonably do without worring about breaking things. I do like to lean on it once in a while but normally I drive my baby carefully so I don't care about hard launches at the drag strip (however I would like the option). I would like to have somewhere around 350 - 375 WHP on stock internals, is this realistic?

Thanks for any info. and hello, this is my 2nd post on this site.

[Gimli G35]

300-375 is "safe" for our engines , just get a kit you think suits your style .. (HUGE = Lag or Small = No Power at high RPM ... sometimes) ... and get a Boost controller! .. they allow you to regulate the wastegates allowing for HIGH PSI - Very low psi ... plus you get the psshhhhhhhhhhhhhh sound going down the street when the Gates get the "Theres enough boost in the intakes!" ...

Many people say our engines can handle 6-7-8 PSI on stocks ... but if you want to keep for a year or longer, i suggest only running 4-5 ..

Also .. PLEASE!! if your getting TURBOS! learn about HeatSoak and how to start your car and drive it \ Turn it off ..

Here is a quick TUTORIAL! Engine on - wait 3-5 minutes (to be safe) to let the oil in the turbos to heat up to operational temps .-----For me i drive with the turbo off for the first 5 minutes----

Before turning off the car either drive with the turbos off for the last 5-10 minutes of your drive... OR just park and wait 5-10 minutes before your turn it off ..

Or if your lazy !! get a turbo timer ( i dont prefer it ... to much programming and crap)

And Last But Not LEAST! Get a performance shop that knows what they are doing .... Ask them how many installs have they done on our engines.. VQ35 (if they say .. what kind of car? - i dont recommend them )

[njjuliano]

300-375 is "safe" for our engines , just get a kit you think suits your style .. (HUGE = Lag or Small = No Power at high RPM ... sometimes) ... and get a Boost controller! .. they allow you to regulate the wastegates allowing for HIGH PSI - Very low psi ... plus you get the psshhhhhhhhhhhhhh sound going down the street when the Gates get the "Theres enough boost in the intakes!" ...

Many people say our engines can handle 6-7-8 PSI on stocks ... but if you want to keep for a year or longer, i suggest only running 4-5 ..

Great info on the posts Gimli. Definitely makes me consider the mod.

I am with nuclear, with the G as a daily driver. Like to drive normal, occasional stomping. Do like the option to hard launch and feel the full brunt.

Your suggestion of only 4-5 to keep for a year or longer got me curious. Are the stock engine internals not going to handle the 6-8 psi? I dont see that much difference in pricing from your post between the 2 ranges, and wouldnt want to skimp on power, but definitely want to keep the car for a bit more than a year. Is the destruction from constant push, or the car simply cant handle it?

[nuclearcarnie]

Finally...a straight and detailed answer. Thanks so much for the info.



I do have experience with turbocharged engines, I had a Suzuki GSXR1100 with a Mr. Turbo system on the stock engine (way different than the VQ35 obviously). It could handle as much as 28PSI and put down 265 Whp. I ran that engine very hard (young and dumb) for about 20,000 miles and countless 1/4 mile runs before selling it in perfect running condition. Sure wish they built car engines with that kind of resiliance. 0 - 160 MPH in 9.8 seconds (stock wheel base, height and street tires...poor drag racing skills also) and still fighting the front end from floating...sure miss that bike, with age comes a sense of mortality.

Thanks again for the info.
Modified by nuclearcarnie at 9:44 AM 8/6/2007

[Gimli G35]

considering our engines are extremely High compression pistons already .. you dont want to risk it .. if you want to go 8-10 PSI , get new LOW COMPRESSION pistons

My turbo G has been running for 8 months on 14 PSI .. but ... its fully built

[nuclearcarnie]

What kind of numbers with that set up and 14PSI? That is what I plan to do, stroke + Turbo + some suspension mods. The car will be paid for next summer/fall, that is my first priority right after the turbo mod.

Quarter Mile et?whp and torque?

I will bet it is a beast! My ultimate goal is to squash anything less than a new Z06 in a straight line up to 150. I love the vette and have owned 2 of them but like the idea that I am one of the only G35 coupes in an area infested with Chevys and Fords. Most people don't even know what I am driving, kinda funny considering when I go to California to work everyone has one. I would probably want a Corvette if I lived there all the time, I like be a little different I guess.

[Gimli G35]

550-600+Hp , unknown 1\4th probally a 10-11i love the sound of a vette, sounds almost as loud as my G

[Skyline_350GT]

Hey what's up? I got a question for you. I have an 05 G35 running a twin turbo APS system, I was driving it the other day and all of a sudden it over heated. Got any suggestions? When I am at a stand still it doesnt overheat as fast, when I take off and the RPM's are going up the temp needle starts to go down and as soon as I stay at a steady RPM while cruisin it starts to heat up again???? My name is Ivan by the way

[Gimli G35]

Check your oil , check the radiator ,check the OIL PUMP!! it could be that your oil was low which caused the turbos to COOK your ball bearing. I also hope you dont turn your engine right off after a drive and drive from a cold start

Just check the engine oil , radiator (if its cooling properly), the Oil pump, and the ball bearings in the turbo ,, if its low oil , then also check the bearings ! if those bearings are COOKED your turbos wont spin properly..