Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

Thinking about doing a custom turbo install

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Old Apr 15, 2008 | 02:54 PM
  #16  
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Originally Posted by codeflux
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.
Haha, you are right. I wasn't planning on racing him but I heard him rev and do a burn out behind me so I decided to punch it. I was expecting to see his headlights get further and further away behind me but it didn't work out that way sadly.
 
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Old Apr 15, 2008 | 03:51 PM
  #17  
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don't feel too bad I was driving my old Paxton blown Mustang with almost 400 RWHP and I almost lost to the biggest POS old CRX you ever saw.

Of course his motor was probably shot after that one run though. You don't need me to tell you there's always someone badder

wonder how you would have done against that civic if you had lower rear end gears and all the other bolt on junk ????
 
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Old Apr 15, 2008 | 11:18 PM
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Yeah, i know I can't be faster than everyone but I just want to do something about it.
 
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Old Apr 15, 2008 | 11:21 PM
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is this a serious question? People have gone too lean with bolt-ons and you want to add boost? riiiiiight.....Where the hell are you even going to find a wastegate spring for 3psi? There's so many holes in your plan it's not even funny.

Turbonetics tried this with a reflash and 380cc injectors and we all know how that started out...It's not about how much power the motor can handle, it's whether or not it's getting the right amount of fuel, it's about whether or not the spark is igniting the mixture at the right time.

Stick to the standard kits out there and call it a day.
 

Last edited by 617G; Apr 15, 2008 at 11:26 PM.
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Old Apr 16, 2008 | 05:32 PM
  #20  
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The standard kits give huge gains, gains I am not looking for. My car is a daily driver and I need to keep it that way. I thought doing something like this with very little boost would be both fun and helpful with the performance.
 
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Old Apr 16, 2008 | 05:36 PM
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Nitrous
 
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Old Apr 16, 2008 | 06:28 PM
  #22  
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For what your looking for, you better suited to go with a supercharger. If you don't want power, then stay away from Turbo.
 
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Old Apr 17, 2008 | 09:11 AM
  #23  
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Originally Posted by G35er4life
The standard kits give huge gains, gains I am not looking for. My car is a daily driver and I need to keep it that way. I thought doing something like this with very little boost would be both fun and helpful with the performance.
what is more important

low cost of the project ?

or

super low safe boost ?

it appears that you will have to spend some money for the tuning. If you bought the key parts to do a turbo like that though I don't see why you wouldn't save money by fabbing and welding all the piping yourself. Question is how much would you save at the end. I'm curious at the what you are wanting to do also but I can't even weld lol

you wouldn't be the first to make a home made turbo kit though....

 
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Old Apr 17, 2008 | 11:37 AM
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N I T R O U S
 
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Old Apr 17, 2008 | 12:26 PM
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Originally Posted by Jeff92se
Many just aren't that experienced with STS types. Alot of them have great results and are making great power.
Not saying it doesn't make any power. I just don't like the design and the setup itself appears flawed in many ways, starting with the filter placement. Also, my exhaust scrapes all the time on offramps, so I can only imagine the damage I would do to the turbo if I had this kit

Originally Posted by Jeff92se
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.
Oh, I know it's not easy. I don't think it can be done by anyone besides a super good tuner, since reprograming it is all trial and error. He will definitely need a stand alone EMS. I wouldn't go with E-manage though
 
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Old Apr 17, 2008 | 12:45 PM
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Originally Posted by Lawy'dU
Not saying it doesn't make any power. I just don't like the design and the setup itself appears flawed in many ways, starting with the filter placement. Also, my exhaust scrapes all the time on offramps, so I can only imagine the damage I would do to the turbo if I had this kit
Fair points. But at least the turbo is not the lowest part of the car. It tucks up next to the spare. There might actually be more room as there's no muffler

Oh, I know it's not easy. I don't think it can be done by anyone besides a super good tuner, since reprograming it is all trial and error. He will definitely need a stand alone EMS. I wouldn't go with E-manage though
Actually true self programming of the ecu and not using any commerically available options is beyond the typical tuner. Even most of the good ones. I'll guess that as long as the E-Manage has fuel AND timing retard, he would be fine.
 
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Old Apr 18, 2008 | 03:03 AM
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So if I have a Utec with the turbo kit is that going to be enough for tuning? Is my tranny going to be safe if the car is putting down 320 or so hp? I really don't want to fry my auto tranny.
 
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Old Apr 18, 2008 | 08:31 AM
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Wow, I don't mean to flame but I think you really need to go another route. First of all, adding FI to an engine that already puts out 280 and only wanting 50 more horses is rediculous. The amount of work that it will take far outweighs that amount of power. I'm running 9psi and I'm already used to the new power and want a built engine. If you want 50 hp, do all the bolt-ons. A turbo for 50 hp is pointless on an engine that already makes so much power, it doesn't make a big enough difference. Adding a turbo to get 50hp our of a DSM is completely different, because the 50 hp is a much larger gain in terms of hp percentage.

The stock engine is good for 400 hp as long as you treat the car rite, any engine will blow if you are dropping the clutch, redlining, and racing every light. The tranny is fine if you are 6mt, if I had an auto, I'd upgrade that around 400whp.

If you are still determined to continue, get bigger injectors and just get the turbonetics reflash, that will give you a bigger fuel map, may cause you to run rich, but thats better than leaning out and detonating. The stock injectors can handle 50 hp but they would be running like 95%, = shorter life.

Bottom line, don't do a turbo unless you want 100hp, and then don't cut corners with things like fuel and engine management. Go to my350Z and do some research, but do not EVER post a thread like this there, they will just laugh at you, figure out different ways to ask specific questions if you can't find the answers using the search. The FI section over there has great people but they have no respect for anyone that hasn't tried to learn from the search function.
 
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Old Apr 18, 2008 | 02:43 PM
  #29  
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Thank you for the detailed reply.
My engine puts out 260hp by the way, not 280.
Regardless, the whole idea of this project is not to make my car super fast. It will be a fun project to do and the small gains will be better than nothing. I guess I am not doing it simply for the gains but for doing a project of this nature.
I have always been into turbo charged cars and have done a lot custom installs myselfs. Now that all my project cars are gone I am itching to do some custom work and my daily driver g35 is the only car I have around at this point. That's why I want to keep it as safe as possible and as stock as possible. I don't want to keep a laptop in my car anymore or having wires coming out of everywhere. I am over that stage of my life and have seen my share of fab. work and gauges all around the car. I just wanted to see what everyone thinks about it, that's all.



Originally Posted by CHudson Coupe
Wow, I don't mean to flame but I think you really need to go another route. First of all, adding FI to an engine that already puts out 280 and only wanting 50 more horses is rediculous. The amount of work that it will take far outweighs that amount of power. I'm running 9psi and I'm already used to the new power and want a built engine. If you want 50 hp, do all the bolt-ons. A turbo for 50 hp is pointless on an engine that already makes so much power, it doesn't make a big enough difference. Adding a turbo to get 50hp our of a DSM is completely different, because the 50 hp is a much larger gain in terms of hp percentage.

The stock engine is good for 400 hp as long as you treat the car rite, any engine will blow if you are dropping the clutch, redlining, and racing every light. The tranny is fine if you are 6mt, if I had an auto, I'd upgrade that around 400whp.

If you are still determined to continue, get bigger injectors and just get the turbonetics reflash, that will give you a bigger fuel map, may cause you to run rich, but thats better than leaning out and detonating. The stock injectors can handle 50 hp but they would be running like 95%, = shorter life.

Bottom line, don't do a turbo unless you want 100hp, and then don't cut corners with things like fuel and engine management. Go to my350Z and do some research, but do not EVER post a thread like this there, they will just laugh at you, figure out different ways to ask specific questions if you can't find the answers using the search. The FI section over there has great people but they have no respect for anyone that hasn't tried to learn from the search function.
 

Last edited by G35er4life; Apr 18, 2008 at 02:46 PM.
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Old Apr 18, 2008 | 02:45 PM
  #30  
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