The turbo install on Digital1986's car really inspired me to build a little custom turbo kit for my sedan G. I also got smoked tonight by a turbocharged 199x Civic even with a stock muffler on. I don't know how that happened but that thing kept up and started to lead at around 60 mph. The thing had stock rims too, I think 13" or 14" wheels. This was a sleeper. This was the final sign for me to do something about the car's performance.
I have done similar projects before. I have rebuild engines from top to bottom, custom turbo installs on DSMs and so on. My point is, I know what I am doing when it comes to fabricating and installing. Now my knowledge about the G35 cars is somewhat limited and completely different. Therefore I need to ask some basic questions.

Can the stock ECU adjust and compensate for the extra air flow if we are talking about a very minor boost of 4 or so PSI of boost? I really don't want to spend a $1000+ on tuning devices. I just want to gain 50hp from the whole thing and enjoy the nice sound of the turbo. Honestly, I am addicted to turbos and I am in the process of selling my last turbo charged car, a 10.31 sec. Mitsubishi Eclipse. I can't imagine not having a turbocharged car and since my G35 is my daily driver I want to keep it really safe and quiet but also fun. Keep in mind that my car is automatic and I don't want to torture the tranny too much neither.
Bottom line is, I want to add a custom turbo kit, similar to this:

The goal is ~50hp gain and to keep all original electic components such as the ECU and stock injectors.
Is this something the car can handle or even for such a small increase I need to upgrade some of the components?? I am planning on installing the motordyne spacer to allow some better flow in the intake.
Any input is appreciated.

 

seems that will b a little hard to make an a turbo on a stock everything doesnt sound good.....

 

It will be pushing the limits on the stock components but keep in mind I am talking about very little boost, maybe 3 psi.

 

that might put to much on the stock block...i was talkign to a g37 guy and they have a g37 on stock internals and stock block at around 400 to 600 hp

 

So a stock G35 can't handle 320hp without any major upgrades? I find that hard to believe. Maybe the injectors will need to be upgraded but other than that I don't see how 60hp is too much for this engine..

I really need more input from someone who knows about these engines.

 

stock blocks have been documented to put out 400+ give or take but honestly don't push your luck with higher applications. 50 whp or so? That's pretty tamed but you will still require tuning to make the most use of it, reflash wont cut it i think.

 

3 psi? I don't think the stock ecu can handle that. There's no provision for boost related a/r ratios like oem turbo cars have. You could "almost" get that much via na bolt ons.

You can't see it in the picture but there's alot of equipment that you can't see that would be needed even in a low boost application.

You "might" be able to get away with a crude split second box that uses a fuel pressure riser.

 

I would recommend a utec and then go for more than 50hp

 

But then I would most likely need bigger injectors regardless... I know how it goes.
That's how my first project car started. I upgraded the turbo for a slight bump in hp but then I wanted to get more power out of the big turbo and the expenses started and came up to a total of $6k at the end. I did have a car that did 11.3 on the 1/4 mile but $6k is not worth it, not at this point of my life. I guess the Utec might be unavoidable but if I can get a decent increase without it I would rather do it without it. To get the car professionally tuned after the turbo do I still need to buy my own tuning devices or if I go to a G/Z speciliazed shop they can reflash my ECU and do it all with their own equipment?

 

There was a guy that did his own turbo on the Z forums. But he was at least a moderate to skilled welder. If you can't weld on your own or can't tune your ecu mods yourself, the costs will skyrocket.

Actually a modest nitrous system would probably be tons cheaper for the power you are looking at.

 

Never liked the STS turbo setup. Not many do. I would go for a setup similar to the powerlab and the turbonetics setup. You will need an ECU unless you can translate and reprogram the stock ecu (which Relentless has been working on with a 600 hp G35).

 

Ask to see the chart. 4-600 is a huge huge huge range lol.

 

I can definetely weld but I am somewhat clueless on the reprogramming of the ECU

 

Many just aren't that experienced with STS types. Alot of them have great results and are making great power.

Um. As far as "translating and reprogramming the stock ecu", that ain't some easy DIY project. There are way more options than what you just tried to suggest. Even an used emanage would be okay provided he can do the adjustments himself.

 

note to self - don't race civics. stock or otherwise. if you win - your car is 3 times more expensive. if you lose - you lost to a civic.